/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:09:04,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:09:04,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:09:04,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:09:04,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:09:04,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:09:04,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:09:04,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:09:04,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:09:04,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:09:04,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:09:04,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:09:04,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:09:04,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:09:04,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:09:04,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:09:04,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:09:04,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:09:04,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:09:04,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:09:04,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:09:04,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:09:04,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:09:04,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:09:04,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:09:04,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:09:04,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:09:04,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:09:04,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:09:04,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:09:04,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:09:04,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:09:04,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:09:04,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:09:04,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:09:04,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:09:04,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:09:04,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:09:04,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:09:04,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:09:04,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:09:04,126 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 [2020-10-15 04:09:04,169 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:09:04,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:09:04,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:09:04,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:09:04,172 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:09:04,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:09:04,173 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:09:04,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:09:04,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:09:04,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:09:04,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:09:04,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:09:04,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:09:04,176 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:09:04,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:09:04,176 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:09:04,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:09:04,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:09:04,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:09:04,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:09:04,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:09:04,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:09:04,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:09:04,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:09:04,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:09:04,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:09:04,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:09:04,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:09:04,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:09:04,179 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:09:04,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:09:04,516 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:09:04,520 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:09:04,522 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:09:04,522 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:09:04,523 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:09:04,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/329b9b380/c68302a9fc9a49b9b6182caeb937348f/FLAGdaad4a26b [2020-10-15 04:09:05,093 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:09:05,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:09:05,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/329b9b380/c68302a9fc9a49b9b6182caeb937348f/FLAGdaad4a26b [2020-10-15 04:09:05,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/329b9b380/c68302a9fc9a49b9b6182caeb937348f [2020-10-15 04:09:05,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:09:05,367 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:09:05,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:09:05,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:09:05,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:09:05,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:09:05" (1/1) ... [2020-10-15 04:09:05,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d1b9a41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:05, skipping insertion in model container [2020-10-15 04:09:05,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:09:05" (1/1) ... [2020-10-15 04:09:05,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:09:05,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:09:05,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:09:05,978 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:09:06,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:09:06,160 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:09:06,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:06 WrapperNode [2020-10-15 04:09:06,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:09:06,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:09:06,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:09:06,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:09:06,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:06" (1/1) ... [2020-10-15 04:09:06,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:06" (1/1) ... [2020-10-15 04:09:06,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:06" (1/1) ... [2020-10-15 04:09:06,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:06" (1/1) ... [2020-10-15 04:09:06,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:06" (1/1) ... [2020-10-15 04:09:06,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:06" (1/1) ... [2020-10-15 04:09:06,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:06" (1/1) ... [2020-10-15 04:09:06,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:09:06,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:09:06,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:09:06,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:09:06,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:06" (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 [2020-10-15 04:09:06,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:09:06,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:09:06,382 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:09:06,382 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:09:06,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:09:06,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:09:06,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 04:09:06,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:09:06,385 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:09:06,385 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:09:06,386 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:09:06,386 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:09:06,386 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:09:06,386 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:09:06,387 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:09:06,388 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:09:06,388 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 04:09:06,388 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:09:06,388 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:09:06,388 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:09:06,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:09:06,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:09:07,742 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:09:07,743 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:09:07,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:09:07 BoogieIcfgContainer [2020-10-15 04:09:07,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:09:07,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:09:07,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:09:07,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:09:07,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:09:05" (1/3) ... [2020-10-15 04:09:07,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2019c34f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:09:07, skipping insertion in model container [2020-10-15 04:09:07,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:06" (2/3) ... [2020-10-15 04:09:07,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2019c34f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:09:07, skipping insertion in model container [2020-10-15 04:09:07,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:09:07" (3/3) ... [2020-10-15 04:09:07,758 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:09:07,768 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:09:07,775 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:09:07,789 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:09:07,815 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:09:07,815 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:09:07,815 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:09:07,815 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:09:07,815 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:09:07,815 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:09:07,815 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:09:07,816 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:09:07,842 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states. [2020-10-15 04:09:07,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-15 04:09:07,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:09:07,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:09:07,862 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:09:07,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:09:07,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1373065631, now seen corresponding path program 1 times [2020-10-15 04:09:07,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:09:07,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654521772] [2020-10-15 04:09:07,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:09:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:08,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:08,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:09,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:09,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:10,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:13,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:13,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-15 04:09:13,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:09:13,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-15 04:09:13,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:13,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:13,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:09:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-15 04:09:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:09:13,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:09:14,127 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:09:14,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:09:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:14,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:14,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:14,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:09:14,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:09:14,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 04:09:14,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:14,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:14,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:09:14,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:09:14,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:09:14,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:09:14,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:09:14,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654521772] [2020-10-15 04:09:14,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:09:14,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:09:14,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614166844] [2020-10-15 04:09:14,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:09:14,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:09:14,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:09:14,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:09:14,254 INFO L87 Difference]: Start difference. First operand 355 states. Second operand 4 states. [2020-10-15 04:09:14,813 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-15 04:09:17,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:09:17,184 INFO L93 Difference]: Finished difference Result 659 states and 1131 transitions. [2020-10-15 04:09:17,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:09:17,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-15 04:09:17,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:09:17,208 INFO L225 Difference]: With dead ends: 659 [2020-10-15 04:09:17,208 INFO L226 Difference]: Without dead ends: 493 [2020-10-15 04:09:17,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:09:17,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-10-15 04:09:17,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 490. [2020-10-15 04:09:17,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-10-15 04:09:17,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 805 transitions. [2020-10-15 04:09:17,320 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 805 transitions. Word has length 122 [2020-10-15 04:09:17,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:09:17,321 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 805 transitions. [2020-10-15 04:09:17,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:09:17,322 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 805 transitions. [2020-10-15 04:09:17,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-15 04:09:17,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:09:17,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:09:17,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:09:17,335 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:09:17,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:09:17,336 INFO L82 PathProgramCache]: Analyzing trace with hash 749676510, now seen corresponding path program 1 times [2020-10-15 04:09:17,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:09:17,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622824384] [2020-10-15 04:09:17,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:09:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:17,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:17,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:17,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:18,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:20,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:20,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:20,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:22,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:22,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-15 04:09:22,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:09:22,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:09:22,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:22,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:22,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:09:22,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:09:22,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-15 04:09:22,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:09:23,069 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:09:23,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:09:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:23,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:23,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:23,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:09:23,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:09:23,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-15 04:09:23,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:23,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:23,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:09:23,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:09:23,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:09:23,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:09:23,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:09:23,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622824384] [2020-10-15 04:09:23,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:09:23,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:09:23,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58108869] [2020-10-15 04:09:23,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:09:23,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:09:23,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:09:23,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:09:23,191 INFO L87 Difference]: Start difference. First operand 490 states and 805 transitions. Second operand 5 states. [2020-10-15 04:09:26,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:09:26,221 INFO L93 Difference]: Finished difference Result 1407 states and 2310 transitions. [2020-10-15 04:09:26,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:09:26,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-15 04:09:26,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:09:26,231 INFO L225 Difference]: With dead ends: 1407 [2020-10-15 04:09:26,231 INFO L226 Difference]: Without dead ends: 956 [2020-10-15 04:09:26,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:09:26,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2020-10-15 04:09:26,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 954. [2020-10-15 04:09:26,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 954 states. [2020-10-15 04:09:26,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1563 transitions. [2020-10-15 04:09:26,350 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1563 transitions. Word has length 125 [2020-10-15 04:09:26,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:09:26,351 INFO L479 AbstractCegarLoop]: Abstraction has 954 states and 1563 transitions. [2020-10-15 04:09:26,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:09:26,351 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1563 transitions. [2020-10-15 04:09:26,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-15 04:09:26,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:09:26,364 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] [2020-10-15 04:09:26,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:09:26,365 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:09:26,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:09:26,365 INFO L82 PathProgramCache]: Analyzing trace with hash -5406980, now seen corresponding path program 1 times [2020-10-15 04:09:26,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:09:26,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399045647] [2020-10-15 04:09:26,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:09:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:26,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:26,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:26,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:26,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:28,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:28,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:28,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:31,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:31,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-15 04:09:31,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:09:31,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 04:09:31,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:31,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:31,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:09:31,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:09:31,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 04:09:31,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:09:31,986 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:09:31,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:09:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:31,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:32,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:32,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:09:32,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:09:32,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 04:09:32,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:32,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:32,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:09:32,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:09:32,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:09:32,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:09:32,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:09:32,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399045647] [2020-10-15 04:09:32,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:09:32,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:09:32,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449061946] [2020-10-15 04:09:32,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:09:32,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:09:32,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:09:32,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:09:32,078 INFO L87 Difference]: Start difference. First operand 954 states and 1563 transitions. Second operand 5 states. [2020-10-15 04:09:34,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:09:34,809 INFO L93 Difference]: Finished difference Result 2773 states and 4539 transitions. [2020-10-15 04:09:34,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:09:34,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-15 04:09:34,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:09:34,822 INFO L225 Difference]: With dead ends: 2773 [2020-10-15 04:09:34,822 INFO L226 Difference]: Without dead ends: 1873 [2020-10-15 04:09:34,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:09:34,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2020-10-15 04:09:34,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1871. [2020-10-15 04:09:34,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1871 states. [2020-10-15 04:09:34,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 3053 transitions. [2020-10-15 04:09:34,970 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 3053 transitions. Word has length 126 [2020-10-15 04:09:34,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:09:34,971 INFO L479 AbstractCegarLoop]: Abstraction has 1871 states and 3053 transitions. [2020-10-15 04:09:34,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:09:34,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 3053 transitions. [2020-10-15 04:09:34,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-15 04:09:34,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:09:34,976 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] [2020-10-15 04:09:34,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:09:34,977 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:09:34,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:09:34,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1456442069, now seen corresponding path program 1 times [2020-10-15 04:09:34,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:09:34,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079592462] [2020-10-15 04:09:34,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:09:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:35,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:35,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:35,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:35,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:36,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:36,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:36,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:40,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:40,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-15 04:09:40,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:09:40,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:09:40,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:40,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:09:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:09:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-15 04:09:40,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:09:40,693 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:09:40,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:09:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:40,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:40,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:40,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:09:40,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:09:40,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 04:09:40,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:40,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:40,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:09:40,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:09:40,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:09:40,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:09:40,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:09:40,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079592462] [2020-10-15 04:09:40,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:09:40,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:09:40,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492442652] [2020-10-15 04:09:40,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:09:40,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:09:40,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:09:40,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:09:40,833 INFO L87 Difference]: Start difference. First operand 1871 states and 3053 transitions. Second operand 5 states. [2020-10-15 04:09:43,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:09:43,795 INFO L93 Difference]: Finished difference Result 5494 states and 8958 transitions. [2020-10-15 04:09:43,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:09:43,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-15 04:09:43,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:09:43,816 INFO L225 Difference]: With dead ends: 5494 [2020-10-15 04:09:43,817 INFO L226 Difference]: Without dead ends: 3664 [2020-10-15 04:09:43,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:09:43,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3664 states. [2020-10-15 04:09:44,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3664 to 3662. [2020-10-15 04:09:44,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3662 states. [2020-10-15 04:09:44,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 5937 transitions. [2020-10-15 04:09:44,078 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 5937 transitions. Word has length 127 [2020-10-15 04:09:44,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:09:44,079 INFO L479 AbstractCegarLoop]: Abstraction has 3662 states and 5937 transitions. [2020-10-15 04:09:44,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:09:44,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 5937 transitions. [2020-10-15 04:09:44,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-15 04:09:44,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:09:44,091 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] [2020-10-15 04:09:44,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:09:44,092 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:09:44,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:09:44,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1903640046, now seen corresponding path program 1 times [2020-10-15 04:09:44,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:09:44,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283571487] [2020-10-15 04:09:44,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:09:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:44,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:44,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:44,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:44,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:44,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:46,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:46,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:46,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:49,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:49,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-15 04:09:49,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:09:49,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:09:49,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:49,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:09:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:09:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 04:09:49,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:09:49,672 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:09:49,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:09:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:49,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:49,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:49,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:09:49,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:09:49,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:09:49,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:49,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:09:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:09:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:09:49,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:09:49,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:09:49,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283571487] [2020-10-15 04:09:49,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:09:49,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:09:49,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333239084] [2020-10-15 04:09:49,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:09:49,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:09:49,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:09:49,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:09:49,750 INFO L87 Difference]: Start difference. First operand 3662 states and 5937 transitions. Second operand 5 states. [2020-10-15 04:09:52,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:09:52,383 INFO L93 Difference]: Finished difference Result 10426 states and 16827 transitions. [2020-10-15 04:09:52,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:09:52,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-15 04:09:52,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:09:52,416 INFO L225 Difference]: With dead ends: 10426 [2020-10-15 04:09:52,416 INFO L226 Difference]: Without dead ends: 7040 [2020-10-15 04:09:52,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:09:52,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7040 states. [2020-10-15 04:09:52,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7040 to 7038. [2020-10-15 04:09:52,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7038 states. [2020-10-15 04:09:52,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7038 states to 7038 states and 11305 transitions. [2020-10-15 04:09:52,879 INFO L78 Accepts]: Start accepts. Automaton has 7038 states and 11305 transitions. Word has length 128 [2020-10-15 04:09:52,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:09:52,880 INFO L479 AbstractCegarLoop]: Abstraction has 7038 states and 11305 transitions. [2020-10-15 04:09:52,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:09:52,880 INFO L276 IsEmpty]: Start isEmpty. Operand 7038 states and 11305 transitions. [2020-10-15 04:09:52,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-15 04:09:52,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:09:52,896 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] [2020-10-15 04:09:52,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:09:52,896 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:09:52,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:09:52,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1686142277, now seen corresponding path program 1 times [2020-10-15 04:09:52,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:09:52,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145391102] [2020-10-15 04:09:52,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:09:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:52,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:53,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:53,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:53,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:53,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:53,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:53,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:56,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:56,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-15 04:09:56,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:09:56,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3839 [2020-10-15 04:09:56,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:56,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:56,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:09:56,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-15 04:09:56,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 04:09:56,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:09:57,317 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:09:57,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:09:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:57,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:57,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:57,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:09:57,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:09:57,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:09:57,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:57,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:57,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:09:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:09:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:09:57,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:09:57,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:09:57,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145391102] [2020-10-15 04:09:57,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:09:57,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:09:57,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714956104] [2020-10-15 04:09:57,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:09:57,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:09:57,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:09:57,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:09:57,367 INFO L87 Difference]: Start difference. First operand 7038 states and 11305 transitions. Second operand 4 states. [2020-10-15 04:09:57,842 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-15 04:10:00,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:10:00,159 INFO L93 Difference]: Finished difference Result 15298 states and 24875 transitions. [2020-10-15 04:10:00,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:10:00,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-15 04:10:00,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:10:00,216 INFO L225 Difference]: With dead ends: 15298 [2020-10-15 04:10:00,216 INFO L226 Difference]: Without dead ends: 11016 [2020-10-15 04:10:00,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:10:00,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11016 states. [2020-10-15 04:10:00,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11016 to 10982. [2020-10-15 04:10:00,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10982 states. [2020-10-15 04:10:01,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10982 states to 10982 states and 17729 transitions. [2020-10-15 04:10:01,014 INFO L78 Accepts]: Start accepts. Automaton has 10982 states and 17729 transitions. Word has length 128 [2020-10-15 04:10:01,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:10:01,014 INFO L479 AbstractCegarLoop]: Abstraction has 10982 states and 17729 transitions. [2020-10-15 04:10:01,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:10:01,014 INFO L276 IsEmpty]: Start isEmpty. Operand 10982 states and 17729 transitions. [2020-10-15 04:10:01,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-15 04:10:01,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:01,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:10:01,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:10:01,032 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:01,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:01,032 INFO L82 PathProgramCache]: Analyzing trace with hash 591006938, now seen corresponding path program 1 times [2020-10-15 04:10:01,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:01,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874900679] [2020-10-15 04:10:01,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:01,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:01,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:01,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:01,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:01,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:01,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:01,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:01,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:02,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:06,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:06,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-15 04:10:06,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:10:06,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 04:10:06,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:06,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:06,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:10:06,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:10:06,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-15 04:10:06,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:10:06,576 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:10:06,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:10:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:06,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:06,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:06,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:10:06,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:10:06,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:10:06,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:06,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:06,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:10:06,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:10:06,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:10:06,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:10:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:10:06,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874900679] [2020-10-15 04:10:06,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:10:06,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:10:06,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050962681] [2020-10-15 04:10:06,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:10:06,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:10:06,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:10:06,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:10:06,661 INFO L87 Difference]: Start difference. First operand 10982 states and 17729 transitions. Second operand 5 states. [2020-10-15 04:10:10,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:10:10,054 INFO L93 Difference]: Finished difference Result 31586 states and 50875 transitions. [2020-10-15 04:10:10,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:10:10,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-15 04:10:10,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:10:10,106 INFO L225 Difference]: With dead ends: 31586 [2020-10-15 04:10:10,106 INFO L226 Difference]: Without dead ends: 21304 [2020-10-15 04:10:10,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:10:10,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21304 states. [2020-10-15 04:10:11,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21304 to 21302. [2020-10-15 04:10:11,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21302 states. [2020-10-15 04:10:11,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21302 states to 21302 states and 34217 transitions. [2020-10-15 04:10:11,588 INFO L78 Accepts]: Start accepts. Automaton has 21302 states and 34217 transitions. Word has length 131 [2020-10-15 04:10:11,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:10:11,588 INFO L479 AbstractCegarLoop]: Abstraction has 21302 states and 34217 transitions. [2020-10-15 04:10:11,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:10:11,588 INFO L276 IsEmpty]: Start isEmpty. Operand 21302 states and 34217 transitions. [2020-10-15 04:10:11,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-15 04:10:11,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:11,628 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] [2020-10-15 04:10:11,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:10:11,628 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:11,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:11,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1162740106, now seen corresponding path program 1 times [2020-10-15 04:10:11,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:11,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590215124] [2020-10-15 04:10:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:11,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:11,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:11,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:11,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:12,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:12,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:12,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:13,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:13,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:16,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:16,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-15 04:10:16,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:10:16,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-15 04:10:16,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:16,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:16,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:10:16,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:10:16,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-15 04:10:16,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:10:17,179 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:10:17,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:10:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:17,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:17,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:17,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:10:17,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:10:17,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:10:17,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:17,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:17,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:10:17,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:10:17,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:10:17,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:10:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:10:17,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590215124] [2020-10-15 04:10:17,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:10:17,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:10:17,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212372076] [2020-10-15 04:10:17,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:10:17,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:10:17,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:10:17,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:10:17,242 INFO L87 Difference]: Start difference. First operand 21302 states and 34217 transitions. Second operand 5 states. [2020-10-15 04:10:21,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:10:21,374 INFO L93 Difference]: Finished difference Result 62210 states and 99713 transitions. [2020-10-15 04:10:21,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:10:21,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-15 04:10:21,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:10:21,468 INFO L225 Difference]: With dead ends: 62210 [2020-10-15 04:10:21,469 INFO L226 Difference]: Without dead ends: 41416 [2020-10-15 04:10:21,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:10:21,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41416 states. [2020-10-15 04:10:23,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41416 to 41414. [2020-10-15 04:10:23,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41414 states. [2020-10-15 04:10:23,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41414 states to 41414 states and 65967 transitions. [2020-10-15 04:10:23,990 INFO L78 Accepts]: Start accepts. Automaton has 41414 states and 65967 transitions. Word has length 132 [2020-10-15 04:10:23,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:10:23,990 INFO L479 AbstractCegarLoop]: Abstraction has 41414 states and 65967 transitions. [2020-10-15 04:10:23,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:10:23,990 INFO L276 IsEmpty]: Start isEmpty. Operand 41414 states and 65967 transitions. [2020-10-15 04:10:24,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-15 04:10:24,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:24,033 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] [2020-10-15 04:10:24,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:10:24,033 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:24,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:24,033 INFO L82 PathProgramCache]: Analyzing trace with hash 841954920, now seen corresponding path program 1 times [2020-10-15 04:10:24,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:24,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305381339] [2020-10-15 04:10:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:24,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:24,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:24,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:24,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:24,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:24,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:24,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:25,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:25,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:29,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:29,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-15 04:10:29,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:10:29,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-15 04:10:29,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:29,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:29,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:10:29,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:10:29,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-15 04:10:29,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:10:29,585 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:10:29,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:10:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:29,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:29,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:29,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:10:29,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:10:29,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:10:29,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:29,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:29,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:10:29,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:10:29,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:10:29,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:10:29,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:10:29,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305381339] [2020-10-15 04:10:29,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:10:29,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:10:29,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972673604] [2020-10-15 04:10:29,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:10:29,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:10:29,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:10:29,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:10:29,643 INFO L87 Difference]: Start difference. First operand 41414 states and 65967 transitions. Second operand 5 states. [2020-10-15 04:10:37,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:10:37,119 INFO L93 Difference]: Finished difference Result 120282 states and 191286 transitions. [2020-10-15 04:10:37,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:10:37,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-15 04:10:37,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:10:37,282 INFO L225 Difference]: With dead ends: 120282 [2020-10-15 04:10:37,283 INFO L226 Difference]: Without dead ends: 80904 [2020-10-15 04:10:37,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:10:37,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80904 states. [2020-10-15 04:10:44,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80904 to 80902. [2020-10-15 04:10:44,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80902 states. [2020-10-15 04:10:44,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80902 states to 80902 states and 127988 transitions. [2020-10-15 04:10:44,854 INFO L78 Accepts]: Start accepts. Automaton has 80902 states and 127988 transitions. Word has length 133 [2020-10-15 04:10:44,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:10:44,855 INFO L479 AbstractCegarLoop]: Abstraction has 80902 states and 127988 transitions. [2020-10-15 04:10:44,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:10:44,855 INFO L276 IsEmpty]: Start isEmpty. Operand 80902 states and 127988 transitions. [2020-10-15 04:10:44,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-15 04:10:44,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:44,905 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] [2020-10-15 04:10:44,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:10:44,905 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:44,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:44,906 INFO L82 PathProgramCache]: Analyzing trace with hash 2032133079, now seen corresponding path program 1 times [2020-10-15 04:10:44,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:44,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834170104] [2020-10-15 04:10:44,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:44,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:45,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:45,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:45,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:45,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:45,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:46,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:46,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:46,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:49,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:49,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-15 04:10:49,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:10:49,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-15 04:10:49,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:49,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:49,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:10:49,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-15 04:10:49,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 04:10:49,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:10:50,455 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:10:50,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:10:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:50,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:50,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:50,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:10:50,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:10:50,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:10:50,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:50,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:50,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:10:50,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:10:50,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:10:50,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:10:50,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:10:50,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834170104] [2020-10-15 04:10:50,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:10:50,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:10:50,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45585942] [2020-10-15 04:10:50,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:10:50,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:10:50,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:10:50,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:10:50,515 INFO L87 Difference]: Start difference. First operand 80902 states and 127988 transitions. Second operand 4 states. [2020-10-15 04:10:50,999 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-15 04:11:02,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:11:02,982 INFO L93 Difference]: Finished difference Result 198922 states and 318198 transitions. [2020-10-15 04:11:02,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:11:02,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-10-15 04:11:02,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:11:03,236 INFO L225 Difference]: With dead ends: 198922 [2020-10-15 04:11:03,237 INFO L226 Difference]: Without dead ends: 137608 [2020-10-15 04:11:03,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:11:03,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137608 states. [2020-10-15 04:11:14,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137608 to 137094. [2020-10-15 04:11:14,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137094 states. [2020-10-15 04:11:14,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137094 states to 137094 states and 217716 transitions. [2020-10-15 04:11:14,921 INFO L78 Accepts]: Start accepts. Automaton has 137094 states and 217716 transitions. Word has length 134 [2020-10-15 04:11:14,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:11:14,921 INFO L479 AbstractCegarLoop]: Abstraction has 137094 states and 217716 transitions. [2020-10-15 04:11:14,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:11:14,921 INFO L276 IsEmpty]: Start isEmpty. Operand 137094 states and 217716 transitions. [2020-10-15 04:11:14,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-15 04:11:14,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:11:14,988 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] [2020-10-15 04:11:14,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:11:14,989 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:11:14,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:11:14,989 INFO L82 PathProgramCache]: Analyzing trace with hash -236839289, now seen corresponding path program 1 times [2020-10-15 04:11:14,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:11:14,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872230568] [2020-10-15 04:11:14,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:11:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:15,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:15,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:15,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:15,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:15,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:15,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:15,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:18,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:18,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:18,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:18,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:21,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:21,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-15 04:11:21,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:11:21,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6251 [2020-10-15 04:11:21,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:21,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:21,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:11:21,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:11:21,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-15 04:11:21,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:11:21,786 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:11:21,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:11:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:21,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:21,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:21,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:11:21,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:11:21,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:11:21,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:21,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:21,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:11:21,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:11:21,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:11:21,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:11:21,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:11:21,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872230568] [2020-10-15 04:11:21,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:11:21,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:11:21,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811130734] [2020-10-15 04:11:21,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:11:21,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:11:21,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:11:21,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:11:21,843 INFO L87 Difference]: Start difference. First operand 137094 states and 217716 transitions. Second operand 5 states. [2020-10-15 04:11:43,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:11:43,860 INFO L93 Difference]: Finished difference Result 402940 states and 639460 transitions. [2020-10-15 04:11:43,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:11:43,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-15 04:11:43,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:11:44,285 INFO L225 Difference]: With dead ends: 402940 [2020-10-15 04:11:44,285 INFO L226 Difference]: Without dead ends: 267966 [2020-10-15 04:11:44,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:11:45,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267966 states. [2020-10-15 04:12:12,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267966 to 267964. [2020-10-15 04:12:12,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267964 states. [2020-10-15 04:12:12,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267964 states to 267964 states and 423322 transitions. [2020-10-15 04:12:12,793 INFO L78 Accepts]: Start accepts. Automaton has 267964 states and 423322 transitions. Word has length 137 [2020-10-15 04:12:12,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:12:12,794 INFO L479 AbstractCegarLoop]: Abstraction has 267964 states and 423322 transitions. [2020-10-15 04:12:12,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:12:12,794 INFO L276 IsEmpty]: Start isEmpty. Operand 267964 states and 423322 transitions. [2020-10-15 04:12:12,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-15 04:12:12,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:12:12,895 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] [2020-10-15 04:12:12,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:12:12,895 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:12:12,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:12:12,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1379909670, now seen corresponding path program 1 times [2020-10-15 04:12:12,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:12:12,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533242650] [2020-10-15 04:12:12,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:12:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:12,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:12,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:13,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:13,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:13,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:13,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:13,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:15,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:15,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:15,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:16,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:17,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:17,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-15 04:12:17,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:12:17,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 04:12:17,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:17,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:17,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:12:17,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:12:17,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-15 04:12:17,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:12:18,439 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:12:18,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:12:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:18,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:18,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:18,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:12:18,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:12:18,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:12:18,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:18,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:18,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:12:18,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:12:18,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:12:18,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:12:18,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:12:18,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533242650] [2020-10-15 04:12:18,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:12:18,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:12:18,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990518269] [2020-10-15 04:12:18,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:12:18,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:12:18,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:12:18,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:12:18,514 INFO L87 Difference]: Start difference. First operand 267964 states and 423322 transitions. Second operand 5 states.