/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_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:13:23,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:13:23,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:13:23,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:13:23,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:13:23,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:13:23,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:13:24,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:13:24,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:13:24,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:13:24,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:13:24,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:13:24,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:13:24,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:13:24,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:13:24,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:13:24,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:13:24,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:13:24,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:13:24,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:13:24,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:13:24,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:13:24,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:13:24,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:13:24,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:13:24,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:13:24,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:13:24,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:13:24,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:13:24,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:13:24,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:13:24,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:13:24,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:13:24,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:13:24,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:13:24,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:13:24,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:13:24,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:13:24,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:13:24,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:13:24,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:13:24,062 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 19:13:24,098 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:13:24,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:13:24,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:13:24,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:13:24,100 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:13:24,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:13:24,101 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:13:24,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:13:24,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:13:24,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:13:24,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:13:24,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:13:24,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:13:24,103 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:13:24,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:13:24,103 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:13:24,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:13:24,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:13:24,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:13:24,104 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:13:24,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:13:24,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:13:24,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:13:24,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:13:24,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:13:24,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:13:24,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:13:24,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:13:24,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:13:24,106 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 19:13:24,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:13:24,414 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:13:24,421 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:13:24,423 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:13:24,424 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:13:24,424 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:13:24,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23738aa8c/e9e83f3dfd1d4cbc8970ac14e681b233/FLAGee33c2d5e [2020-10-12 19:13:25,016 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:13:25,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:13:25,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23738aa8c/e9e83f3dfd1d4cbc8970ac14e681b233/FLAGee33c2d5e [2020-10-12 19:13:25,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23738aa8c/e9e83f3dfd1d4cbc8970ac14e681b233 [2020-10-12 19:13:25,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:13:25,319 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:13:25,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:13:25,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:13:25,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:13:25,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:13:25" (1/1) ... [2020-10-12 19:13:25,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40826058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:25, skipping insertion in model container [2020-10-12 19:13:25,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:13:25" (1/1) ... [2020-10-12 19:13:25,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:13:25,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:13:25,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:13:25,903 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:13:26,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:13:26,087 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:13:26,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:26 WrapperNode [2020-10-12 19:13:26,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:13:26,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:13:26,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:13:26,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:13:26,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:26" (1/1) ... [2020-10-12 19:13:26,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:26" (1/1) ... [2020-10-12 19:13:26,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:26" (1/1) ... [2020-10-12 19:13:26,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:26" (1/1) ... [2020-10-12 19:13:26,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:26" (1/1) ... [2020-10-12 19:13:26,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:26" (1/1) ... [2020-10-12 19:13:26,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:26" (1/1) ... [2020-10-12 19:13:26,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:13:26,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:13:26,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:13:26,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:13:26,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:26" (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 19:13:26,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:13:26,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:13:26,259 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:13:26,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:13:26,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:13:26,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:13:26,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:13:26,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:13:26,262 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:13:26,262 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:13:26,262 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:13:26,262 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:13:26,263 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:13:26,263 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:13:26,263 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:13:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:13:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:13:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:13:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:13:26,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:13:26,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:13:27,563 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:13:27,563 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:13:27,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:13:27 BoogieIcfgContainer [2020-10-12 19:13:27,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:13:27,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:13:27,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:13:27,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:13:27,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:13:25" (1/3) ... [2020-10-12 19:13:27,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b761e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:13:27, skipping insertion in model container [2020-10-12 19:13:27,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:26" (2/3) ... [2020-10-12 19:13:27,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b761e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:13:27, skipping insertion in model container [2020-10-12 19:13:27,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:13:27" (3/3) ... [2020-10-12 19:13:27,578 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:13:27,588 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:13:27,596 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:13:27,610 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:13:27,636 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:13:27,636 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:13:27,636 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:13:27,636 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:13:27,637 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:13:27,637 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:13:27,637 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:13:27,637 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:13:27,664 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2020-10-12 19:13:27,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-12 19:13:27,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:13:27,680 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] [2020-10-12 19:13:27,680 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:13:27,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:13:27,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1720759153, now seen corresponding path program 1 times [2020-10-12 19:13:27,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:13:27,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128712079] [2020-10-12 19:13:27,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:13:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:28,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:28,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:28,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:28,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:29,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:29,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:29,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:29,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:29,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:30,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:31,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:31,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:32,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:33,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:33,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 19:13:33,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:13:33,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:13:33,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:33,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:13:33,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:13:33,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 19:13:33,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:13:33,634 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:13:33,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:13:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:33,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:33,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:33,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:13:33,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:13:33,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:13:33,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:33,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:13:33,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:13:33,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:13:33,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:33,715 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 19:13:33,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128712079] [2020-10-12 19:13:33,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:13:33,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:13:33,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239724548] [2020-10-12 19:13:33,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:13:33,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:13:33,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:13:33,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:13:33,742 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 5 states. [2020-10-12 19:13:36,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:13:36,240 INFO L93 Difference]: Finished difference Result 860 states and 1528 transitions. [2020-10-12 19:13:36,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:13:36,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-12 19:13:36,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:13:36,261 INFO L225 Difference]: With dead ends: 860 [2020-10-12 19:13:36,261 INFO L226 Difference]: Without dead ends: 569 [2020-10-12 19:13:36,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:13:36,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2020-10-12 19:13:36,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 567. [2020-10-12 19:13:36,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-10-12 19:13:36,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 815 transitions. [2020-10-12 19:13:36,384 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 815 transitions. Word has length 147 [2020-10-12 19:13:36,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:13:36,385 INFO L479 AbstractCegarLoop]: Abstraction has 567 states and 815 transitions. [2020-10-12 19:13:36,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:13:36,385 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 815 transitions. [2020-10-12 19:13:36,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-12 19:13:36,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:13:36,390 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] [2020-10-12 19:13:36,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:13:36,391 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:13:36,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:13:36,391 INFO L82 PathProgramCache]: Analyzing trace with hash -601496751, now seen corresponding path program 1 times [2020-10-12 19:13:36,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:13:36,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628301329] [2020-10-12 19:13:36,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:13:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:36,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:36,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:36,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:36,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:36,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:36,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:36,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:36,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:37,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:37,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:37,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:37,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:41,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:41,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:41,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 19:13:41,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:13:41,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 19:13:41,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:13:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:13:41,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 19:13:41,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:13:41,714 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:13:41,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:13:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:41,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:41,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:41,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:13:41,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:13:41,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:13:41,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:41,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:13:41,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:13:41,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:13:41,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:41,777 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 19:13:41,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628301329] [2020-10-12 19:13:41,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:13:41,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:13:41,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689757476] [2020-10-12 19:13:41,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:13:41,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:13:41,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:13:41,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:13:41,781 INFO L87 Difference]: Start difference. First operand 567 states and 815 transitions. Second operand 5 states. [2020-10-12 19:13:43,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:13:43,761 INFO L93 Difference]: Finished difference Result 1622 states and 2320 transitions. [2020-10-12 19:13:43,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:13:43,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-12 19:13:43,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:13:43,769 INFO L225 Difference]: With dead ends: 1622 [2020-10-12 19:13:43,769 INFO L226 Difference]: Without dead ends: 1082 [2020-10-12 19:13:43,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:13:43,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2020-10-12 19:13:43,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1080. [2020-10-12 19:13:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1080 states. [2020-10-12 19:13:43,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1532 transitions. [2020-10-12 19:13:43,829 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1532 transitions. Word has length 148 [2020-10-12 19:13:43,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:13:43,830 INFO L479 AbstractCegarLoop]: Abstraction has 1080 states and 1532 transitions. [2020-10-12 19:13:43,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:13:43,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1532 transitions. [2020-10-12 19:13:43,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-12 19:13:43,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:13:43,834 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] [2020-10-12 19:13:43,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:13:43,835 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:13:43,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:13:43,835 INFO L82 PathProgramCache]: Analyzing trace with hash 709657357, now seen corresponding path program 1 times [2020-10-12 19:13:43,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:13:43,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631533719] [2020-10-12 19:13:43,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:13:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:43,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:43,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:43,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:44,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:44,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:44,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:44,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:44,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:44,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:44,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:46,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:47,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:47,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:48,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:48,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 19:13:48,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:13:48,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 19:13:48,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:48,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:13:48,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:13:48,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 19:13:48,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:13:49,343 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:13:49,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:13:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:49,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:49,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:49,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:13:49,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:13:49,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:13:49,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:13:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:13:49,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:13:49,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:13:49,469 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 19:13:49,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631533719] [2020-10-12 19:13:49,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:13:49,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:13:49,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641580579] [2020-10-12 19:13:49,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:13:49,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:13:49,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:13:49,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:13:49,478 INFO L87 Difference]: Start difference. First operand 1080 states and 1532 transitions. Second operand 5 states. [2020-10-12 19:13:52,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:13:52,164 INFO L93 Difference]: Finished difference Result 3119 states and 4408 transitions. [2020-10-12 19:13:52,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:13:52,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-12 19:13:52,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:13:52,182 INFO L225 Difference]: With dead ends: 3119 [2020-10-12 19:13:52,183 INFO L226 Difference]: Without dead ends: 2083 [2020-10-12 19:13:52,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:13:52,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2020-10-12 19:13:52,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 2081. [2020-10-12 19:13:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2081 states. [2020-10-12 19:13:52,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2081 states to 2081 states and 2912 transitions. [2020-10-12 19:13:52,351 INFO L78 Accepts]: Start accepts. Automaton has 2081 states and 2912 transitions. Word has length 149 [2020-10-12 19:13:52,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:13:52,354 INFO L479 AbstractCegarLoop]: Abstraction has 2081 states and 2912 transitions. [2020-10-12 19:13:52,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:13:52,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2081 states and 2912 transitions. [2020-10-12 19:13:52,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-12 19:13:52,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:13:52,367 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] [2020-10-12 19:13:52,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:13:52,367 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:13:52,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:13:52,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1888895694, now seen corresponding path program 1 times [2020-10-12 19:13:52,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:13:52,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124903939] [2020-10-12 19:13:52,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:13:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:52,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:52,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:52,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:52,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:52,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:52,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:52,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:53,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:54,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:57,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:57,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-12 19:13:57,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:13:57,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:13:57,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:13:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:13:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 19:13:57,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 19:13:57,749 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:13:57,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:13:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:57,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:57,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:57,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:13:57,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:13:57,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:13:57,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:57,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:13:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:13:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:13:57,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:57,817 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 19:13:57,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124903939] [2020-10-12 19:13:57,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:13:57,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:13:57,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939243299] [2020-10-12 19:13:57,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:13:57,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:13:57,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:13:57,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:13:57,819 INFO L87 Difference]: Start difference. First operand 2081 states and 2912 transitions. Second operand 5 states. [2020-10-12 19:14:00,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:00,342 INFO L93 Difference]: Finished difference Result 5880 states and 8238 transitions. [2020-10-12 19:14:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:14:00,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-12 19:14:00,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:00,364 INFO L225 Difference]: With dead ends: 5880 [2020-10-12 19:14:00,364 INFO L226 Difference]: Without dead ends: 4032 [2020-10-12 19:14:00,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:14:00,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4032 states. [2020-10-12 19:14:00,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4032 to 4030. [2020-10-12 19:14:00,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4030 states. [2020-10-12 19:14:00,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4030 states to 4030 states and 5575 transitions. [2020-10-12 19:14:00,647 INFO L78 Accepts]: Start accepts. Automaton has 4030 states and 5575 transitions. Word has length 150 [2020-10-12 19:14:00,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:00,648 INFO L479 AbstractCegarLoop]: Abstraction has 4030 states and 5575 transitions. [2020-10-12 19:14:00,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:14:00,648 INFO L276 IsEmpty]: Start isEmpty. Operand 4030 states and 5575 transitions. [2020-10-12 19:14:00,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-12 19:14:00,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:00,656 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] [2020-10-12 19:14:00,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:14:00,657 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:00,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:00,657 INFO L82 PathProgramCache]: Analyzing trace with hash -961475667, now seen corresponding path program 1 times [2020-10-12 19:14:00,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:00,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113863646] [2020-10-12 19:14:00,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:00,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:00,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:00,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:00,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:00,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:00,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:04,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:04,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:04,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:05,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:05,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-12 19:14:05,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:14:05,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 19:14:05,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:05,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:14:05,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:14:05,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 19:14:05,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:06,021 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:14:06,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:06,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:06,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:06,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:06,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:06,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:14:06,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:06,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:06,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:06,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:06,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:06,107 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 19:14:06,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113863646] [2020-10-12 19:14:06,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:06,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:14:06,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053032148] [2020-10-12 19:14:06,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:14:06,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:06,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:14:06,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:14:06,113 INFO L87 Difference]: Start difference. First operand 4030 states and 5575 transitions. Second operand 5 states. [2020-10-12 19:14:09,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:09,172 INFO L93 Difference]: Finished difference Result 10862 states and 15121 transitions. [2020-10-12 19:14:09,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:14:09,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-12 19:14:09,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:09,207 INFO L225 Difference]: With dead ends: 10862 [2020-10-12 19:14:09,207 INFO L226 Difference]: Without dead ends: 7772 [2020-10-12 19:14:09,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:14:09,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7772 states. [2020-10-12 19:14:09,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7772 to 7770. [2020-10-12 19:14:09,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7770 states. [2020-10-12 19:14:09,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7770 states to 7770 states and 10599 transitions. [2020-10-12 19:14:09,663 INFO L78 Accepts]: Start accepts. Automaton has 7770 states and 10599 transitions. Word has length 151 [2020-10-12 19:14:09,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:09,664 INFO L479 AbstractCegarLoop]: Abstraction has 7770 states and 10599 transitions. [2020-10-12 19:14:09,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:14:09,664 INFO L276 IsEmpty]: Start isEmpty. Operand 7770 states and 10599 transitions. [2020-10-12 19:14:09,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 19:14:09,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:09,678 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] [2020-10-12 19:14:09,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:14:09,678 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:09,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:09,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1952314318, now seen corresponding path program 1 times [2020-10-12 19:14:09,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:09,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602801848] [2020-10-12 19:14:09,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:09,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:09,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:09,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:09,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:09,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:09,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:09,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:14,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:14,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-12 19:14:14,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:14:14,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:14:14,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:14,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:14:14,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 19:14:14,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 19:14:14,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:14,946 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:14:14,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:14,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:14,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:14,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:14,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:14,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:14:14,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:14,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:14,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:14,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:14,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:14:15,015 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 19:14:15,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602801848] [2020-10-12 19:14:15,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:15,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:14:15,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31902526] [2020-10-12 19:14:15,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:14:15,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:15,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:14:15,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:14:15,021 INFO L87 Difference]: Start difference. First operand 7770 states and 10599 transitions. Second operand 5 states. [2020-10-12 19:14:16,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:16,442 INFO L93 Difference]: Finished difference Result 12456 states and 17015 transitions. [2020-10-12 19:14:16,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:14:16,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-12 19:14:16,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:16,462 INFO L225 Difference]: With dead ends: 12456 [2020-10-12 19:14:16,463 INFO L226 Difference]: Without dead ends: 5040 [2020-10-12 19:14:16,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:14:16,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5040 states. [2020-10-12 19:14:16,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5040 to 5028. [2020-10-12 19:14:16,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5028 states. [2020-10-12 19:14:16,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5028 states to 5028 states and 6832 transitions. [2020-10-12 19:14:16,729 INFO L78 Accepts]: Start accepts. Automaton has 5028 states and 6832 transitions. Word has length 152 [2020-10-12 19:14:16,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:16,729 INFO L479 AbstractCegarLoop]: Abstraction has 5028 states and 6832 transitions. [2020-10-12 19:14:16,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:14:16,729 INFO L276 IsEmpty]: Start isEmpty. Operand 5028 states and 6832 transitions. [2020-10-12 19:14:16,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-12 19:14:16,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:16,739 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] [2020-10-12 19:14:16,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:14:16,739 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:16,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:16,739 INFO L82 PathProgramCache]: Analyzing trace with hash -150494148, now seen corresponding path program 1 times [2020-10-12 19:14:16,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:16,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055949004] [2020-10-12 19:14:16,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:16,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:16,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:16,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:16,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:16,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:17,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:17,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:17,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:17,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:17,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:21,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:21,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 19:14:21,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:14:21,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:14:21,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:21,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:14:21,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:14:21,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 19:14:21,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:22,115 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:14:22,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:22,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:22,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:22,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:22,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:22,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:14:22,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:14:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:14:22,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:22,222 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 19:14:22,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055949004] [2020-10-12 19:14:22,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:22,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:14:22,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499429425] [2020-10-12 19:14:22,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:14:22,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:22,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:14:22,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:14:22,226 INFO L87 Difference]: Start difference. First operand 5028 states and 6832 transitions. Second operand 11 states. [2020-10-12 19:14:22,645 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 174 [2020-10-12 19:14:25,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:25,694 INFO L93 Difference]: Finished difference Result 18947 states and 27078 transitions. [2020-10-12 19:14:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:14:25,694 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 159 [2020-10-12 19:14:25,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:25,742 INFO L225 Difference]: With dead ends: 18947 [2020-10-12 19:14:25,742 INFO L226 Difference]: Without dead ends: 15294 [2020-10-12 19:14:25,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-10-12 19:14:25,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15294 states. [2020-10-12 19:14:26,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15294 to 11202. [2020-10-12 19:14:26,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11202 states. [2020-10-12 19:14:26,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11202 states to 11202 states and 15662 transitions. [2020-10-12 19:14:26,516 INFO L78 Accepts]: Start accepts. Automaton has 11202 states and 15662 transitions. Word has length 159 [2020-10-12 19:14:26,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:26,516 INFO L479 AbstractCegarLoop]: Abstraction has 11202 states and 15662 transitions. [2020-10-12 19:14:26,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:14:26,516 INFO L276 IsEmpty]: Start isEmpty. Operand 11202 states and 15662 transitions. [2020-10-12 19:14:26,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-12 19:14:26,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:26,530 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] [2020-10-12 19:14:26,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:14:26,531 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:26,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:26,531 INFO L82 PathProgramCache]: Analyzing trace with hash 617888695, now seen corresponding path program 1 times [2020-10-12 19:14:26,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:26,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264460169] [2020-10-12 19:14:26,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:26,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:26,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:26,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:26,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:26,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:26,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:26,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:26,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:28,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:31,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:31,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 19:14:31,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:14:31,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:14:31,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:31,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:14:31,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:14:31,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 19:14:31,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:31,777 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:14:31,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:31,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:31,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:31,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:31,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:31,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:14:31,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:31,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:31,826 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 19:14:31,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264460169] [2020-10-12 19:14:31,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:31,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:14:31,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415318878] [2020-10-12 19:14:31,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:14:31,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:31,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:14:31,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:14:31,829 INFO L87 Difference]: Start difference. First operand 11202 states and 15662 transitions. Second operand 5 states. [2020-10-12 19:14:33,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:33,492 INFO L93 Difference]: Finished difference Result 22361 states and 31256 transitions. [2020-10-12 19:14:33,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:14:33,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-12 19:14:33,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:33,516 INFO L225 Difference]: With dead ends: 22361 [2020-10-12 19:14:33,516 INFO L226 Difference]: Without dead ends: 11195 [2020-10-12 19:14:33,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:14:33,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11195 states. [2020-10-12 19:14:34,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11195 to 11195. [2020-10-12 19:14:34,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11195 states. [2020-10-12 19:14:34,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11195 states to 11195 states and 15645 transitions. [2020-10-12 19:14:34,168 INFO L78 Accepts]: Start accepts. Automaton has 11195 states and 15645 transitions. Word has length 159 [2020-10-12 19:14:34,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:34,168 INFO L479 AbstractCegarLoop]: Abstraction has 11195 states and 15645 transitions. [2020-10-12 19:14:34,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:14:34,168 INFO L276 IsEmpty]: Start isEmpty. Operand 11195 states and 15645 transitions. [2020-10-12 19:14:34,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-12 19:14:34,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:34,181 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] [2020-10-12 19:14:34,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:14:34,181 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:34,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:34,181 INFO L82 PathProgramCache]: Analyzing trace with hash -609991995, now seen corresponding path program 1 times [2020-10-12 19:14:34,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:34,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617775191] [2020-10-12 19:14:34,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:34,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:34,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:34,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:34,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:34,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:34,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:34,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:34,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:34,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:35,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:35,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:36,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:38,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:39,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:39,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 19:14:39,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:14:39,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:14:39,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:39,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:14:39,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:14:39,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 19:14:39,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:39,425 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:14:39,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:39,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:39,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:39,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:39,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:39,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:14:39,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:39,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:39,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:39,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:39,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:39,456 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 19:14:39,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617775191] [2020-10-12 19:14:39,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:39,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:14:39,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774349851] [2020-10-12 19:14:39,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:14:39,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:39,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:14:39,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:14:39,458 INFO L87 Difference]: Start difference. First operand 11195 states and 15645 transitions. Second operand 5 states. [2020-10-12 19:14:40,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:40,983 INFO L93 Difference]: Finished difference Result 20082 states and 28049 transitions. [2020-10-12 19:14:40,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:14:40,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-12 19:14:40,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:41,001 INFO L225 Difference]: With dead ends: 20082 [2020-10-12 19:14:41,001 INFO L226 Difference]: Without dead ends: 9090 [2020-10-12 19:14:41,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:14:41,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9090 states. [2020-10-12 19:14:41,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9090 to 9088. [2020-10-12 19:14:41,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9088 states. [2020-10-12 19:14:41,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9088 states to 9088 states and 12642 transitions. [2020-10-12 19:14:41,774 INFO L78 Accepts]: Start accepts. Automaton has 9088 states and 12642 transitions. Word has length 160 [2020-10-12 19:14:41,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:41,775 INFO L479 AbstractCegarLoop]: Abstraction has 9088 states and 12642 transitions. [2020-10-12 19:14:41,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:14:41,775 INFO L276 IsEmpty]: Start isEmpty. Operand 9088 states and 12642 transitions. [2020-10-12 19:14:41,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 19:14:41,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:41,784 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] [2020-10-12 19:14:41,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:14:41,784 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:41,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:41,785 INFO L82 PathProgramCache]: Analyzing trace with hash 487355758, now seen corresponding path program 1 times [2020-10-12 19:14:41,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:41,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344764239] [2020-10-12 19:14:41,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:41,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:41,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:41,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:41,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:42,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:43,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:43,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:43,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:43,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:46,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:46,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 19:14:46,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:14:46,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:14:46,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:14:46,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-12 19:14:46,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 19:14:46,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:47,288 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:14:47,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:47,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:47,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:47,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:47,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:47,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:14:47,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:47,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:47,376 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 19:14:47,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344764239] [2020-10-12 19:14:47,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:47,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:14:47,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939117958] [2020-10-12 19:14:47,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:14:47,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:47,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:14:47,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:14:47,378 INFO L87 Difference]: Start difference. First operand 9088 states and 12642 transitions. Second operand 12 states. [2020-10-12 19:14:47,507 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-12 19:14:48,176 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 216 [2020-10-12 19:14:51,609 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (* c_~max2~0 (- 1)))) (or (and (<= 0 (+ c_~max2~0 (* 256 (div (+ c_~max1~0 .cse0 256) 256)))) (<= (+ (* 256 (div (+ .cse0 383) 256)) c_~max2~0) 255)) (<= 0 (+ (* 256 (div (+ c_~max1~0 .cse0) 256)) c_~max2~0)))) (let ((.cse1 (* 256 (div c_main_~node2____CPAchecker_TMP_0~1 256)))) (or (and (<= c_main_~node2____CPAchecker_TMP_0~1 (+ .cse1 c_~max1~0 256)) (<= (+ .cse1 128) c_main_~node2____CPAchecker_TMP_0~1)) (<= c_main_~node2____CPAchecker_TMP_0~1 (+ .cse1 c_~max1~0)))) (<= c_~m1~0 c_~max1~0) (= c_~max2~0 c_main_~node2____CPAchecker_TMP_0~0)) is different from false [2020-10-12 19:15:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:15:08,006 INFO L93 Difference]: Finished difference Result 20163 states and 29103 transitions. [2020-10-12 19:15:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:15:08,007 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 164 [2020-10-12 19:15:08,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:15:08,032 INFO L225 Difference]: With dead ends: 20163 [2020-10-12 19:15:08,033 INFO L226 Difference]: Without dead ends: 16653 [2020-10-12 19:15:08,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=111, Invalid=398, Unknown=1, NotChecked=42, Total=552 [2020-10-12 19:15:08,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16653 states. [2020-10-12 19:15:08,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16653 to 10200. [2020-10-12 19:15:08,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10200 states. [2020-10-12 19:15:08,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10200 states to 10200 states and 13922 transitions. [2020-10-12 19:15:08,732 INFO L78 Accepts]: Start accepts. Automaton has 10200 states and 13922 transitions. Word has length 164 [2020-10-12 19:15:08,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:15:08,733 INFO L479 AbstractCegarLoop]: Abstraction has 10200 states and 13922 transitions. [2020-10-12 19:15:08,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:15:08,733 INFO L276 IsEmpty]: Start isEmpty. Operand 10200 states and 13922 transitions. [2020-10-12 19:15:08,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 19:15:08,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:15:08,740 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] [2020-10-12 19:15:08,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:15:08,740 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:15:08,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:15:08,740 INFO L82 PathProgramCache]: Analyzing trace with hash 30852207, now seen corresponding path program 1 times [2020-10-12 19:15:08,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:15:08,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274132666] [2020-10-12 19:15:08,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:15:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:08,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:08,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:08,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:08,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:09,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:10,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:11,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:12,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:12,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:12,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:12,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:13,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:13,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:13,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:13,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 19:15:13,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:15:13,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:15:13,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:13,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 19:15:13,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:15:13,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-12 19:15:13,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:14,417 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:15:14,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:15:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:14,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:14,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:14,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:15:14,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:15:14,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:15:14,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:15:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:15:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:15:14,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:14,508 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 19:15:14,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274132666] [2020-10-12 19:15:14,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:15:14,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-12 19:15:14,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445591934] [2020-10-12 19:15:14,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 19:15:14,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:15:14,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 19:15:14,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:15:14,510 INFO L87 Difference]: Start difference. First operand 10200 states and 13922 transitions. Second operand 19 states. [2020-10-12 19:15:15,105 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 193 [2020-10-12 19:15:16,221 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-12 19:15:30,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:15:30,204 INFO L93 Difference]: Finished difference Result 54853 states and 79162 transitions. [2020-10-12 19:15:30,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-10-12 19:15:30,205 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 164 [2020-10-12 19:15:30,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:15:30,272 INFO L225 Difference]: With dead ends: 54853 [2020-10-12 19:15:30,272 INFO L226 Difference]: Without dead ends: 47151 [2020-10-12 19:15:30,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2657 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1340, Invalid=7216, Unknown=0, NotChecked=0, Total=8556 [2020-10-12 19:15:30,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47151 states. [2020-10-12 19:15:31,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47151 to 17222. [2020-10-12 19:15:31,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17222 states. [2020-10-12 19:15:31,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17222 states to 17222 states and 24274 transitions. [2020-10-12 19:15:31,830 INFO L78 Accepts]: Start accepts. Automaton has 17222 states and 24274 transitions. Word has length 164 [2020-10-12 19:15:31,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:15:31,830 INFO L479 AbstractCegarLoop]: Abstraction has 17222 states and 24274 transitions. [2020-10-12 19:15:31,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 19:15:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 17222 states and 24274 transitions. [2020-10-12 19:15:31,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 19:15:31,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:15:31,840 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] [2020-10-12 19:15:31,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:15:31,840 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:15:31,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:15:31,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1232877472, now seen corresponding path program 1 times [2020-10-12 19:15:31,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:15:31,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614661864] [2020-10-12 19:15:31,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:15:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:31,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:31,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:31,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:31,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:32,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:33,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:34,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:34,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:34,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:34,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:34,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:36,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:36,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 19:15:36,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:15:36,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 19:15:36,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:15:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 19:15:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 19:15:36,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:37,111 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:15:37,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:15:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:37,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:37,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:37,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:15:37,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:15:37,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:15:37,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:37,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:15:37,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:15:37,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:15:37,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:37,148 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 19:15:37,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614661864] [2020-10-12 19:15:37,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:15:37,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:15:37,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839840599] [2020-10-12 19:15:37,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:15:37,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:15:37,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:15:37,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:15:37,150 INFO L87 Difference]: Start difference. First operand 17222 states and 24274 transitions. Second operand 6 states. [2020-10-12 19:15:37,378 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-12 19:15:42,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:15:42,165 INFO L93 Difference]: Finished difference Result 45070 states and 67337 transitions. [2020-10-12 19:15:42,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:15:42,166 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2020-10-12 19:15:42,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:15:42,209 INFO L225 Difference]: With dead ends: 45070 [2020-10-12 19:15:42,210 INFO L226 Difference]: Without dead ends: 36092 [2020-10-12 19:15:42,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:15:42,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36092 states. [2020-10-12 19:15:46,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36092 to 36088. [2020-10-12 19:15:46,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36088 states. [2020-10-12 19:15:46,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36088 states to 36088 states and 52960 transitions. [2020-10-12 19:15:46,917 INFO L78 Accepts]: Start accepts. Automaton has 36088 states and 52960 transitions. Word has length 164 [2020-10-12 19:15:46,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:15:46,918 INFO L479 AbstractCegarLoop]: Abstraction has 36088 states and 52960 transitions. [2020-10-12 19:15:46,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:15:46,918 INFO L276 IsEmpty]: Start isEmpty. Operand 36088 states and 52960 transitions. [2020-10-12 19:15:46,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 19:15:46,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:15:46,929 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] [2020-10-12 19:15:46,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:15:46,929 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:15:46,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:15:46,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1866378874, now seen corresponding path program 1 times [2020-10-12 19:15:46,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:15:46,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852187968] [2020-10-12 19:15:46,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:15:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:46,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:47,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:47,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:47,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:47,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:48,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:51,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:51,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 19:15:51,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:15:51,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4634 [2020-10-12 19:15:51,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:51,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:15:51,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-12 19:15:51,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 19:15:51,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:51,818 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:15:51,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:15:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:51,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:51,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:51,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:15:51,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:15:51,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:15:51,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:51,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:15:51,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:15:51,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:15:51,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:51,851 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 19:15:51,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852187968] [2020-10-12 19:15:51,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:15:51,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:15:51,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669396143] [2020-10-12 19:15:51,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:15:51,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:15:51,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:15:51,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:15:51,853 INFO L87 Difference]: Start difference. First operand 36088 states and 52960 transitions. Second operand 5 states. [2020-10-12 19:15:55,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:15:55,698 INFO L93 Difference]: Finished difference Result 63916 states and 93804 transitions. [2020-10-12 19:15:55,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:15:55,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-12 19:15:55,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:15:55,730 INFO L225 Difference]: With dead ends: 63916 [2020-10-12 19:15:55,730 INFO L226 Difference]: Without dead ends: 28624 [2020-10-12 19:15:55,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:15:55,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28624 states. [2020-10-12 19:15:58,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28624 to 28621. [2020-10-12 19:15:58,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28621 states. [2020-10-12 19:15:58,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28621 states to 28621 states and 41768 transitions. [2020-10-12 19:15:58,563 INFO L78 Accepts]: Start accepts. Automaton has 28621 states and 41768 transitions. Word has length 164 [2020-10-12 19:15:58,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:15:58,563 INFO L479 AbstractCegarLoop]: Abstraction has 28621 states and 41768 transitions. [2020-10-12 19:15:58,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:15:58,563 INFO L276 IsEmpty]: Start isEmpty. Operand 28621 states and 41768 transitions. [2020-10-12 19:15:58,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-12 19:15:58,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:15:58,573 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] [2020-10-12 19:15:58,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:15:58,574 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:15:58,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:15:58,574 INFO L82 PathProgramCache]: Analyzing trace with hash -659995950, now seen corresponding path program 1 times [2020-10-12 19:15:58,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:15:58,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185176471] [2020-10-12 19:15:58,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:15:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:58,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:58,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:58,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:58,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:58,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:58,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:59,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:59,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:59,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:59,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:59,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:59,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:00,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:00,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:03,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:03,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-12 19:16:03,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:16:03,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 19:16:03,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:16:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-12 19:16:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 19:16:03,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:16:04,327 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:16:04,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:16:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:16:04,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:04,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:04,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:16:04,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:16:04,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:16:04,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:04,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:16:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:16:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:16:04,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:16:04,384 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 19:16:04,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185176471] [2020-10-12 19:16:04,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:16:04,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:16:04,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940045555] [2020-10-12 19:16:04,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:16:04,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:16:04,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:16:04,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:16:04,386 INFO L87 Difference]: Start difference. First operand 28621 states and 41768 transitions. Second operand 12 states. [2020-10-12 19:16:04,933 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-12 19:16:16,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:16:16,177 INFO L93 Difference]: Finished difference Result 76388 states and 113359 transitions. [2020-10-12 19:16:16,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 19:16:16,178 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 169 [2020-10-12 19:16:16,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:16:16,248 INFO L225 Difference]: With dead ends: 76388 [2020-10-12 19:16:16,248 INFO L226 Difference]: Without dead ends: 62641 [2020-10-12 19:16:16,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2020-10-12 19:16:16,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62641 states. [2020-10-12 19:16:20,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62641 to 31299. [2020-10-12 19:16:20,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31299 states. [2020-10-12 19:16:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31299 states to 31299 states and 44961 transitions. [2020-10-12 19:16:20,807 INFO L78 Accepts]: Start accepts. Automaton has 31299 states and 44961 transitions. Word has length 169 [2020-10-12 19:16:20,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:16:20,807 INFO L479 AbstractCegarLoop]: Abstraction has 31299 states and 44961 transitions. [2020-10-12 19:16:20,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:16:20,807 INFO L276 IsEmpty]: Start isEmpty. Operand 31299 states and 44961 transitions. [2020-10-12 19:16:20,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-12 19:16:20,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:16:20,816 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] [2020-10-12 19:16:20,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:16:20,817 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:16:20,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:16:20,817 INFO L82 PathProgramCache]: Analyzing trace with hash 418340982, now seen corresponding path program 1 times [2020-10-12 19:16:20,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:16:20,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811141572] [2020-10-12 19:16:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:16:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:16:20,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:20,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:20,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:20,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:21,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:21,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:21,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:21,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:21,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:21,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:22,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:22,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:23,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:25,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:25,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-12 19:16:25,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:16:25,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4545 [2020-10-12 19:16:25,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:25,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:16:25,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:16:25,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-12 19:16:25,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:16:25,809 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:16:25,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:16:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:16:25,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:25,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:25,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:16:25,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:16:25,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:16:25,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:25,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:16:25,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:16:25,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:16:25,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:16:25,869 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 19:16:25,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811141572] [2020-10-12 19:16:25,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:16:25,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:16:25,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547700419] [2020-10-12 19:16:25,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:16:25,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:16:25,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:16:25,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:16:25,871 INFO L87 Difference]: Start difference. First operand 31299 states and 44961 transitions. Second operand 11 states. [2020-10-12 19:16:26,104 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-12 19:16:56,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:16:56,356 INFO L93 Difference]: Finished difference Result 244236 states and 367397 transitions. [2020-10-12 19:16:56,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 19:16:56,356 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 169 [2020-10-12 19:16:56,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:16:56,676 INFO L225 Difference]: With dead ends: 244236 [2020-10-12 19:16:56,677 INFO L226 Difference]: Without dead ends: 223390 [2020-10-12 19:16:56,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2020-10-12 19:16:56,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223390 states.