/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=DEEPEST --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 language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:48:21,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:48:21,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:48:21,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:48:21,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:48:21,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:48:21,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:48:21,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:48:21,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:48:21,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:48:21,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:48:21,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:48:21,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:48:21,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:48:21,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:48:21,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:48:21,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:48:21,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:48:21,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:48:21,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:48:21,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:48:21,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:48:21,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:48:21,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:48:21,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:48:21,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:48:21,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:48:21,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:48:21,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:48:21,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:48:21,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:48:21,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:48:21,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:48:21,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:48:21,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:48:21,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:48:21,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:48:21,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:48:21,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:48:21,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:48:21,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:48:21,205 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 [2020-10-27 23:48:21,256 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:48:21,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:48:21,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:48:21,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:48:21,261 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:48:21,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:48:21,262 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:48:21,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:48:21,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:48:21,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:48:21,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:48:21,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:48:21,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:48:21,264 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:48:21,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:48:21,264 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:48:21,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:48:21,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:48:21,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:48:21,265 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:48:21,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:48:21,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:48:21,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:48:21,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:48:21,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:48:21,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:48:21,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:48:21,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:48:21,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:48:21,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:48:21,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:48:21,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:48:21,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:48:21,764 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:48:21,765 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:48:21,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-27 23:48:21,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b628a373a/33d7d52ebf2d403494b39a966fd10bf5/FLAG224f6fce9 [2020-10-27 23:48:22,750 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:48:22,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-27 23:48:22,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b628a373a/33d7d52ebf2d403494b39a966fd10bf5/FLAG224f6fce9 [2020-10-27 23:48:22,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b628a373a/33d7d52ebf2d403494b39a966fd10bf5 [2020-10-27 23:48:22,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:48:22,856 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:48:22,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:48:22,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:48:22,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:48:22,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:48:22" (1/1) ... [2020-10-27 23:48:22,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@141cb667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:22, skipping insertion in model container [2020-10-27 23:48:22,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:48:22" (1/1) ... [2020-10-27 23:48:22,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:48:23,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:48:23,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:48:23,852 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:48:24,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:48:24,190 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:48:24,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:24 WrapperNode [2020-10-27 23:48:24,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:48:24,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:48:24,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:48:24,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:48:24,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:24" (1/1) ... [2020-10-27 23:48:24,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:24" (1/1) ... [2020-10-27 23:48:24,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:24" (1/1) ... [2020-10-27 23:48:24,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:24" (1/1) ... [2020-10-27 23:48:24,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:24" (1/1) ... [2020-10-27 23:48:24,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:24" (1/1) ... [2020-10-27 23:48:24,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:24" (1/1) ... [2020-10-27 23:48:24,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:48:24,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:48:24,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:48:24,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:48:24,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:24" (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 [2020-10-27 23:48:24,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:48:24,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:48:24,449 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:48:24,449 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:48:24,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:48:24,450 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:48:24,451 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:48:24,451 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:48:24,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:48:24,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:48:24,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:48:24,452 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:48:24,452 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:48:24,452 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:48:24,453 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:48:24,454 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:48:24,454 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:48:24,454 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:48:24,454 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:48:24,454 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:48:24,454 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:48:24,454 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:48:24,455 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:48:24,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:48:24,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:48:24,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:48:24,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:48:24,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:48:24,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:48:27,065 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:48:27,065 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:48:27,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:48:27 BoogieIcfgContainer [2020-10-27 23:48:27,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:48:27,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:48:27,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:48:27,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:48:27,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:48:22" (1/3) ... [2020-10-27 23:48:27,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc4b25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:48:27, skipping insertion in model container [2020-10-27 23:48:27,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:24" (2/3) ... [2020-10-27 23:48:27,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc4b25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:48:27, skipping insertion in model container [2020-10-27 23:48:27,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:48:27" (3/3) ... [2020-10-27 23:48:27,079 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-27 23:48:27,092 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:48:27,098 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:48:27,111 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:48:27,145 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:48:27,145 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:48:27,145 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:48:27,145 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:48:27,145 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:48:27,145 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:48:27,146 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:48:27,146 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:48:27,177 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states. [2020-10-27 23:48:27,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 23:48:27,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:27,204 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] [2020-10-27 23:48:27,204 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:27,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:27,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1615027478, now seen corresponding path program 1 times [2020-10-27 23:48:27,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:27,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667706264] [2020-10-27 23:48:27,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:27,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:28,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:28,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:28,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:28,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:28,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:30,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:30,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:31,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:32,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:32,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 23:48:32,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:48:32,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 23:48:32,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:48:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:48:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 23:48:32,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:48:33,881 WARN L193 SmtUtils]: Spent 945.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 23:48:33,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:33,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:33,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:33,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:33,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:33,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 23:48:33,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:33,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:48:33,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:48:33,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667706264] [2020-10-27 23:48:33,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:33,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:48:33,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337485979] [2020-10-27 23:48:34,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:48:34,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:34,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:48:34,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:48:34,028 INFO L87 Difference]: Start difference. First operand 638 states. Second operand 7 states. [2020-10-27 23:48:35,133 WARN L193 SmtUtils]: Spent 956.00 ms on a formula simplification that was a NOOP. DAG size: 356 [2020-10-27 23:48:41,728 WARN L193 SmtUtils]: Spent 889.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 23:48:42,889 WARN L193 SmtUtils]: Spent 944.00 ms on a formula simplification that was a NOOP. DAG size: 356 [2020-10-27 23:48:44,040 WARN L193 SmtUtils]: Spent 917.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-27 23:48:44,996 WARN L193 SmtUtils]: Spent 925.00 ms on a formula simplification that was a NOOP. DAG size: 354 [2020-10-27 23:48:46,851 WARN L193 SmtUtils]: Spent 928.00 ms on a formula simplification that was a NOOP. DAG size: 356 [2020-10-27 23:48:47,836 WARN L193 SmtUtils]: Spent 948.00 ms on a formula simplification that was a NOOP. DAG size: 355 [2020-10-27 23:48:48,979 WARN L193 SmtUtils]: Spent 847.00 ms on a formula simplification that was a NOOP. DAG size: 357 [2020-10-27 23:48:49,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:48:49,077 INFO L93 Difference]: Finished difference Result 2016 states and 3420 transitions. [2020-10-27 23:48:49,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:48:49,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-27 23:48:49,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:48:49,119 INFO L225 Difference]: With dead ends: 2016 [2020-10-27 23:48:49,120 INFO L226 Difference]: Without dead ends: 1594 [2020-10-27 23:48:49,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:48:49,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2020-10-27 23:48:49,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 977. [2020-10-27 23:48:49,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2020-10-27 23:48:49,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1325 transitions. [2020-10-27 23:48:49,301 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1325 transitions. Word has length 77 [2020-10-27 23:48:49,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:48:49,302 INFO L481 AbstractCegarLoop]: Abstraction has 977 states and 1325 transitions. [2020-10-27 23:48:49,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:48:49,302 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1325 transitions. [2020-10-27 23:48:49,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 23:48:49,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:49,310 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] [2020-10-27 23:48:49,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:48:49,310 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:49,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:49,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1121461951, now seen corresponding path program 1 times [2020-10-27 23:48:49,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:49,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712722230] [2020-10-27 23:48:49,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:49,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:49,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:49,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:49,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:49,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:51,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:51,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:51,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:52,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:53,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:53,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:54,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:54,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 23:48:54,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:48:54,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 23:48:54,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:54,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:48:54,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:48:54,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 23:48:54,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:48:55,317 WARN L193 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 23:48:55,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:55,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:55,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:55,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:55,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:55,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 23:48:55,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:55,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:55,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:55,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:55,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:55,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:48:55,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712722230] [2020-10-27 23:48:55,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:55,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:48:55,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111515123] [2020-10-27 23:48:55,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:48:55,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:55,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:48:55,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:48:55,398 INFO L87 Difference]: Start difference. First operand 977 states and 1325 transitions. Second operand 7 states. [2020-10-27 23:48:56,480 WARN L193 SmtUtils]: Spent 984.00 ms on a formula simplification that was a NOOP. DAG size: 356 [2020-10-27 23:49:00,686 WARN L193 SmtUtils]: Spent 982.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 23:49:01,890 WARN L193 SmtUtils]: Spent 951.00 ms on a formula simplification that was a NOOP. DAG size: 356 [2020-10-27 23:49:02,922 WARN L193 SmtUtils]: Spent 932.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-27 23:49:03,990 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 354 [2020-10-27 23:49:05,839 WARN L193 SmtUtils]: Spent 879.00 ms on a formula simplification that was a NOOP. DAG size: 356 [2020-10-27 23:49:06,706 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 355 [2020-10-27 23:49:07,807 WARN L193 SmtUtils]: Spent 886.00 ms on a formula simplification that was a NOOP. DAG size: 357 [2020-10-27 23:49:07,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:07,874 INFO L93 Difference]: Finished difference Result 3208 states and 4530 transitions. [2020-10-27 23:49:07,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:49:07,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-27 23:49:07,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:07,889 INFO L225 Difference]: With dead ends: 3208 [2020-10-27 23:49:07,890 INFO L226 Difference]: Without dead ends: 2757 [2020-10-27 23:49:07,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:49:07,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2020-10-27 23:49:07,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 1459. [2020-10-27 23:49:07,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1459 states. [2020-10-27 23:49:08,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2050 transitions. [2020-10-27 23:49:08,008 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2050 transitions. Word has length 78 [2020-10-27 23:49:08,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:08,008 INFO L481 AbstractCegarLoop]: Abstraction has 1459 states and 2050 transitions. [2020-10-27 23:49:08,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:49:08,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2050 transitions. [2020-10-27 23:49:08,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 23:49:08,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:08,014 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] [2020-10-27 23:49:08,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:49:08,015 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:08,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:08,015 INFO L82 PathProgramCache]: Analyzing trace with hash -963902373, now seen corresponding path program 1 times [2020-10-27 23:49:08,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:08,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964849481] [2020-10-27 23:49:08,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:08,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:08,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:08,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:08,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:08,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:09,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:11,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:11,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:12,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:12,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:12,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:13,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:13,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 23:49:13,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:49:13,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 23:49:13,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:13,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:49:13,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:49:13,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 23:49:13,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:14,056 WARN L193 SmtUtils]: Spent 861.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 23:49:14,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:14,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:14,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:14,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:14,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:14,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 23:49:14,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:14,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:14,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:14,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:14,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:14,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:49:14,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964849481] [2020-10-27 23:49:14,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:14,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:49:14,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071422597] [2020-10-27 23:49:14,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:49:14,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:14,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:49:14,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:49:14,132 INFO L87 Difference]: Start difference. First operand 1459 states and 2050 transitions. Second operand 7 states. [2020-10-27 23:49:15,205 WARN L193 SmtUtils]: Spent 974.00 ms on a formula simplification that was a NOOP. DAG size: 356 [2020-10-27 23:49:19,360 WARN L193 SmtUtils]: Spent 896.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 23:49:20,437 WARN L193 SmtUtils]: Spent 907.00 ms on a formula simplification that was a NOOP. DAG size: 356 [2020-10-27 23:49:21,500 WARN L193 SmtUtils]: Spent 866.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-27 23:49:22,470 WARN L193 SmtUtils]: Spent 924.00 ms on a formula simplification that was a NOOP. DAG size: 354 [2020-10-27 23:49:24,208 WARN L193 SmtUtils]: Spent 927.00 ms on a formula simplification that was a NOOP. DAG size: 356 [2020-10-27 23:49:25,188 WARN L193 SmtUtils]: Spent 948.00 ms on a formula simplification that was a NOOP. DAG size: 355 [2020-10-27 23:49:26,396 WARN L193 SmtUtils]: Spent 953.00 ms on a formula simplification that was a NOOP. DAG size: 357 [2020-10-27 23:49:26,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:26,465 INFO L93 Difference]: Finished difference Result 3683 states and 5276 transitions. [2020-10-27 23:49:26,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:49:26,466 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-27 23:49:26,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:26,483 INFO L225 Difference]: With dead ends: 3683 [2020-10-27 23:49:26,483 INFO L226 Difference]: Without dead ends: 3091 [2020-10-27 23:49:26,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:49:26,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3091 states. [2020-10-27 23:49:26,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3091 to 1695. [2020-10-27 23:49:26,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1695 states. [2020-10-27 23:49:26,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2399 transitions. [2020-10-27 23:49:26,595 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2399 transitions. Word has length 78 [2020-10-27 23:49:26,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:26,595 INFO L481 AbstractCegarLoop]: Abstraction has 1695 states and 2399 transitions. [2020-10-27 23:49:26,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:49:26,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2399 transitions. [2020-10-27 23:49:26,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 23:49:26,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:26,600 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] [2020-10-27 23:49:26,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:49:26,600 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:26,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:26,601 INFO L82 PathProgramCache]: Analyzing trace with hash -6497836, now seen corresponding path program 1 times [2020-10-27 23:49:26,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:26,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326681456] [2020-10-27 23:49:26,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:26,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:26,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:26,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:27,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:27,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:28,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:28,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:28,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:28,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:29,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:29,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:29,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:30,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:30,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:30,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:31,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:31,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:31,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 23:49:31,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:49:31,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:49:31,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:49:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:49:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 23:49:31,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:32,794 WARN L193 SmtUtils]: Spent 942.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 23:49:32,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:32,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:32,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:32,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:32,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:32,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 23:49:32,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:32,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:32,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:32,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:32,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:49:32,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326681456] [2020-10-27 23:49:32,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:32,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:49:32,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078358715] [2020-10-27 23:49:32,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:49:32,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:32,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:49:32,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:49:32,865 INFO L87 Difference]: Start difference. First operand 1695 states and 2399 transitions. Second operand 6 states. [2020-10-27 23:49:33,794 WARN L193 SmtUtils]: Spent 854.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-27 23:49:38,111 WARN L193 SmtUtils]: Spent 901.00 ms on a formula simplification that was a NOOP. DAG size: 354 [2020-10-27 23:49:39,392 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-27 23:49:41,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:41,278 INFO L93 Difference]: Finished difference Result 8301 states and 12255 transitions. [2020-10-27 23:49:41,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:49:41,278 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-10-27 23:49:41,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:41,316 INFO L225 Difference]: With dead ends: 8301 [2020-10-27 23:49:41,316 INFO L226 Difference]: Without dead ends: 7579 [2020-10-27 23:49:41,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:49:41,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7579 states. [2020-10-27 23:49:41,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7579 to 4936. [2020-10-27 23:49:41,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4936 states. [2020-10-27 23:49:41,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4936 states to 4936 states and 7205 transitions. [2020-10-27 23:49:41,662 INFO L78 Accepts]: Start accepts. Automaton has 4936 states and 7205 transitions. Word has length 79 [2020-10-27 23:49:41,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:41,662 INFO L481 AbstractCegarLoop]: Abstraction has 4936 states and 7205 transitions. [2020-10-27 23:49:41,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:49:41,663 INFO L276 IsEmpty]: Start isEmpty. Operand 4936 states and 7205 transitions. [2020-10-27 23:49:41,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 23:49:41,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:41,671 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] [2020-10-27 23:49:41,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:49:41,671 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:41,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:41,672 INFO L82 PathProgramCache]: Analyzing trace with hash 212376577, now seen corresponding path program 1 times [2020-10-27 23:49:41,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:41,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983866297] [2020-10-27 23:49:41,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:41,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:41,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:41,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:42,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:42,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:43,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:43,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:44,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:44,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:46,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:46,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 23:49:46,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:49:46,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:49:46,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:46,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:49:46,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:49:46,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 23:49:46,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:47,858 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 23:49:47,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:47,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:47,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:47,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:47,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:47,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:49:47,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:47,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:47,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:47,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:49:47,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983866297] [2020-10-27 23:49:47,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:47,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:49:47,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530675642] [2020-10-27 23:49:47,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:49:47,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:47,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:49:47,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:49:47,924 INFO L87 Difference]: Start difference. First operand 4936 states and 7205 transitions. Second operand 7 states. [2020-10-27 23:49:48,996 WARN L193 SmtUtils]: Spent 971.00 ms on a formula simplification that was a NOOP. DAG size: 356 [2020-10-27 23:49:53,586 WARN L193 SmtUtils]: Spent 919.00 ms on a formula simplification that was a NOOP. DAG size: 356 [2020-10-27 23:49:54,728 WARN L193 SmtUtils]: Spent 981.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 23:49:55,916 WARN L193 SmtUtils]: Spent 938.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-27 23:49:56,975 WARN L193 SmtUtils]: Spent 933.00 ms on a formula simplification that was a NOOP. DAG size: 354 [2020-10-27 23:49:59,295 WARN L193 SmtUtils]: Spent 949.00 ms on a formula simplification that was a NOOP. DAG size: 355 [2020-10-27 23:50:00,315 WARN L193 SmtUtils]: Spent 984.00 ms on a formula simplification that was a NOOP. DAG size: 356 [2020-10-27 23:50:01,593 WARN L193 SmtUtils]: Spent 966.00 ms on a formula simplification that was a NOOP. DAG size: 357 [2020-10-27 23:50:01,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:01,647 INFO L93 Difference]: Finished difference Result 17529 states and 26250 transitions. [2020-10-27 23:50:01,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:50:01,648 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-10-27 23:50:01,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:01,716 INFO L225 Difference]: With dead ends: 17529 [2020-10-27 23:50:01,716 INFO L226 Difference]: Without dead ends: 14691 [2020-10-27 23:50:01,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:50:01,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14691 states. [2020-10-27 23:50:02,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14691 to 6727. [2020-10-27 23:50:02,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6727 states. [2020-10-27 23:50:02,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6727 states to 6727 states and 9925 transitions. [2020-10-27 23:50:02,418 INFO L78 Accepts]: Start accepts. Automaton has 6727 states and 9925 transitions. Word has length 79 [2020-10-27 23:50:02,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:02,419 INFO L481 AbstractCegarLoop]: Abstraction has 6727 states and 9925 transitions. [2020-10-27 23:50:02,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:50:02,419 INFO L276 IsEmpty]: Start isEmpty. Operand 6727 states and 9925 transitions. [2020-10-27 23:50:02,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 23:50:02,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:02,433 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] [2020-10-27 23:50:02,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:50:02,434 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:02,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:02,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1528115976, now seen corresponding path program 1 times [2020-10-27 23:50:02,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:02,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939228433] [2020-10-27 23:50:02,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:02,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:02,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:02,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:02,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:03,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:03,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:03,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:03,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:04,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:04,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:05,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:06,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:07,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:07,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:07,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 23:50:07,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:50:07,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 23:50:07,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:07,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 23:50:07,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:50:07,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 23:50:07,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:08,857 WARN L193 SmtUtils]: Spent 936.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 23:50:08,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:08,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:08,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:08,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:08,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:08,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:50:08,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:08,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:08,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:08,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:08,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:08,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:50:08,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939228433] [2020-10-27 23:50:08,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:08,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:50:08,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561738975] [2020-10-27 23:50:08,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:50:08,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:08,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:50:08,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:50:08,942 INFO L87 Difference]: Start difference. First operand 6727 states and 9925 transitions. Second operand 10 states. [2020-10-27 23:50:10,294 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 374 [2020-10-27 23:50:15,239 WARN L193 SmtUtils]: Spent 998.00 ms on a formula simplification that was a NOOP. DAG size: 354 [2020-10-27 23:50:17,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:17,359 INFO L93 Difference]: Finished difference Result 21098 states and 31811 transitions. [2020-10-27 23:50:17,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 23:50:17,360 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 80 [2020-10-27 23:50:17,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:17,402 INFO L225 Difference]: With dead ends: 21098 [2020-10-27 23:50:17,402 INFO L226 Difference]: Without dead ends: 17187 [2020-10-27 23:50:17,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-27 23:50:17,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17187 states. [2020-10-27 23:50:18,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17187 to 6751. [2020-10-27 23:50:18,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6751 states. [2020-10-27 23:50:18,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6751 states to 6751 states and 9955 transitions. [2020-10-27 23:50:18,104 INFO L78 Accepts]: Start accepts. Automaton has 6751 states and 9955 transitions. Word has length 80 [2020-10-27 23:50:18,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:18,106 INFO L481 AbstractCegarLoop]: Abstraction has 6751 states and 9955 transitions. [2020-10-27 23:50:18,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:50:18,106 INFO L276 IsEmpty]: Start isEmpty. Operand 6751 states and 9955 transitions. [2020-10-27 23:50:18,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 23:50:18,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:18,118 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] [2020-10-27 23:50:18,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:50:18,118 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:18,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:18,119 INFO L82 PathProgramCache]: Analyzing trace with hash 971138707, now seen corresponding path program 1 times [2020-10-27 23:50:18,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:18,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068469505] [2020-10-27 23:50:18,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:18,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:18,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:18,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:18,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:19,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:19,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:20,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:21,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:21,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:21,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:23,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:23,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 23:50:23,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:50:23,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 23:50:23,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:23,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:50:23,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:50:23,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 23:50:23,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:24,264 WARN L193 SmtUtils]: Spent 985.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 23:50:24,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:24,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:24,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:24,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:24,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:24,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:50:24,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:24,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:24,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:24,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:24,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:24,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:50:24,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068469505] [2020-10-27 23:50:24,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:24,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:50:24,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860519201] [2020-10-27 23:50:24,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:50:24,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:24,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:50:24,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:50:24,327 INFO L87 Difference]: Start difference. First operand 6751 states and 9955 transitions. Second operand 6 states. [2020-10-27 23:50:25,339 WARN L193 SmtUtils]: Spent 929.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-27 23:50:30,250 WARN L193 SmtUtils]: Spent 952.00 ms on a formula simplification that was a NOOP. DAG size: 354 [2020-10-27 23:50:31,670 WARN L193 SmtUtils]: Spent 936.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-27 23:50:34,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:34,304 INFO L93 Difference]: Finished difference Result 14477 states and 21636 transitions. [2020-10-27 23:50:34,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:50:34,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-27 23:50:34,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:34,335 INFO L225 Difference]: With dead ends: 14477 [2020-10-27 23:50:34,335 INFO L226 Difference]: Without dead ends: 11768 [2020-10-27 23:50:34,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:50:34,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11768 states. [2020-10-27 23:50:35,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11768 to 6469. [2020-10-27 23:50:35,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6469 states. [2020-10-27 23:50:35,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6469 states to 6469 states and 9523 transitions. [2020-10-27 23:50:35,038 INFO L78 Accepts]: Start accepts. Automaton has 6469 states and 9523 transitions. Word has length 80 [2020-10-27 23:50:35,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:35,039 INFO L481 AbstractCegarLoop]: Abstraction has 6469 states and 9523 transitions. [2020-10-27 23:50:35,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:50:35,039 INFO L276 IsEmpty]: Start isEmpty. Operand 6469 states and 9523 transitions. [2020-10-27 23:50:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 23:50:35,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:35,047 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] [2020-10-27 23:50:35,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:50:35,048 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:35,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:35,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1840615230, now seen corresponding path program 1 times [2020-10-27 23:50:35,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:35,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113519083] [2020-10-27 23:50:35,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:35,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:35,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:35,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:35,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:35,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:35,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:36,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:36,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:36,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:37,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:37,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:38,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:39,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:40,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:40,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 23:50:40,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:50:40,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 23:50:40,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:40,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 23:50:40,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 23:50:40,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 23:50:40,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:41,266 WARN L193 SmtUtils]: Spent 984.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 23:50:41,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:41,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:41,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:41,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:41,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:41,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:50:41,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:41,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:50:41,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113519083] [2020-10-27 23:50:41,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:41,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:50:41,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432421796] [2020-10-27 23:50:41,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:50:41,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:41,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:50:41,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:50:41,334 INFO L87 Difference]: Start difference. First operand 6469 states and 9523 transitions. Second operand 10 states. [2020-10-27 23:50:42,424 WARN L193 SmtUtils]: Spent 967.00 ms on a formula simplification that was a NOOP. DAG size: 360 [2020-10-27 23:50:46,465 WARN L193 SmtUtils]: Spent 950.00 ms on a formula simplification that was a NOOP. DAG size: 354 [2020-10-27 23:50:49,525 WARN L193 SmtUtils]: Spent 962.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-27 23:50:50,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:50,696 INFO L93 Difference]: Finished difference Result 32173 states and 48309 transitions. [2020-10-27 23:50:50,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 23:50:50,697 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 80 [2020-10-27 23:50:50,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:50,746 INFO L225 Difference]: With dead ends: 32173 [2020-10-27 23:50:50,746 INFO L226 Difference]: Without dead ends: 28268 [2020-10-27 23:50:50,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:50:50,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28268 states. [2020-10-27 23:50:51,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28268 to 6471. [2020-10-27 23:50:51,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6471 states. [2020-10-27 23:50:51,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6471 states to 6471 states and 9509 transitions. [2020-10-27 23:50:51,540 INFO L78 Accepts]: Start accepts. Automaton has 6471 states and 9509 transitions. Word has length 80 [2020-10-27 23:50:51,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:51,540 INFO L481 AbstractCegarLoop]: Abstraction has 6471 states and 9509 transitions. [2020-10-27 23:50:51,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:50:51,540 INFO L276 IsEmpty]: Start isEmpty. Operand 6471 states and 9509 transitions. [2020-10-27 23:50:51,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 23:50:51,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:51,548 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] [2020-10-27 23:50:51,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:50:51,548 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:51,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:51,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1562245025, now seen corresponding path program 1 times [2020-10-27 23:50:51,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:51,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245248203] [2020-10-27 23:50:51,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:51,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:51,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:51,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:51,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:52,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:52,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:52,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:53,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:53,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:56,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:56,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 23:50:56,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:50:56,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 23:50:56,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 23:50:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:50:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 23:50:56,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:57,865 WARN L193 SmtUtils]: Spent 938.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 23:50:57,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:57,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:57,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:57,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:57,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:57,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:50:57,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:57,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:57,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:57,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:57,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:50:57,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245248203] [2020-10-27 23:50:57,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:57,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:50:57,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995911252] [2020-10-27 23:50:57,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:50:57,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:57,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:50:57,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:50:57,937 INFO L87 Difference]: Start difference. First operand 6471 states and 9509 transitions. Second operand 11 states. [2020-10-27 23:50:59,127 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 369 [2020-10-27 23:51:04,444 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 367 [2020-10-27 23:51:05,986 WARN L193 SmtUtils]: Spent 936.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-27 23:51:09,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:51:09,426 INFO L93 Difference]: Finished difference Result 20705 states and 30900 transitions. [2020-10-27 23:51:09,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 23:51:09,427 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-10-27 23:51:09,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:51:09,453 INFO L225 Difference]: With dead ends: 20705 [2020-10-27 23:51:09,453 INFO L226 Difference]: Without dead ends: 18043 [2020-10-27 23:51:09,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=185, Invalid=685, Unknown=0, NotChecked=0, Total=870 [2020-10-27 23:51:09,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18043 states. [2020-10-27 23:51:10,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18043 to 6453. [2020-10-27 23:51:10,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6453 states. [2020-10-27 23:51:10,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 9485 transitions. [2020-10-27 23:51:10,353 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 9485 transitions. Word has length 80 [2020-10-27 23:51:10,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:51:10,353 INFO L481 AbstractCegarLoop]: Abstraction has 6453 states and 9485 transitions. [2020-10-27 23:51:10,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:51:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 9485 transitions. [2020-10-27 23:51:10,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 23:51:10,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:51:10,360 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] [2020-10-27 23:51:10,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:51:10,361 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:51:10,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:51:10,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1948178837, now seen corresponding path program 1 times [2020-10-27 23:51:10,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:51:10,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990327298] [2020-10-27 23:51:10,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:51:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:10,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:10,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:10,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:10,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:10,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:11,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:11,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:11,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:11,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:11,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:11,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:12,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:12,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:13,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:15,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:15,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:15,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:15,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 23:51:15,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:51:15,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:51:15,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:15,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 23:51:15,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:51:15,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 23:51:15,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:16,582 WARN L193 SmtUtils]: Spent 921.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 23:51:16,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:51:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:16,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:16,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:16,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:51:16,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:51:16,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:51:16,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:16,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:51:16,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:51:16,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:51:16,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:51:16,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990327298] [2020-10-27 23:51:16,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:51:16,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 23:51:16,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438190676] [2020-10-27 23:51:16,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 23:51:16,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:51:16,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 23:51:16,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:51:16,640 INFO L87 Difference]: Start difference. First operand 6453 states and 9485 transitions. Second operand 12 states. [2020-10-27 23:51:17,691 WARN L193 SmtUtils]: Spent 955.00 ms on a formula simplification that was a NOOP. DAG size: 354 [2020-10-27 23:51:23,218 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 23:51:24,347 WARN L193 SmtUtils]: Spent 945.00 ms on a formula simplification that was a NOOP. DAG size: 355 [2020-10-27 23:51:25,461 WARN L193 SmtUtils]: Spent 917.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-27 23:51:26,599 WARN L193 SmtUtils]: Spent 981.00 ms on a formula simplification that was a NOOP. DAG size: 365 [2020-10-27 23:51:27,771 WARN L193 SmtUtils]: Spent 990.00 ms on a formula simplification that was a NOOP. DAG size: 362 [2020-10-27 23:51:31,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:51:31,664 INFO L93 Difference]: Finished difference Result 30679 states and 46190 transitions. [2020-10-27 23:51:31,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 23:51:31,664 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-27 23:51:31,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:51:31,695 INFO L225 Difference]: With dead ends: 30679 [2020-10-27 23:51:31,695 INFO L226 Difference]: Without dead ends: 27089 [2020-10-27 23:51:31,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=234, Invalid=1026, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 23:51:31,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27089 states. [2020-10-27 23:51:32,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27089 to 7818. [2020-10-27 23:51:32,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7818 states. [2020-10-27 23:51:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7818 states to 7818 states and 11522 transitions. [2020-10-27 23:51:32,630 INFO L78 Accepts]: Start accepts. Automaton has 7818 states and 11522 transitions. Word has length 80 [2020-10-27 23:51:32,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:51:32,630 INFO L481 AbstractCegarLoop]: Abstraction has 7818 states and 11522 transitions. [2020-10-27 23:51:32,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 23:51:32,630 INFO L276 IsEmpty]: Start isEmpty. Operand 7818 states and 11522 transitions. [2020-10-27 23:51:32,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 23:51:32,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:51:32,635 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] [2020-10-27 23:51:32,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:51:32,636 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:51:32,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:51:32,636 INFO L82 PathProgramCache]: Analyzing trace with hash -2127914046, now seen corresponding path program 1 times [2020-10-27 23:51:32,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:51:32,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314991817] [2020-10-27 23:51:32,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:51:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:32,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:32,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:32,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:33,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:33,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:33,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:33,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:34,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:35,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:35,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:36,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:37,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:37,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:37,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:37,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 23:51:37,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:51:37,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 23:51:37,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:37,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:51:37,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:51:37,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 23:51:37,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:38,839 WARN L193 SmtUtils]: Spent 989.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 23:51:38,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:51:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:38,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:38,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:38,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:51:38,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:51:38,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:51:38,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:51:38,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:51:38,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:51:38,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:38,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:51:38,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314991817] [2020-10-27 23:51:38,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:51:38,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:51:38,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031618959] [2020-10-27 23:51:38,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:51:38,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:51:38,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:51:38,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:51:38,905 INFO L87 Difference]: Start difference. First operand 7818 states and 11522 transitions. Second operand 6 states. [2020-10-27 23:51:39,917 WARN L193 SmtUtils]: Spent 929.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-27 23:51:44,248 WARN L193 SmtUtils]: Spent 903.00 ms on a formula simplification that was a NOOP. DAG size: 354 [2020-10-27 23:51:45,538 WARN L193 SmtUtils]: Spent 858.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-27 23:51:50,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:51:50,041 INFO L93 Difference]: Finished difference Result 29959 states and 44847 transitions. [2020-10-27 23:51:50,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:51:50,042 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-27 23:51:50,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:51:50,085 INFO L225 Difference]: With dead ends: 29959 [2020-10-27 23:51:50,086 INFO L226 Difference]: Without dead ends: 27619 [2020-10-27 23:51:50,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:51:50,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27619 states. [2020-10-27 23:51:52,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27619 to 16188. [2020-10-27 23:51:52,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16188 states. [2020-10-27 23:51:52,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16188 states to 16188 states and 23927 transitions. [2020-10-27 23:51:52,090 INFO L78 Accepts]: Start accepts. Automaton has 16188 states and 23927 transitions. Word has length 80 [2020-10-27 23:51:52,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:51:52,090 INFO L481 AbstractCegarLoop]: Abstraction has 16188 states and 23927 transitions. [2020-10-27 23:51:52,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:51:52,090 INFO L276 IsEmpty]: Start isEmpty. Operand 16188 states and 23927 transitions. [2020-10-27 23:51:52,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 23:51:52,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:51:52,097 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] [2020-10-27 23:51:52,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:51:52,098 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:51:52,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:51:52,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1520227775, now seen corresponding path program 1 times [2020-10-27 23:51:52,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:51:52,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591297149] [2020-10-27 23:51:52,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:51:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:52,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:52,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:52,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:52,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:52,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:52,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:53,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:54,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:54,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:54,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:54,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:54,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:55,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:55,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:56,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:56,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:57,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:57,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:57,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 23:51:57,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 23:51:57,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:51:57,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:57,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 23:51:57,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:51:57,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 23:51:57,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:58,305 WARN L193 SmtUtils]: Spent 907.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 23:51:58,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:51:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:58,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:58,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:58,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:51:58,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:51:58,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:51:58,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:58,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:51:58,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:51:58,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:51:58,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:58,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:51:58,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591297149] [2020-10-27 23:51:58,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:51:58,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 23:51:58,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250138355] [2020-10-27 23:51:58,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 23:51:58,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:51:58,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 23:51:58,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:51:58,352 INFO L87 Difference]: Start difference. First operand 16188 states and 23927 transitions. Second operand 12 states.