/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/verifythis/tree_max.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 01:16:41,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 01:16:41,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 01:16:41,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 01:16:41,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 01:16:41,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 01:16:41,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 01:16:41,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 01:16:41,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 01:16:41,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 01:16:41,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 01:16:41,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 01:16:41,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 01:16:41,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 01:16:41,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 01:16:41,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 01:16:41,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 01:16:41,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 01:16:41,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 01:16:41,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 01:16:41,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 01:16:41,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 01:16:41,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 01:16:41,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 01:16:41,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 01:16:41,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 01:16:41,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 01:16:41,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 01:16:41,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 01:16:41,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 01:16:41,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 01:16:41,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 01:16:41,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 01:16:41,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 01:16:41,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 01:16:41,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 01:16:41,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 01:16:41,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 01:16:41,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 01:16:41,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 01:16:41,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 01:16:41,205 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 [2020-10-28 01:16:41,245 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 01:16:41,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 01:16:41,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 01:16:41,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 01:16:41,251 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 01:16:41,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 01:16:41,252 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 01:16:41,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 01:16:41,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 01:16:41,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 01:16:41,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 01:16:41,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 01:16:41,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 01:16:41,256 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 01:16:41,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 01:16:41,257 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 01:16:41,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 01:16:41,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 01:16:41,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 01:16:41,258 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 01:16:41,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 01:16:41,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 01:16:41,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 01:16:41,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 01:16:41,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 01:16:41,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 01:16:41,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 01:16:41,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 01:16:41,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 01:16:41,261 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 01:16:41,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 01:16:41,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 01:16:41,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 01:16:41,782 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 01:16:41,783 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 01:16:41,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_max.c [2020-10-28 01:16:41,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48431fb47/b679398902474f6b9ca7727e5a6a9625/FLAGb0319411d [2020-10-28 01:16:42,527 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 01:16:42,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_max.c [2020-10-28 01:16:42,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48431fb47/b679398902474f6b9ca7727e5a6a9625/FLAGb0319411d [2020-10-28 01:16:42,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48431fb47/b679398902474f6b9ca7727e5a6a9625 [2020-10-28 01:16:42,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 01:16:42,850 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 01:16:42,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 01:16:42,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 01:16:42,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 01:16:42,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:16:42" (1/1) ... [2020-10-28 01:16:42,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7997b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:16:42, skipping insertion in model container [2020-10-28 01:16:42,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:16:42" (1/1) ... [2020-10-28 01:16:42,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 01:16:42,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 01:16:43,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 01:16:43,079 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 01:16:43,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 01:16:43,125 INFO L208 MainTranslator]: Completed translation [2020-10-28 01:16:43,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:16:43 WrapperNode [2020-10-28 01:16:43,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 01:16:43,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 01:16:43,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 01:16:43,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 01:16:43,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:16:43" (1/1) ... [2020-10-28 01:16:43,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:16:43" (1/1) ... [2020-10-28 01:16:43,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:16:43" (1/1) ... [2020-10-28 01:16:43,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:16:43" (1/1) ... [2020-10-28 01:16:43,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:16:43" (1/1) ... [2020-10-28 01:16:43,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:16:43" (1/1) ... [2020-10-28 01:16:43,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:16:43" (1/1) ... [2020-10-28 01:16:43,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 01:16:43,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 01:16:43,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 01:16:43,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 01:16:43,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:16:43" (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 [2020-10-28 01:16:43,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 01:16:43,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 01:16:43,253 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 01:16:43,253 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 01:16:43,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 01:16:43,254 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-10-28 01:16:43,254 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-28 01:16:43,254 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 01:16:43,254 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-10-28 01:16:43,254 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 01:16:43,255 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 01:16:43,255 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 01:16:43,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 01:16:43,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 01:16:43,255 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 01:16:43,255 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 01:16:43,256 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 01:16:43,256 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 01:16:43,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 01:16:43,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 01:16:43,256 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-10-28 01:16:43,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 01:16:43,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 01:16:43,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 01:16:43,257 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-28 01:16:43,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 01:16:43,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 01:16:43,258 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 01:16:43,258 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-10-28 01:16:43,258 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 01:16:43,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 01:16:43,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 01:16:43,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 01:16:43,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 01:16:43,600 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 01:16:43,601 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 01:16:43,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:16:43 BoogieIcfgContainer [2020-10-28 01:16:43,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 01:16:43,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 01:16:43,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 01:16:43,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 01:16:43,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:16:42" (1/3) ... [2020-10-28 01:16:43,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b27319b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:16:43, skipping insertion in model container [2020-10-28 01:16:43,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:16:43" (2/3) ... [2020-10-28 01:16:43,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b27319b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:16:43, skipping insertion in model container [2020-10-28 01:16:43,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:16:43" (3/3) ... [2020-10-28 01:16:43,614 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_max.c [2020-10-28 01:16:43,629 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 01:16:43,634 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 01:16:43,652 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 01:16:43,685 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 01:16:43,685 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 01:16:43,686 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 01:16:43,686 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 01:16:43,686 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 01:16:43,686 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 01:16:43,687 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 01:16:43,687 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 01:16:43,709 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-28 01:16:43,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 01:16:43,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:16:43,717 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] [2020-10-28 01:16:43,718 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:16:43,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:16:43,725 INFO L82 PathProgramCache]: Analyzing trace with hash 900711335, now seen corresponding path program 1 times [2020-10-28 01:16:43,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:16:43,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353968310] [2020-10-28 01:16:43,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:16:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:44,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:44,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:45,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:45,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 01:16:45,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:16:45,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-10-28 01:16:45,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:45,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:16:45,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:16:45,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 01:16:45,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 01:16:45,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:16:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:45,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:45,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:45,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:45,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:45,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:16:45,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:45,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:45,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:45,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:45,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:45,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:16:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:45,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:45,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:45,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:45,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:45,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:16:45,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:45,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:45,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:45,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:45,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:45,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:16:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:45,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:45,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:45,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:45,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:45,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 01:16:45,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:45,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:16:45,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:45,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:16:45,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:16:45,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353968310] [2020-10-28 01:16:45,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:16:45,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 01:16:45,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565254778] [2020-10-28 01:16:45,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 01:16:45,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:16:45,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 01:16:45,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 01:16:45,377 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 9 states. [2020-10-28 01:16:46,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:16:46,287 INFO L93 Difference]: Finished difference Result 99 states and 130 transitions. [2020-10-28 01:16:46,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 01:16:46,290 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-28 01:16:46,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:16:46,302 INFO L225 Difference]: With dead ends: 99 [2020-10-28 01:16:46,302 INFO L226 Difference]: Without dead ends: 47 [2020-10-28 01:16:46,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-28 01:16:46,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-28 01:16:46,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-10-28 01:16:46,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-28 01:16:46,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2020-10-28 01:16:46,362 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 25 [2020-10-28 01:16:46,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:16:46,363 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2020-10-28 01:16:46,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 01:16:46,363 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2020-10-28 01:16:46,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 01:16:46,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:16:46,367 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:16:46,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 01:16:46,367 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:16:46,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:16:46,368 INFO L82 PathProgramCache]: Analyzing trace with hash 398438091, now seen corresponding path program 1 times [2020-10-28 01:16:46,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:16:46,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176415485] [2020-10-28 01:16:46,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:16:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:46,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:46,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:46,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:47,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:47,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:47,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 01:16:47,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 01:16:47,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1363 [2020-10-28 01:16:47,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:47,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 01:16:47,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:16:47,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 01:16:47,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:16:47,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:16:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:47,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:47,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:47,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:47,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:47,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 01:16:47,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:47,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:47,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:47,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:47,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:47,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:16:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:47,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:47,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:47,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:47,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:47,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:16:47,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:47,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:47,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:16:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:47,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:48,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:48,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 01:16:48,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:48,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 01:16:48,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:48,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:16:48,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:48,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 01:16:48,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:48,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:16:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:48,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:48,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:48,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:48,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:48,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:16:48,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:48,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:48,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:48,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:16:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:48,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:48,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:48,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:48,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:48,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:16:48,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:48,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:48,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:48,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:48,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:48,104 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 01:16:48,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176415485] [2020-10-28 01:16:48,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:16:48,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 01:16:48,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402754072] [2020-10-28 01:16:48,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 01:16:48,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:16:48,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 01:16:48,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-28 01:16:48,109 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand 14 states. [2020-10-28 01:16:49,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:16:49,340 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2020-10-28 01:16:49,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 01:16:49,342 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-10-28 01:16:49,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:16:49,345 INFO L225 Difference]: With dead ends: 61 [2020-10-28 01:16:49,345 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 01:16:49,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2020-10-28 01:16:49,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 01:16:49,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2020-10-28 01:16:49,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 01:16:49,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-10-28 01:16:49,376 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 38 [2020-10-28 01:16:49,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:16:49,377 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-10-28 01:16:49,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 01:16:49,377 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-10-28 01:16:49,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 01:16:49,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:16:49,383 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:16:49,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 01:16:49,383 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:16:49,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:16:49,384 INFO L82 PathProgramCache]: Analyzing trace with hash 640582014, now seen corresponding path program 1 times [2020-10-28 01:16:49,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:16:49,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739896556] [2020-10-28 01:16:49,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:16:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:49,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:49,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:49,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:51,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:51,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 01:16:51,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:16:51,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2331 [2020-10-28 01:16:51,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:51,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 01:16:51,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:16:51,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 01:16:51,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:51,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:16:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:51,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:51,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:51,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:51,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:51,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:16:51,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:51,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:51,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:51,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:51,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:51,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:16:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:51,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:51,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:51,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:51,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:51,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:16:51,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:51,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:51,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:51,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:51,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:51,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:16:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:51,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:51,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:51,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 01:16:51,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:51,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 01:16:51,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:51,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:16:51,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:51,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 01:16:51,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:52,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:16:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:52,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:52,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:52,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:52,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:52,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:16:52,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:16:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:16:52,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:52,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:16:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:52,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:52,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:52,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:52,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:52,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:16:52,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:52,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:52,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:52,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:52,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:52,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 01:16:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:52,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:52,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:52,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:52,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:52,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:16:52,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:52,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:52,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:52,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:52,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 01:16:52,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739896556] [2020-10-28 01:16:52,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:16:52,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 01:16:52,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627747799] [2020-10-28 01:16:52,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 01:16:52,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:16:52,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 01:16:52,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-28 01:16:52,170 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 14 states. [2020-10-28 01:16:53,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:16:53,619 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2020-10-28 01:16:53,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 01:16:53,619 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-10-28 01:16:53,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:16:53,623 INFO L225 Difference]: With dead ends: 86 [2020-10-28 01:16:53,623 INFO L226 Difference]: Without dead ends: 69 [2020-10-28 01:16:53,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2020-10-28 01:16:53,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-28 01:16:53,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-10-28 01:16:53,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-28 01:16:53,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 83 transitions. [2020-10-28 01:16:53,659 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 83 transitions. Word has length 48 [2020-10-28 01:16:53,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:16:53,660 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 83 transitions. [2020-10-28 01:16:53,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 01:16:53,660 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 83 transitions. [2020-10-28 01:16:53,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 01:16:53,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:16:53,663 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:16:53,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 01:16:53,665 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:16:53,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:16:53,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1191352128, now seen corresponding path program 1 times [2020-10-28 01:16:53,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:16:53,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812312662] [2020-10-28 01:16:53,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:16:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:53,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:53,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:53,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:55,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:55,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 01:16:55,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:16:55,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2167 [2020-10-28 01:16:55,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 01:16:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:16:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 01:16:55,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 01:16:56,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:16:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:56,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:56,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:56,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:56,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:56,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:16:56,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:56,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:56,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:56,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:56,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:56,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:16:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:56,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:56,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:56,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:56,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:56,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:16:56,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:56,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:56,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:56,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:56,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:56,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:16:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:56,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:56,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:56,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 01:16:56,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:56,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 01:16:56,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:56,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:16:56,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:56,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 01:16:56,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:16:56,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:16:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:56,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:56,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:56,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:56,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:56,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:16:56,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:56,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:56,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:56,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:56,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:56,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:16:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:56,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:56,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:56,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:56,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:56,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:16:56,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:56,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:16:56,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:56,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:16:56,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:56,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 01:16:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:56,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:56,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:56,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:56,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:56,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:16:56,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:56,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:56,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:56,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:56,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:56,369 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 01:16:56,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812312662] [2020-10-28 01:16:56,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:16:56,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 01:16:56,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467546446] [2020-10-28 01:16:56,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 01:16:56,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:16:56,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 01:16:56,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-28 01:16:56,374 INFO L87 Difference]: Start difference. First operand 65 states and 83 transitions. Second operand 14 states. [2020-10-28 01:16:57,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:16:57,751 INFO L93 Difference]: Finished difference Result 110 states and 144 transitions. [2020-10-28 01:16:57,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 01:16:57,752 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-10-28 01:16:57,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:16:57,758 INFO L225 Difference]: With dead ends: 110 [2020-10-28 01:16:57,758 INFO L226 Difference]: Without dead ends: 86 [2020-10-28 01:16:57,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2020-10-28 01:16:57,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-28 01:16:57,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2020-10-28 01:16:57,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-28 01:16:57,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 110 transitions. [2020-10-28 01:16:57,789 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 110 transitions. Word has length 48 [2020-10-28 01:16:57,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:16:57,789 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 110 transitions. [2020-10-28 01:16:57,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 01:16:57,789 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 110 transitions. [2020-10-28 01:16:57,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 01:16:57,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:16:57,794 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:16:57,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 01:16:57,795 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:16:57,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:16:57,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1394930946, now seen corresponding path program 2 times [2020-10-28 01:16:57,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:16:57,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316680077] [2020-10-28 01:16:57,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:16:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:57,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:57,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:58,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:58,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:58,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:02,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:02,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 01:17:02,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 01:17:02,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 01:17:02,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:02,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 01:17:02,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:17:02,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 01:17:02,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:03,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:17:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:03,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:03,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:03,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:03,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:03,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:17:03,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:03,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:03,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:03,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:03,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:03,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:17:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:03,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:03,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:03,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:03,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:03,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:03,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:03,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:03,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:03,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:03,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:03,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:17:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:03,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:03,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:03,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:03,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 01:17:03,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:17:03,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-28 01:17:03,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 01:17:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 01:17:03,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:03,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:17:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:03,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:03,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:03,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:03,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:03,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:17:03,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:03,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:17:03,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:03,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:03,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:03,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:17:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:03,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:03,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:03,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 01:17:03,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:03,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 01:17:03,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:03,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:17:03,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:03,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 01:17:03,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:03,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:17:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:03,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:03,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:03,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:03,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:03,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:03,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:03,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:03,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:17:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:03,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:03,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:03,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:03,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:03,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:03,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:03,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:03,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:03,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:03,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:03,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 01:17:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:03,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:03,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:03,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:03,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:03,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:03,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:03,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:03,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:03,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:03,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:03,884 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 11 proven. 23 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-28 01:17:03,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316680077] [2020-10-28 01:17:03,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:17:03,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 01:17:03,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337864737] [2020-10-28 01:17:03,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 01:17:03,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:17:03,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 01:17:03,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-10-28 01:17:03,887 INFO L87 Difference]: Start difference. First operand 82 states and 110 transitions. Second operand 23 states. [2020-10-28 01:17:06,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:17:06,826 INFO L93 Difference]: Finished difference Result 109 states and 144 transitions. [2020-10-28 01:17:06,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 01:17:06,828 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 61 [2020-10-28 01:17:06,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:17:06,830 INFO L225 Difference]: With dead ends: 109 [2020-10-28 01:17:06,831 INFO L226 Difference]: Without dead ends: 106 [2020-10-28 01:17:06,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=233, Invalid=1747, Unknown=0, NotChecked=0, Total=1980 [2020-10-28 01:17:06,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-28 01:17:06,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 99. [2020-10-28 01:17:06,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 01:17:06,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 131 transitions. [2020-10-28 01:17:06,868 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 131 transitions. Word has length 61 [2020-10-28 01:17:06,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:17:06,869 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 131 transitions. [2020-10-28 01:17:06,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 01:17:06,869 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 131 transitions. [2020-10-28 01:17:06,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 01:17:06,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:17:06,871 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:17:06,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 01:17:06,872 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:17:06,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:17:06,872 INFO L82 PathProgramCache]: Analyzing trace with hash 527018462, now seen corresponding path program 1 times [2020-10-28 01:17:06,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:17:06,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602811359] [2020-10-28 01:17:06,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:17:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:06,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:06,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:07,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:08,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:08,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:09,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:11,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:11,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 01:17:11,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 01:17:11,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 01:17:11,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:11,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 01:17:11,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 01:17:11,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 01:17:11,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:11,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:17:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:11,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:11,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:11,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:11,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:11,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:17:11,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:11,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:11,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:11,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:11,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:17:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:12,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:12,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:12,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:12,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:12,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:12,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:17:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 01:17:12,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:12,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 01:17:12,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 01:17:12,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 01:17:12,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 01:17:12,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:17:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:12,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:12,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:12,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:12,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:17:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 01:17:12,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:12,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 01:17:12,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:17:12,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:12,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 01:17:12,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:17:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:12,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:12,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:17:12,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 01:17:12,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:12,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 01:17:12,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:17:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:12,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:12,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:17:12,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:12,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:12,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:12,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 01:17:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:12,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:12,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:17:12,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:12,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 01:17:12,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:12,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,340 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-28 01:17:12,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602811359] [2020-10-28 01:17:12,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:17:12,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 01:17:12,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432882068] [2020-10-28 01:17:12,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 01:17:12,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:17:12,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 01:17:12,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-28 01:17:12,345 INFO L87 Difference]: Start difference. First operand 99 states and 131 transitions. Second operand 12 states. [2020-10-28 01:17:13,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:17:13,517 INFO L93 Difference]: Finished difference Result 222 states and 360 transitions. [2020-10-28 01:17:13,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 01:17:13,519 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-10-28 01:17:13,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:17:13,522 INFO L225 Difference]: With dead ends: 222 [2020-10-28 01:17:13,522 INFO L226 Difference]: Without dead ends: 139 [2020-10-28 01:17:13,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2020-10-28 01:17:13,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-28 01:17:13,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 119. [2020-10-28 01:17:13,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-28 01:17:13,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 171 transitions. [2020-10-28 01:17:13,579 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 171 transitions. Word has length 62 [2020-10-28 01:17:13,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:17:13,580 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 171 transitions. [2020-10-28 01:17:13,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 01:17:13,580 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 171 transitions. [2020-10-28 01:17:13,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 01:17:13,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:17:13,584 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:17:13,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 01:17:13,585 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:17:13,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:17:13,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1511037827, now seen corresponding path program 1 times [2020-10-28 01:17:13,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:17:13,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946585958] [2020-10-28 01:17:13,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:17:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:13,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:13,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:14,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:14,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:14,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:15,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:16,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:16,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:18,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:18,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 01:17:18,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 01:17:18,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 01:17:18,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:18,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 01:17:18,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:17:18,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 01:17:18,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:18,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:17:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:18,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:18,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:18,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:18,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:18,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:17:18,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:18,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:18,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:18,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:18,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:18,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:17:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:18,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:18,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:18,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:18,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:18,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:17:18,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:18,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:18,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:18,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:18,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:18,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:17:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:18,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:18,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:19,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:19,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:19,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:19,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:19,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 01:17:19,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 01:17:19,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 686 [2020-10-28 01:17:19,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:19,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 01:17:19,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:19,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 01:17:19,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:19,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:17:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:19,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:19,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:19,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:19,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:19,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:17:19,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:19,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:17:19,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:19,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:19,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:19,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:17:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:19,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:20,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:20,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 01:17:20,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:20,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 01:17:20,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:20,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:17:20,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:20,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 01:17:20,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:20,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:17:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:20,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:20,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:20,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:20,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:20,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:20,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:20,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:20,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:20,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:20,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:20,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:17:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:20,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:20,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:20,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:20,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:20,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:17:20,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:20,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:20,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:20,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:20,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:20,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 01:17:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:20,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:20,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:20,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:20,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:20,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:17:20,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:20,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:17:20,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:20,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:17:20,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:20,227 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-28 01:17:20,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946585958] [2020-10-28 01:17:20,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:17:20,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 01:17:20,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394731652] [2020-10-28 01:17:20,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 01:17:20,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:17:20,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 01:17:20,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2020-10-28 01:17:20,230 INFO L87 Difference]: Start difference. First operand 119 states and 171 transitions. Second operand 26 states. [2020-10-28 01:17:21,133 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-28 01:17:21,562 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-28 01:17:21,760 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-28 01:17:21,941 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-28 01:17:22,184 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-28 01:17:24,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:17:24,323 INFO L93 Difference]: Finished difference Result 144 states and 205 transitions. [2020-10-28 01:17:24,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 01:17:24,324 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 62 [2020-10-28 01:17:24,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:17:24,328 INFO L225 Difference]: With dead ends: 144 [2020-10-28 01:17:24,329 INFO L226 Difference]: Without dead ends: 141 [2020-10-28 01:17:24,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=282, Invalid=2168, Unknown=0, NotChecked=0, Total=2450 [2020-10-28 01:17:24,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-28 01:17:24,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 134. [2020-10-28 01:17:24,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-28 01:17:24,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 192 transitions. [2020-10-28 01:17:24,357 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 192 transitions. Word has length 62 [2020-10-28 01:17:24,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:17:24,357 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 192 transitions. [2020-10-28 01:17:24,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 01:17:24,358 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 192 transitions. [2020-10-28 01:17:24,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 01:17:24,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:17:24,360 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:17:24,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 01:17:24,360 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:17:24,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:17:24,361 INFO L82 PathProgramCache]: Analyzing trace with hash -814251235, now seen corresponding path program 1 times [2020-10-28 01:17:24,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:17:24,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131590503] [2020-10-28 01:17:24,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:17:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:24,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:24,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:24,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:26,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:26,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 01:17:26,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:17:26,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2051 [2020-10-28 01:17:26,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 01:17:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:17:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 01:17:26,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:26,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:17:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:26,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:26,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:26,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:26,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:26,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:17:26,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:26,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:26,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:26,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:26,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:26,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:17:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:26,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:26,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:26,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:26,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:26,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:26,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:26,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:26,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:26,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:26,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:26,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:17:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:26,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:26,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:26,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 01:17:26,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:26,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 01:17:26,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:26,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 01:17:26,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:26,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 01:17:26,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:26,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:17:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:26,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:26,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:26,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:26,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:26,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:26,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:26,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:26,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:26,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:26,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:26,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:17:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:26,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:27,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:27,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 01:17:27,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:27,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 01:17:27,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:17:27,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:27,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 01:17:27,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:27,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:17:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:27,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:27,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:27,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:27,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:27,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:27,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:27,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:27,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:27,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:27,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:27,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:17:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:27,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:27,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:27,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:27,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:27,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:27,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:27,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:27,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:27,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:27,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:27,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 01:17:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:27,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:27,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:27,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:27,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:27,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:27,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:27,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:27,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:27,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:27,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:27,124 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-28 01:17:27,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131590503] [2020-10-28 01:17:27,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:17:27,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 01:17:27,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278147370] [2020-10-28 01:17:27,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 01:17:27,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:17:27,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 01:17:27,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-28 01:17:27,128 INFO L87 Difference]: Start difference. First operand 134 states and 192 transitions. Second operand 21 states. [2020-10-28 01:17:30,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:17:30,106 INFO L93 Difference]: Finished difference Result 193 states and 298 transitions. [2020-10-28 01:17:30,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 01:17:30,106 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 63 [2020-10-28 01:17:30,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:17:30,111 INFO L225 Difference]: With dead ends: 193 [2020-10-28 01:17:30,111 INFO L226 Difference]: Without dead ends: 190 [2020-10-28 01:17:30,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=205, Invalid=1435, Unknown=0, NotChecked=0, Total=1640 [2020-10-28 01:17:30,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-28 01:17:30,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 157. [2020-10-28 01:17:30,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-28 01:17:30,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 238 transitions. [2020-10-28 01:17:30,147 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 238 transitions. Word has length 63 [2020-10-28 01:17:30,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:17:30,148 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 238 transitions. [2020-10-28 01:17:30,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 01:17:30,148 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 238 transitions. [2020-10-28 01:17:30,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 01:17:30,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:17:30,151 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:17:30,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 01:17:30,151 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:17:30,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:17:30,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1550561898, now seen corresponding path program 2 times [2020-10-28 01:17:30,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:17:30,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671550156] [2020-10-28 01:17:30,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:17:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:30,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:30,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:30,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:30,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:34,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:34,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 01:17:34,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 01:17:34,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3880 [2020-10-28 01:17:34,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:34,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 01:17:34,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:17:34,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 01:17:34,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:34,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:17:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:34,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:34,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:34,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:34,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:34,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:17:34,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:34,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:34,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:17:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:34,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:34,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:34,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:34,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:34,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:17:34,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:34,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:34,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:34,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:34,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:34,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:17:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:34,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:34,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:34,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 01:17:34,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:34,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 01:17:34,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:34,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 01:17:34,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:34,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 01:17:34,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:34,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:17:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:34,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:34,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:34,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 01:17:34,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:34,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 01:17:34,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:34,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 01:17:34,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:34,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 01:17:34,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:34,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:17:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:34,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:34,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:34,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:34,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:34,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:17:34,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:34,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:17:34,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:34,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:34,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:34,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:17:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:34,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:34,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:34,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:34,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:34,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:17:34,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:34,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:34,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:34,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:34,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:34,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 01:17:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:34,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:34,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:34,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:34,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:34,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:34,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:34,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:34,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:34,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:34,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:34,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 01:17:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:34,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:34,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:34,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:34,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:34,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:34,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:34,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:34,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:34,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:34,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-28 01:17:34,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671550156] [2020-10-28 01:17:34,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:17:34,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 01:17:34,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706721779] [2020-10-28 01:17:34,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 01:17:34,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:17:34,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 01:17:34,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-28 01:17:34,757 INFO L87 Difference]: Start difference. First operand 157 states and 238 transitions. Second operand 22 states. [2020-10-28 01:17:37,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:17:37,901 INFO L93 Difference]: Finished difference Result 224 states and 363 transitions. [2020-10-28 01:17:37,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 01:17:37,903 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 61 [2020-10-28 01:17:37,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:17:37,908 INFO L225 Difference]: With dead ends: 224 [2020-10-28 01:17:37,908 INFO L226 Difference]: Without dead ends: 221 [2020-10-28 01:17:37,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=219, Invalid=1587, Unknown=0, NotChecked=0, Total=1806 [2020-10-28 01:17:37,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-28 01:17:37,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 205. [2020-10-28 01:17:37,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-28 01:17:37,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 341 transitions. [2020-10-28 01:17:37,962 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 341 transitions. Word has length 61 [2020-10-28 01:17:37,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:17:37,965 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 341 transitions. [2020-10-28 01:17:37,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 01:17:37,965 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 341 transitions. [2020-10-28 01:17:37,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 01:17:37,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:17:37,970 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:17:37,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 01:17:37,971 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:17:37,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:17:37,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1522779037, now seen corresponding path program 1 times [2020-10-28 01:17:37,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:17:37,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770833416] [2020-10-28 01:17:37,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:17:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:37,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:38,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:38,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:38,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:38,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 01:17:38,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:17:38,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 956 [2020-10-28 01:17:38,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:38,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 01:17:38,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:17:38,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 01:17:38,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:39,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:17:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:39,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:39,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:39,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:39,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:39,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:39,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:39,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:39,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:39,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:39,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:39,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:17:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:39,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:39,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:39,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:39,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:39,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:39,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:39,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:39,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:39,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:39,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:17:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:39,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:39,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:39,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 01:17:39,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:39,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 01:17:39,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:39,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 01:17:39,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:39,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 01:17:39,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:39,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:17:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:39,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:39,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:39,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 01:17:39,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:39,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 01:17:39,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:39,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:17:39,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:39,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 01:17:39,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:39,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:17:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:39,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:39,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:39,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:39,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:39,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:39,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:39,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:39,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:39,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:39,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:39,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:17:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:39,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:39,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:39,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:39,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:39,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:39,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:39,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:39,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:39,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:39,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:39,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 01:17:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:39,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:39,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:39,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:39,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:39,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:39,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:39,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:39,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:39,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:39,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:39,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 01:17:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:39,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:39,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:39,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:39,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:39,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:39,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:39,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:39,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:39,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:39,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:39,613 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-28 01:17:39,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770833416] [2020-10-28 01:17:39,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:17:39,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 01:17:39,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633327699] [2020-10-28 01:17:39,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 01:17:39,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:17:39,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 01:17:39,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-28 01:17:39,616 INFO L87 Difference]: Start difference. First operand 205 states and 341 transitions. Second operand 21 states. [2020-10-28 01:17:42,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:17:42,409 INFO L93 Difference]: Finished difference Result 261 states and 406 transitions. [2020-10-28 01:17:42,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 01:17:42,409 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 62 [2020-10-28 01:17:42,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:17:42,412 INFO L225 Difference]: With dead ends: 261 [2020-10-28 01:17:42,412 INFO L226 Difference]: Without dead ends: 258 [2020-10-28 01:17:42,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=208, Invalid=1432, Unknown=0, NotChecked=0, Total=1640 [2020-10-28 01:17:42,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-28 01:17:42,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 190. [2020-10-28 01:17:42,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-28 01:17:42,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 304 transitions. [2020-10-28 01:17:42,450 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 304 transitions. Word has length 62 [2020-10-28 01:17:42,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:17:42,451 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 304 transitions. [2020-10-28 01:17:42,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 01:17:42,452 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 304 transitions. [2020-10-28 01:17:42,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 01:17:42,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:17:42,455 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:17:42,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 01:17:42,455 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:17:42,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:17:42,456 INFO L82 PathProgramCache]: Analyzing trace with hash 131577595, now seen corresponding path program 2 times [2020-10-28 01:17:42,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:17:42,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172983474] [2020-10-28 01:17:42,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:17:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:42,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:42,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:42,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:44,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:44,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 01:17:44,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:17:44,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1564 [2020-10-28 01:17:44,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 01:17:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:17:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 01:17:44,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:44,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:17:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:44,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:44,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:44,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:44,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:44,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:17:44,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:44,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:44,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:17:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:44,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:44,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:44,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:44,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:44,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:44,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:44,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:44,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:44,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:44,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:44,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:17:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:44,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:44,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:44,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 01:17:44,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:44,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 01:17:44,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:44,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 01:17:44,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:44,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 01:17:44,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:44,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:17:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:44,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:44,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:44,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:44,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:44,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:17:44,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:44,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:44,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:44,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:44,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:44,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:17:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:44,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:44,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:44,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 01:17:44,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:44,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 01:17:44,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:44,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:17:44,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:44,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 01:17:44,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:44,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:17:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:44,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:44,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:44,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:44,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:44,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:44,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:44,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:44,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:44,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:44,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:44,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:17:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:44,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:44,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:44,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 01:17:44,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:44,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 01:17:44,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 01:17:44,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:44,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:17:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:44,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:44,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:44,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:44,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:44,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:44,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:44,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:44,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:44,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:44,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:44,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:17:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:44,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:44,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:44,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:44,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:44,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:44,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:44,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:44,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:44,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:44,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:44,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 01:17:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:44,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:44,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:44,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:44,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:44,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:17:44,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:44,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:44,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:44,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:44,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 29 proven. 26 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-28 01:17:44,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172983474] [2020-10-28 01:17:44,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:17:44,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 01:17:44,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745026627] [2020-10-28 01:17:44,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 01:17:44,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:17:44,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 01:17:44,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-28 01:17:44,818 INFO L87 Difference]: Start difference. First operand 190 states and 304 transitions. Second operand 21 states. [2020-10-28 01:17:47,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:17:47,709 INFO L93 Difference]: Finished difference Result 223 states and 342 transitions. [2020-10-28 01:17:47,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 01:17:47,714 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 77 [2020-10-28 01:17:47,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:17:47,717 INFO L225 Difference]: With dead ends: 223 [2020-10-28 01:17:47,718 INFO L226 Difference]: Without dead ends: 220 [2020-10-28 01:17:47,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=208, Invalid=1432, Unknown=0, NotChecked=0, Total=1640 [2020-10-28 01:17:47,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-28 01:17:47,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 166. [2020-10-28 01:17:47,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-28 01:17:47,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 257 transitions. [2020-10-28 01:17:47,741 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 257 transitions. Word has length 77 [2020-10-28 01:17:47,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:17:47,741 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 257 transitions. [2020-10-28 01:17:47,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 01:17:47,741 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 257 transitions. [2020-10-28 01:17:47,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 01:17:47,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:17:47,744 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:17:47,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 01:17:47,744 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:17:47,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:17:47,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1913107334, now seen corresponding path program 1 times [2020-10-28 01:17:47,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:17:47,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18441341] [2020-10-28 01:17:47,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:17:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:47,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:47,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:48,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:48,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:48,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:50,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:50,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 01:17:50,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 01:17:50,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3138 [2020-10-28 01:17:50,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 01:17:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:17:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 01:17:50,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:51,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:17:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:51,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:51,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:51,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:51,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:51,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:17:51,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:51,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:51,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:51,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:51,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:51,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:17:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:51,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:51,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:51,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:51,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:51,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:51,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:51,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:51,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:17:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:51,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:51,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:51,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:51,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 01:17:51,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:17:51,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-28 01:17:51,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:51,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 01:17:51,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:51,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 01:17:51,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:51,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:17:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:51,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:51,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:51,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 01:17:51,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:51,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 01:17:51,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:51,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:17:51,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:51,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 01:17:51,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:51,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:17:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:51,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:51,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:51,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:51,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:51,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:51,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:51,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:51,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:51,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:51,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:51,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:17:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:51,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:51,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:51,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:51,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:51,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:51,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:51,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:51,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 01:17:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:51,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:51,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:51,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:51,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:51,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:17:51,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:51,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:51,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:51,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:51,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:51,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 01:17:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:51,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:51,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:51,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:51,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:51,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:17:51,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:51,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:17:51,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:51,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:17:51,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:51,945 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-28 01:17:51,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18441341] [2020-10-28 01:17:51,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:17:51,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 01:17:51,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346038890] [2020-10-28 01:17:51,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 01:17:51,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:17:51,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 01:17:51,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2020-10-28 01:17:51,948 INFO L87 Difference]: Start difference. First operand 166 states and 257 transitions. Second operand 24 states. [2020-10-28 01:17:54,039 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-28 01:17:54,241 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-10-28 01:17:54,778 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-28 01:17:56,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:17:56,031 INFO L93 Difference]: Finished difference Result 202 states and 310 transitions. [2020-10-28 01:17:56,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 01:17:56,032 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 63 [2020-10-28 01:17:56,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:17:56,036 INFO L225 Difference]: With dead ends: 202 [2020-10-28 01:17:56,037 INFO L226 Difference]: Without dead ends: 199 [2020-10-28 01:17:56,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=279, Invalid=1977, Unknown=0, NotChecked=0, Total=2256 [2020-10-28 01:17:56,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-28 01:17:56,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 169. [2020-10-28 01:17:56,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-28 01:17:56,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 261 transitions. [2020-10-28 01:17:56,061 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 261 transitions. Word has length 63 [2020-10-28 01:17:56,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:17:56,061 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 261 transitions. [2020-10-28 01:17:56,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 01:17:56,062 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 261 transitions. [2020-10-28 01:17:56,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 01:17:56,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:17:56,064 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:17:56,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 01:17:56,064 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:17:56,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:17:56,065 INFO L82 PathProgramCache]: Analyzing trace with hash 794196465, now seen corresponding path program 1 times [2020-10-28 01:17:56,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:17:56,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920643695] [2020-10-28 01:17:56,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:17:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:56,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:56,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:56,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:57,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:57,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 01:17:57,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:17:57,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1235 [2020-10-28 01:17:57,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 01:17:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:17:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 01:17:57,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:57,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:17:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:57,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:57,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:57,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:57,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:57,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:17:57,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:57,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:57,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:57,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:57,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:57,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:17:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:57,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:57,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:57,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:57,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:57,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:57,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:57,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:57,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:57,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:57,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:57,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:17:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:57,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:57,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:57,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 01:17:57,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:57,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 01:17:57,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 01:17:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 01:17:57,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:57,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:17:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:57,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:57,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:57,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:57,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:57,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:17:57,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:57,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:57,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:57,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:57,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:57,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:17:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:57,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:57,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:57,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 01:17:57,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:57,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 01:17:57,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:57,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 01:17:57,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:57,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 01:17:57,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:58,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:17:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:58,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:58,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:58,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:58,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:58,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:17:58,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:58,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:17:58,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:58,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:17:58,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:58,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:17:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:58,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:58,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:58,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:58,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:58,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:17:58,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:58,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:58,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:58,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:58,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:17:58,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 01:17:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:58,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:58,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:58,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:58,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:58,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:17:58,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:58,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:58,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:58,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:58,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:58,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 01:17:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:58,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:58,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:58,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:58,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:58,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:58,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:58,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:58,297 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 01:17:58,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920643695] [2020-10-28 01:17:58,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:17:58,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 01:17:58,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237252656] [2020-10-28 01:17:58,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 01:17:58,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:17:58,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 01:17:58,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-28 01:17:58,307 INFO L87 Difference]: Start difference. First operand 169 states and 261 transitions. Second operand 20 states. [2020-10-28 01:18:01,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:18:01,428 INFO L93 Difference]: Finished difference Result 277 states and 430 transitions. [2020-10-28 01:18:01,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 01:18:01,429 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 71 [2020-10-28 01:18:01,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:18:01,432 INFO L225 Difference]: With dead ends: 277 [2020-10-28 01:18:01,433 INFO L226 Difference]: Without dead ends: 260 [2020-10-28 01:18:01,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=228, Invalid=1412, Unknown=0, NotChecked=0, Total=1640 [2020-10-28 01:18:01,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-28 01:18:01,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 254. [2020-10-28 01:18:01,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-28 01:18:01,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 403 transitions. [2020-10-28 01:18:01,467 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 403 transitions. Word has length 71 [2020-10-28 01:18:01,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:18:01,467 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 403 transitions. [2020-10-28 01:18:01,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 01:18:01,467 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 403 transitions. [2020-10-28 01:18:01,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 01:18:01,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:18:01,470 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:18:01,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 01:18:01,471 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:18:01,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:18:01,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1344966579, now seen corresponding path program 3 times [2020-10-28 01:18:01,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:18:01,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372758024] [2020-10-28 01:18:01,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:18:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:01,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:01,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:01,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:02,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:02,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 01:18:02,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:18:02,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1288 [2020-10-28 01:18:02,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:02,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 01:18:02,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:18:02,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 01:18:02,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:02,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:18:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:02,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:02,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:02,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:02,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:02,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:18:02,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:02,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:02,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:02,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:02,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:03,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:18:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:03,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:03,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:03,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:03,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:03,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:03,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:03,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:03,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:03,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:03,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:03,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:18:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:03,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:03,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:03,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 01:18:03,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:03,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 01:18:03,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:03,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 01:18:03,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:03,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 01:18:03,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:03,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:03,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:03,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:03,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:03,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:03,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:18:03,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:03,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:03,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:03,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:03,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:03,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:18:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:03,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:03,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:03,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 01:18:03,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:03,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 01:18:03,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:03,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 01:18:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 01:18:03,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:03,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:03,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:03,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:03,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:03,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:03,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:03,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:03,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:03,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:03,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:03,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:03,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:18:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:03,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:03,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:03,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:03,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:03,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:18:03,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:03,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:18:03,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:03,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:18:03,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:03,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 01:18:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:03,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:03,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:03,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:03,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:03,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:03,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:03,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:03,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:03,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:03,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:03,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 01:18:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:03,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:03,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:03,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:03,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:03,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:03,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:03,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 21 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-28 01:18:03,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372758024] [2020-10-28 01:18:03,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:18:03,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 01:18:03,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98434408] [2020-10-28 01:18:03,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 01:18:03,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:18:03,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 01:18:03,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-28 01:18:03,488 INFO L87 Difference]: Start difference. First operand 254 states and 403 transitions. Second operand 19 states. [2020-10-28 01:18:05,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:18:05,992 INFO L93 Difference]: Finished difference Result 447 states and 714 transitions. [2020-10-28 01:18:05,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 01:18:05,992 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 71 [2020-10-28 01:18:05,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:18:05,999 INFO L225 Difference]: With dead ends: 447 [2020-10-28 01:18:05,999 INFO L226 Difference]: Without dead ends: 406 [2020-10-28 01:18:06,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=176, Invalid=1084, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 01:18:06,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-10-28 01:18:06,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 391. [2020-10-28 01:18:06,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-28 01:18:06,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 640 transitions. [2020-10-28 01:18:06,051 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 640 transitions. Word has length 71 [2020-10-28 01:18:06,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:18:06,051 INFO L481 AbstractCegarLoop]: Abstraction has 391 states and 640 transitions. [2020-10-28 01:18:06,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 01:18:06,052 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 640 transitions. [2020-10-28 01:18:06,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 01:18:06,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:18:06,056 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 6, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:18:06,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 01:18:06,057 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:18:06,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:18:06,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1254380595, now seen corresponding path program 2 times [2020-10-28 01:18:06,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:18:06,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513768161] [2020-10-28 01:18:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:18:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:06,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:06,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:06,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:06,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:07,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:09,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:09,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:10,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:10,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:11,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:11,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 01:18:11,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 01:18:11,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 01:18:11,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:11,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 01:18:11,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:18:11,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 01:18:11,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:11,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:18:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:11,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:11,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:11,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:11,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:11,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:18:11,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:11,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:11,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:11,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:11,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:11,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:18:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:11,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:11,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:11,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:11,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:11,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:18:11,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:11,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:11,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:18:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:11,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:11,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:11,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:11,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:12,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:12,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 01:18:12,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 01:18:12,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1351 [2020-10-28 01:18:12,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 01:18:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 01:18:12,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:12,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:12,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:12,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:12,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 01:18:12,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:12,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:18:12,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:12,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:12,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:12,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 01:18:12,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:12,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:12,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:12,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:12,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:12,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:12,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:12,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:12,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:13,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:13,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:18:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:13,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:13,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:13,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:13,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:13,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:13,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:13,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:13,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:13,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:13,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:13,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 01:18:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:13,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:13,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:13,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 01:18:13,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:13,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 01:18:13,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:13,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 01:18:13,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:13,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 01:18:13,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:13,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:13,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:13,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:13,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 01:18:13,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:13,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 01:18:13,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:13,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:18:13,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:13,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 01:18:13,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:13,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:13,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:13,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:13,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:13,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:13,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:18:13,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 01:18:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 01:18:13,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:13,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:18:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:13,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:13,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:13,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 01:18:13,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:13,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 01:18:13,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:13,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 01:18:13,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:18:13,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:13,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:13,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:13,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:13,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:13,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:13,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:13,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:13,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:18:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:13,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:13,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:13,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:13,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:13,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:13,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:13,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:13,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:13,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:13,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:13,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 01:18:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:13,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:13,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:13,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:13,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:13,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:13,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:13,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:13,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:13,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:13,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:13,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 01:18:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:13,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:13,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:13,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:13,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:13,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:13,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:13,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:13,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:13,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:13,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 75 proven. 59 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-28 01:18:13,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513768161] [2020-10-28 01:18:13,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:18:13,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-28 01:18:13,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644080043] [2020-10-28 01:18:13,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-28 01:18:13,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:18:13,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-28 01:18:13,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=647, Unknown=0, NotChecked=0, Total=702 [2020-10-28 01:18:13,637 INFO L87 Difference]: Start difference. First operand 391 states and 640 transitions. Second operand 27 states. [2020-10-28 01:18:15,577 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-28 01:18:15,904 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-28 01:18:17,318 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-28 01:18:17,543 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-28 01:18:18,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:18:18,506 INFO L93 Difference]: Finished difference Result 603 states and 1071 transitions. [2020-10-28 01:18:18,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-28 01:18:18,507 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 101 [2020-10-28 01:18:18,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:18:18,514 INFO L225 Difference]: With dead ends: 603 [2020-10-28 01:18:18,514 INFO L226 Difference]: Without dead ends: 596 [2020-10-28 01:18:18,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=364, Invalid=2716, Unknown=0, NotChecked=0, Total=3080 [2020-10-28 01:18:18,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-10-28 01:18:18,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 420. [2020-10-28 01:18:18,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-10-28 01:18:18,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 695 transitions. [2020-10-28 01:18:18,611 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 695 transitions. Word has length 101 [2020-10-28 01:18:18,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:18:18,612 INFO L481 AbstractCegarLoop]: Abstraction has 420 states and 695 transitions. [2020-10-28 01:18:18,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-28 01:18:18,612 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 695 transitions. [2020-10-28 01:18:18,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 01:18:18,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:18:18,616 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 6, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:18:18,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 01:18:18,617 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:18:18,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:18:18,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1271284934, now seen corresponding path program 3 times [2020-10-28 01:18:18,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:18:18,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032002953] [2020-10-28 01:18:18,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:18:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:18,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:18,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:19,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:19,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:19,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:20,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:23,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:23,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 01:18:23,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 01:18:23,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 01:18:23,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 01:18:23,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:18:23,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 01:18:23,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:23,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:18:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:23,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:23,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:23,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:23,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:23,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:23,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:23,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:23,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:18:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:23,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:23,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:23,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:23,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:23,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:23,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:23,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:23,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:18:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:23,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:23,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:24,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:24,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 01:18:24,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:18:24,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-28 01:18:24,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:24,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 01:18:24,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:24,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 01:18:24,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:24,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:24,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:24,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:24,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 01:18:24,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:24,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 01:18:24,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:24,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:24,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:24,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 01:18:24,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:24,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:24,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:24,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:24,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:24,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:24,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:24,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:24,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:24,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:24,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:24,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:24,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:18:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:24,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:24,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:24,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:24,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:24,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:24,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:24,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:24,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:24,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:24,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:24,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 01:18:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:24,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:24,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:24,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-28 01:18:24,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:24,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 01:18:24,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:24,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:18:24,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:24,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 01:18:24,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:24,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:24,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:24,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:24,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 01:18:24,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:24,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 01:18:24,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:24,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:24,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:24,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 01:18:24,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:24,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:24,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:24,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:24,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:24,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:24,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:24,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:24,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:24,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:24,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:24,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:24,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:18:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:24,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:24,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:24,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 01:18:24,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:24,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:18:24,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:24,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:24,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:24,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:24,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:24,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:24,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:24,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:24,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:24,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:24,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:24,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:24,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:24,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:18:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:24,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:24,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:24,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:24,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:24,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:24,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:24,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:24,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:24,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:24,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:24,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 01:18:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:24,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:24,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:24,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:24,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:24,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:24,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:24,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:24,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:24,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:24,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:24,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 01:18:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:24,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:24,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:24,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:24,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:24,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:18:24,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:18:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:18:24,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:24,877 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 64 proven. 33 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2020-10-28 01:18:24,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032002953] [2020-10-28 01:18:24,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:18:24,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 01:18:24,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423787190] [2020-10-28 01:18:24,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 01:18:24,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:18:24,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 01:18:24,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=546, Unknown=0, NotChecked=0, Total=600 [2020-10-28 01:18:24,879 INFO L87 Difference]: Start difference. First operand 420 states and 695 transitions. Second operand 25 states. [2020-10-28 01:18:25,527 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-28 01:18:25,983 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-28 01:18:26,283 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-28 01:18:26,459 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-28 01:18:26,664 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-10-28 01:18:26,913 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-28 01:18:28,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:18:28,679 INFO L93 Difference]: Finished difference Result 541 states and 894 transitions. [2020-10-28 01:18:28,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 01:18:28,680 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 102 [2020-10-28 01:18:28,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:18:28,685 INFO L225 Difference]: With dead ends: 541 [2020-10-28 01:18:28,685 INFO L226 Difference]: Without dead ends: 534 [2020-10-28 01:18:28,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=293, Invalid=2059, Unknown=0, NotChecked=0, Total=2352 [2020-10-28 01:18:28,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-10-28 01:18:28,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 390. [2020-10-28 01:18:28,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-10-28 01:18:28,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 649 transitions. [2020-10-28 01:18:28,754 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 649 transitions. Word has length 102 [2020-10-28 01:18:28,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:18:28,755 INFO L481 AbstractCegarLoop]: Abstraction has 390 states and 649 transitions. [2020-10-28 01:18:28,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 01:18:28,755 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 649 transitions. [2020-10-28 01:18:28,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 01:18:28,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:18:28,761 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:18:28,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 01:18:28,761 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:18:28,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:18:28,761 INFO L82 PathProgramCache]: Analyzing trace with hash 274717207, now seen corresponding path program 4 times [2020-10-28 01:18:28,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:18:28,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053762849] [2020-10-28 01:18:28,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:18:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:28,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:28,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:29,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:29,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:29,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:29,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:33,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:33,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 01:18:33,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 01:18:33,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 01:18:33,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:33,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 01:18:33,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:18:33,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 01:18:33,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:34,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:18:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:34,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:34,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:34,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:34,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:34,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:34,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:34,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:34,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:34,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:34,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:34,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:18:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:34,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:34,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:34,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:34,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:34,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:34,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:34,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:34,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:34,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:34,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:34,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:18:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:34,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:34,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:34,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:34,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:34,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 01:18:34,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:18:34,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 871 [2020-10-28 01:18:34,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 01:18:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 01:18:34,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:35,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:35,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:35,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:35,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:35,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:35,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:35,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:35,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:35,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:35,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:35,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:35,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:18:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:35,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:35,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:35,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:35,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 01:18:35,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:18:35,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 01:18:35,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:35,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 01:18:35,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:35,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 01:18:35,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:35,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:35,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:35,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:35,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:35,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:35,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:35,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:35,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:35,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:35,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:35,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:35,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:18:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:35,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:35,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:35,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 01:18:35,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:35,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 01:18:35,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:35,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 01:18:35,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:35,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 01:18:35,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:35,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:35,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:35,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:35,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:35,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:35,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:18:35,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:18:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:35,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:35,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:18:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:35,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:35,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:35,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:35,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:35,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:35,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:35,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:35,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:35,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:35,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:35,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 01:18:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:35,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:35,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:35,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:35,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:35,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:35,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:35,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:35,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:35,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:35,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:35,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 01:18:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:35,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:35,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:35,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:35,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:35,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:35,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:35,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:35,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:35,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:35,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 29 proven. 47 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-28 01:18:35,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053762849] [2020-10-28 01:18:35,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:18:35,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 01:18:35,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561054431] [2020-10-28 01:18:35,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 01:18:35,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:18:35,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 01:18:35,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2020-10-28 01:18:35,631 INFO L87 Difference]: Start difference. First operand 390 states and 649 transitions. Second operand 26 states. [2020-10-28 01:18:40,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:18:40,986 INFO L93 Difference]: Finished difference Result 617 states and 1069 transitions. [2020-10-28 01:18:40,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-28 01:18:40,987 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 84 [2020-10-28 01:18:40,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:18:40,995 INFO L225 Difference]: With dead ends: 617 [2020-10-28 01:18:40,995 INFO L226 Difference]: Without dead ends: 614 [2020-10-28 01:18:40,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=478, Invalid=3554, Unknown=0, NotChecked=0, Total=4032 [2020-10-28 01:18:41,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2020-10-28 01:18:41,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 604. [2020-10-28 01:18:41,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2020-10-28 01:18:41,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 1053 transitions. [2020-10-28 01:18:41,085 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 1053 transitions. Word has length 84 [2020-10-28 01:18:41,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:18:41,085 INFO L481 AbstractCegarLoop]: Abstraction has 604 states and 1053 transitions. [2020-10-28 01:18:41,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 01:18:41,085 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1053 transitions. [2020-10-28 01:18:41,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 01:18:41,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:18:41,091 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:18:41,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 01:18:41,092 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:18:41,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:18:41,092 INFO L82 PathProgramCache]: Analyzing trace with hash -992426670, now seen corresponding path program 4 times [2020-10-28 01:18:41,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:18:41,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361139690] [2020-10-28 01:18:41,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:18:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:41,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:41,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:41,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:41,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:41,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:41,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:41,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:41,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:46,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 01:18:46,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 01:18:46,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 01:18:46,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:46,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 01:18:46,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 01:18:46,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 01:18:46,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:46,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:18:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:46,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:46,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:46,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:46,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:46,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:46,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:46,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:46,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:46,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:46,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:18:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:46,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:46,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:46,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:46,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:46,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:46,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:46,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:46,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:46,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:46,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:18:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:46,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:46,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-28 01:18:46,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 01:18:46,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-28 01:18:46,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:46,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 01:18:46,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 01:18:46,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 01:18:46,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:46,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:46,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:46,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:46,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:46,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:46,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:46,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:46,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:18:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:46,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:46,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 01:18:46,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:18:46,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 01:18:46,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:46,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 01:18:46,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 01:18:46,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 01:18:46,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:46,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:46,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:46,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:46,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:46,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:46,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:46,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 01:18:46,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:46,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 01:18:46,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:46,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:18:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:46,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:46,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 01:18:46,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:18:46,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 01:18:46,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:46,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:18:46,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:46,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 01:18:46,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:46,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:46,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:46,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:46,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:46,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:46,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:46,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:46,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:46,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:46,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:46,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:18:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:46,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:46,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:46,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:46,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:46,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:46,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:46,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:46,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:46,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:46,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 01:18:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:46,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:46,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:46,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:46,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:46,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:46,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:46,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 01:18:46,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:46,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:46,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 01:18:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:46,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:46,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:46,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:46,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:46,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:46,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:46,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 01:18:46,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:46,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 39 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-28 01:18:46,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361139690] [2020-10-28 01:18:46,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:18:46,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 01:18:46,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248632899] [2020-10-28 01:18:46,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 01:18:46,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:18:46,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 01:18:46,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-28 01:18:46,973 INFO L87 Difference]: Start difference. First operand 604 states and 1053 transitions. Second operand 12 states. [2020-10-28 01:18:47,554 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-28 01:18:47,690 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-28 01:18:48,108 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-28 01:18:48,471 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-28 01:18:48,600 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-28 01:18:48,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:18:48,742 INFO L93 Difference]: Finished difference Result 1311 states and 2713 transitions. [2020-10-28 01:18:48,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 01:18:48,743 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 85 [2020-10-28 01:18:48,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:18:48,751 INFO L225 Difference]: With dead ends: 1311 [2020-10-28 01:18:48,751 INFO L226 Difference]: Without dead ends: 723 [2020-10-28 01:18:48,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2020-10-28 01:18:48,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-10-28 01:18:48,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 630. [2020-10-28 01:18:48,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-10-28 01:18:48,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1091 transitions. [2020-10-28 01:18:48,881 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1091 transitions. Word has length 85 [2020-10-28 01:18:48,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:18:48,881 INFO L481 AbstractCegarLoop]: Abstraction has 630 states and 1091 transitions. [2020-10-28 01:18:48,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 01:18:48,882 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1091 transitions. [2020-10-28 01:18:48,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 01:18:48,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:18:48,888 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:18:48,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 01:18:48,888 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:18:48,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:18:48,888 INFO L82 PathProgramCache]: Analyzing trace with hash 816799369, now seen corresponding path program 3 times [2020-10-28 01:18:48,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:18:48,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091521927] [2020-10-28 01:18:48,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:18:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:48,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:48,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:49,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:50,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:50,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 01:18:50,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:18:50,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1373 [2020-10-28 01:18:50,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:50,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 01:18:50,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:18:50,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 01:18:50,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:50,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:18:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:50,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:50,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:50,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:50,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:50,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:50,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:50,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:50,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:50,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:50,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:50,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:18:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:50,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:50,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:50,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:50,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:50,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:50,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:50,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:50,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:50,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:50,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:50,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:18:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:50,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:50,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:50,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 01:18:50,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:50,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 01:18:50,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:50,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 01:18:50,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:50,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 01:18:50,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:50,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:50,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:50,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:50,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 01:18:50,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:50,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 01:18:50,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:50,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 01:18:50,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:50,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 01:18:50,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:50,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:50,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:50,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:50,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:50,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:50,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:18:50,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:50,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:18:50,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:50,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:18:50,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:50,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:18:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:50,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:50,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:50,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:50,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:50,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:18:50,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:50,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:50,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:50,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:50,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:50,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 01:18:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:50,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:50,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:50,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:50,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:50,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:50,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:50,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:50,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 01:18:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:50,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:50,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:50,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:50,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:50,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:50,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:50,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:50,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:50,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:50,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:50,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 01:18:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:50,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:50,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:50,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:50,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:50,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:50,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:50,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:50,855 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 12 proven. 32 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-28 01:18:50,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091521927] [2020-10-28 01:18:50,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:18:50,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 01:18:50,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333662259] [2020-10-28 01:18:50,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 01:18:50,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:18:50,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 01:18:50,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-28 01:18:50,857 INFO L87 Difference]: Start difference. First operand 630 states and 1091 transitions. Second operand 18 states. [2020-10-28 01:18:53,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:18:53,635 INFO L93 Difference]: Finished difference Result 903 states and 1705 transitions. [2020-10-28 01:18:53,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 01:18:53,636 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 71 [2020-10-28 01:18:53,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:18:53,647 INFO L225 Difference]: With dead ends: 903 [2020-10-28 01:18:53,647 INFO L226 Difference]: Without dead ends: 886 [2020-10-28 01:18:53,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=165, Invalid=1025, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 01:18:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2020-10-28 01:18:53,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 864. [2020-10-28 01:18:53,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 864 states. [2020-10-28 01:18:53,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1660 transitions. [2020-10-28 01:18:53,808 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1660 transitions. Word has length 71 [2020-10-28 01:18:53,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:18:53,811 INFO L481 AbstractCegarLoop]: Abstraction has 864 states and 1660 transitions. [2020-10-28 01:18:53,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 01:18:53,811 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1660 transitions. [2020-10-28 01:18:53,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 01:18:53,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:18:53,824 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:18:53,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 01:18:53,824 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:18:53,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:18:53,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1367569483, now seen corresponding path program 2 times [2020-10-28 01:18:53,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:18:53,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624449391] [2020-10-28 01:18:53,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:18:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:53,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:53,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:54,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:54,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:54,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 01:18:54,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:18:54,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1084 [2020-10-28 01:18:54,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:54,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 01:18:54,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:18:54,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 01:18:54,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:55,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:18:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:55,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:55,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:55,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:55,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:55,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:55,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:55,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:55,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:55,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:55,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:55,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:18:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:55,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:55,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:55,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:55,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:55,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:55,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:55,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:55,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:55,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:55,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:55,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:18:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:55,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:55,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:55,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 01:18:55,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:55,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 01:18:55,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:55,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 01:18:55,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:55,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 01:18:55,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:55,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:55,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:55,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:55,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 01:18:55,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:55,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 01:18:55,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:55,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 01:18:55,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:55,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 01:18:55,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:55,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:18:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:55,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:55,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:55,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:55,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:55,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:55,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:55,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:55,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:55,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:55,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:55,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:18:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:55,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:55,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:55,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:55,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:55,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:18:55,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:55,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:18:55,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:55,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:18:55,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:55,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 01:18:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:55,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:55,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:55,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:55,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:55,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:55,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:55,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:55,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:55,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:55,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:55,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 01:18:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:55,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:55,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:55,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:55,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:55,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:55,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:55,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:55,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:55,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:55,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:55,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 01:18:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:55,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:55,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:55,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:55,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:55,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:55,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:55,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:55,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:55,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:55,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:55,544 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-28 01:18:55,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624449391] [2020-10-28 01:18:55,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:18:55,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 01:18:55,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113985737] [2020-10-28 01:18:55,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 01:18:55,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:18:55,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 01:18:55,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-28 01:18:55,547 INFO L87 Difference]: Start difference. First operand 864 states and 1660 transitions. Second operand 19 states. [2020-10-28 01:18:58,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:18:58,865 INFO L93 Difference]: Finished difference Result 1513 states and 3681 transitions. [2020-10-28 01:18:58,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 01:18:58,866 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 71 [2020-10-28 01:18:58,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:18:58,884 INFO L225 Difference]: With dead ends: 1513 [2020-10-28 01:18:58,884 INFO L226 Difference]: Without dead ends: 1472 [2020-10-28 01:18:58,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=213, Invalid=1347, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 01:18:58,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2020-10-28 01:18:59,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1271. [2020-10-28 01:18:59,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-10-28 01:18:59,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 3245 transitions. [2020-10-28 01:18:59,603 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 3245 transitions. Word has length 71 [2020-10-28 01:18:59,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:18:59,604 INFO L481 AbstractCegarLoop]: Abstraction has 1271 states and 3245 transitions. [2020-10-28 01:18:59,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 01:18:59,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 3245 transitions. [2020-10-28 01:18:59,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-28 01:18:59,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:18:59,628 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:18:59,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 01:18:59,629 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:18:59,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:18:59,629 INFO L82 PathProgramCache]: Analyzing trace with hash 160572272, now seen corresponding path program 3 times [2020-10-28 01:18:59,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:18:59,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150192548] [2020-10-28 01:18:59,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:18:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:59,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:59,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:00,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:02,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:02,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 01:19:02,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:19:02,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2657 [2020-10-28 01:19:02,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:02,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 01:19:02,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:19:02,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 01:19:02,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:02,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:19:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:02,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:02,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:02,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:19:02,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:02,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:19:02,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:02,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:02,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:02,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:02,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:02,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:19:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:02,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:02,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:02,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:19:02,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:02,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:19:02,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:02,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:02,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:02,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:02,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:02,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:19:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:02,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:02,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:02,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 01:19:02,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:02,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 01:19:02,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:02,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 01:19:02,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:02,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 01:19:02,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:02,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:19:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:02,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:02,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:02,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:02,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:02,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:19:02,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:02,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:02,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:02,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:02,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:02,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:19:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:02,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:03,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:03,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 01:19:03,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:03,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 01:19:03,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 01:19:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 01:19:03,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:03,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:19:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:03,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:03,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:03,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:03,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:03,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:19:03,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:03,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:03,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:19:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:03,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:03,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:03,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 01:19:03,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:03,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 01:19:03,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:03,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:19:03,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:03,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 01:19:03,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:03,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:19:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:03,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:03,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:03,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:03,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:03,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:19:03,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:03,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:03,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:03,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:03,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:03,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:19:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:03,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:03,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:03,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:03,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:03,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:19:03,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:03,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:03,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:03,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:03,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:03,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 01:19:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:03,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:03,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:03,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:03,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:03,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:19:03,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:03,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:03,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:03,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:03,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:03,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 01:19:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:03,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:03,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:03,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:03,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:03,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:19:03,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:03,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:03,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:03,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:03,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 31 proven. 42 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-28 01:19:03,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150192548] [2020-10-28 01:19:03,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:19:03,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-28 01:19:03,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328369614] [2020-10-28 01:19:03,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-28 01:19:03,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:19:03,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-28 01:19:03,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-10-28 01:19:03,455 INFO L87 Difference]: Start difference. First operand 1271 states and 3245 transitions. Second operand 27 states. [2020-10-28 01:19:08,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:19:08,422 INFO L93 Difference]: Finished difference Result 1709 states and 4836 transitions. [2020-10-28 01:19:08,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 01:19:08,422 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 87 [2020-10-28 01:19:08,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:19:08,443 INFO L225 Difference]: With dead ends: 1709 [2020-10-28 01:19:08,444 INFO L226 Difference]: Without dead ends: 1706 [2020-10-28 01:19:08,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=288, Invalid=2574, Unknown=0, NotChecked=0, Total=2862 [2020-10-28 01:19:08,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2020-10-28 01:19:09,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1519. [2020-10-28 01:19:09,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1519 states. [2020-10-28 01:19:09,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 4126 transitions. [2020-10-28 01:19:09,106 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 4126 transitions. Word has length 87 [2020-10-28 01:19:09,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:19:09,106 INFO L481 AbstractCegarLoop]: Abstraction has 1519 states and 4126 transitions. [2020-10-28 01:19:09,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-28 01:19:09,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 4126 transitions. [2020-10-28 01:19:09,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 01:19:09,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:19:09,136 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:19:09,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 01:19:09,137 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:19:09,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:19:09,137 INFO L82 PathProgramCache]: Analyzing trace with hash 2019997433, now seen corresponding path program 1 times [2020-10-28 01:19:09,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:19:09,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096859530] [2020-10-28 01:19:09,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:19:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:09,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:09,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:09,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:09,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:09,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:12,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:12,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:12,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:13,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:13,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:13,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:14,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:14,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 01:19:14,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 01:19:14,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 01:19:14,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:14,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-28 01:19:14,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:19:14,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 01:19:14,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:14,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:19:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:14,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:14,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:14,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:19:14,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:14,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:19:14,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:14,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:14,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:19:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:14,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:14,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:14,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:19:14,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:14,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:19:14,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:14,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:14,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:19:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:14,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:14,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:14,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:14,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:15,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:15,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:15,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:15,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:15,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:15,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 01:19:15,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 01:19:15,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1273 [2020-10-28 01:19:15,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:15,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 01:19:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 01:19:15,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:16,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:19:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:16,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:16,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:16,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:16,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:16,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:16,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 01:19:16,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 01:19:16,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-28 01:19:16,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:16,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 01:19:16,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:16,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 01:19:16,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:17,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:19:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:17,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:17,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:17,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:17,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:17,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:19:17,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:19:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:17,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:17,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:19:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:17,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:17,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:17,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 01:19:17,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:17,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 01:19:17,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:17,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 01:19:17,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:17,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 01:19:17,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:17,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:19:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:17,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:17,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:17,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:17,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:17,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:19:17,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:19:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:17,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:17,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:19:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:17,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:17,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:17,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:17,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:17,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:19:17,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:17,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:17,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:17,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:17,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:17,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 01:19:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:17,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:17,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:17,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:17,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:17,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:19:17,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:17,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:19:17,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:17,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:17,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:17,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 01:19:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:17,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:17,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:17,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:17,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:17,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:19:17,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:17,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:19:17,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:17,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:19:17,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:17,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 01:19:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:17,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:17,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:17,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:17,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:17,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:19:17,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:17,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:17,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:17,861 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 14 proven. 72 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-28 01:19:17,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096859530] [2020-10-28 01:19:17,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:19:17,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-28 01:19:17,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840440079] [2020-10-28 01:19:17,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-28 01:19:17,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:19:17,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-28 01:19:17,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1251, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 01:19:17,863 INFO L87 Difference]: Start difference. First operand 1519 states and 4126 transitions. Second operand 37 states. [2020-10-28 01:19:18,872 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-28 01:19:19,993 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-28 01:19:20,239 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-28 01:19:20,597 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-10-28 01:19:21,692 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-28 01:19:25,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:19:25,902 INFO L93 Difference]: Finished difference Result 2183 states and 7603 transitions. [2020-10-28 01:19:25,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 01:19:25,906 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 86 [2020-10-28 01:19:25,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:19:25,935 INFO L225 Difference]: With dead ends: 2183 [2020-10-28 01:19:25,935 INFO L226 Difference]: Without dead ends: 2180 [2020-10-28 01:19:25,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=435, Invalid=4677, Unknown=0, NotChecked=0, Total=5112 [2020-10-28 01:19:25,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2020-10-28 01:19:26,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 1737. [2020-10-28 01:19:26,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1737 states. [2020-10-28 01:19:26,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 5348 transitions. [2020-10-28 01:19:26,732 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 5348 transitions. Word has length 86 [2020-10-28 01:19:26,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:19:26,732 INFO L481 AbstractCegarLoop]: Abstraction has 1737 states and 5348 transitions. [2020-10-28 01:19:26,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-28 01:19:26,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 5348 transitions. [2020-10-28 01:19:26,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-28 01:19:26,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:19:26,768 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:19:26,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 01:19:26,768 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:19:26,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:19:26,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1849531569, now seen corresponding path program 4 times [2020-10-28 01:19:26,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:19:26,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557636374] [2020-10-28 01:19:26,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:19:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:26,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:26,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:27,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:27,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:28,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:28,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:31,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:31,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 01:19:31,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 01:19:31,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 01:19:31,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:31,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 01:19:31,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:19:31,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 01:19:31,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:32,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:19:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:32,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:32,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:32,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:19:32,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:32,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:19:32,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:32,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:32,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:32,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:32,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:32,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:19:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:32,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:32,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:32,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:19:32,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:32,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:19:32,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:32,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:32,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:32,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:32,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:32,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:19:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:32,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:32,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:32,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:32,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 01:19:32,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:19:32,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-28 01:19:32,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:32,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 01:19:32,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:32,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 01:19:32,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:32,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:19:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:32,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:32,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:32,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:32,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:32,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:19:32,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:32,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:32,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:32,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:32,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:32,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:19:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:32,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:32,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:32,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 01:19:32,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:32,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 01:19:32,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:32,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 01:19:32,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:32,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 01:19:32,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:33,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:19:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:33,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:33,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:33,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:33,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:33,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:19:33,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:33,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:33,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:19:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:33,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:33,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:33,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 01:19:33,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 01:19:33,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:19:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 01:19:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:33,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:19:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:33,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:33,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:33,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:33,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:33,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:19:33,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:33,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:33,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:19:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:33,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:33,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:33,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:33,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:33,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:19:33,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:33,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:33,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:33,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:33,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:33,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 01:19:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:33,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:33,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:33,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:33,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:33,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:19:33,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:33,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:33,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:33,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:33,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:33,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 01:19:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:33,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:33,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:33,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:33,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:33,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:19:33,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:33,308 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 31 proven. 42 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-28 01:19:33,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557636374] [2020-10-28 01:19:33,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:19:33,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 01:19:33,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73311398] [2020-10-28 01:19:33,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 01:19:33,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:19:33,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 01:19:33,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=702, Unknown=0, NotChecked=0, Total=756 [2020-10-28 01:19:33,310 INFO L87 Difference]: Start difference. First operand 1737 states and 5348 transitions. Second operand 28 states. [2020-10-28 01:19:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:19:38,499 INFO L93 Difference]: Finished difference Result 2003 states and 5881 transitions. [2020-10-28 01:19:38,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 01:19:38,500 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 87 [2020-10-28 01:19:38,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:19:38,520 INFO L225 Difference]: With dead ends: 2003 [2020-10-28 01:19:38,521 INFO L226 Difference]: Without dead ends: 2000 [2020-10-28 01:19:38,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=338, Invalid=2742, Unknown=0, NotChecked=0, Total=3080 [2020-10-28 01:19:38,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2020-10-28 01:19:39,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1553. [2020-10-28 01:19:39,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-28 01:19:39,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 4722 transitions. [2020-10-28 01:19:39,305 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 4722 transitions. Word has length 87 [2020-10-28 01:19:39,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:19:39,305 INFO L481 AbstractCegarLoop]: Abstraction has 1553 states and 4722 transitions. [2020-10-28 01:19:39,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 01:19:39,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 4722 transitions. [2020-10-28 01:19:39,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 01:19:39,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:19:39,333 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:19:39,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 01:19:39,333 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:19:39,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:19:39,334 INFO L82 PathProgramCache]: Analyzing trace with hash 295350165, now seen corresponding path program 3 times [2020-10-28 01:19:39,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:19:39,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335119566] [2020-10-28 01:19:39,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:19:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:39,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:39,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:39,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:39,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:39,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:44,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:44,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 01:19:44,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 01:19:44,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 01:19:44,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:44,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 01:19:44,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:19:44,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 01:19:44,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:44,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:19:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:44,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:44,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:44,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:19:44,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:44,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:19:44,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:44,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:44,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:44,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:44,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:44,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:19:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:44,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:44,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:44,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:19:44,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:44,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:19:44,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:44,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:44,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:19:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:44,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:44,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:45,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:45,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 01:19:45,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:19:45,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-10-28 01:19:45,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:45,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 01:19:45,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:45,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 01:19:45,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:45,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:19:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:45,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:45,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:45,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:45,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 01:19:45,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:19:45,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 01:19:45,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:45,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 01:19:45,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:45,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 01:19:45,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:45,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:19:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:45,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:45,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:45,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:45,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:45,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:19:45,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:45,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:45,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:45,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:45,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:45,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:19:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:45,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:45,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:45,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 01:19:45,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:45,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 01:19:45,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 01:19:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 01:19:45,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:45,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:19:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:45,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:45,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:45,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:45,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:45,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:19:45,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:19:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:45,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:45,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:19:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:45,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:45,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:45,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:45,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:45,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:19:45,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:45,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:45,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:45,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:45,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:45,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 01:19:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:45,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:45,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:45,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:45,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:45,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:19:45,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:45,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:45,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:45,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:45,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 01:19:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:45,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:45,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:45,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:45,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:45,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:19:45,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:45,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:45,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:45,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:45,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:45,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 01:19:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:45,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:45,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:45,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:45,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:45,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:19:45,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:45,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:45,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:45,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:45,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:45,814 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 21 proven. 57 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 01:19:45,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335119566] [2020-10-28 01:19:45,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:19:45,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-28 01:19:45,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866228137] [2020-10-28 01:19:45,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-28 01:19:45,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:19:45,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-28 01:19:45,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=649, Unknown=0, NotChecked=0, Total=702 [2020-10-28 01:19:45,816 INFO L87 Difference]: Start difference. First operand 1553 states and 4722 transitions. Second operand 27 states. [2020-10-28 01:19:51,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:19:51,653 INFO L93 Difference]: Finished difference Result 2392 states and 9076 transitions. [2020-10-28 01:19:51,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-28 01:19:51,654 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 84 [2020-10-28 01:19:51,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:19:51,687 INFO L225 Difference]: With dead ends: 2392 [2020-10-28 01:19:51,687 INFO L226 Difference]: Without dead ends: 2389 [2020-10-28 01:19:51,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=390, Invalid=3270, Unknown=0, NotChecked=0, Total=3660 [2020-10-28 01:19:51,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2020-10-28 01:19:53,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2232. [2020-10-28 01:19:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2232 states. [2020-10-28 01:19:53,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 8316 transitions. [2020-10-28 01:19:53,036 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 8316 transitions. Word has length 84 [2020-10-28 01:19:53,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:19:53,036 INFO L481 AbstractCegarLoop]: Abstraction has 2232 states and 8316 transitions. [2020-10-28 01:19:53,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-28 01:19:53,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 8316 transitions. [2020-10-28 01:19:53,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-28 01:19:53,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:19:53,072 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:19:53,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 01:19:53,072 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:19:53,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:19:53,072 INFO L82 PathProgramCache]: Analyzing trace with hash 490338033, now seen corresponding path program 5 times [2020-10-28 01:19:53,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:19:53,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279340032] [2020-10-28 01:19:53,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:19:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:53,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:53,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:53,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:53,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:54,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:54,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:58,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:58,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 01:19:58,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 01:19:58,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 01:19:58,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:58,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 01:19:58,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:19:58,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 01:19:58,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:58,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:19:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:58,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:58,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:58,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:19:58,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:58,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:19:58,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:58,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:58,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:58,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:58,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:58,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:19:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:58,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:58,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:58,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:19:58,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:58,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:19:58,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:58,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:58,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:58,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:58,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:58,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:19:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:58,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:58,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:58,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:58,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 01:19:58,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:19:58,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-28 01:19:58,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:58,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 01:19:58,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:58,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 01:19:58,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:58,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:19:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:58,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:58,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:58,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:58,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:58,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:19:58,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:58,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:58,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:58,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:58,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:58,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:19:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:59,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:59,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:59,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:59,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 01:19:59,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:19:59,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 01:19:59,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 01:19:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 01:19:59,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:59,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:19:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:59,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:59,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:59,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:59,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:59,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:19:59,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:59,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:59,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:59,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:59,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:59,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:19:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:59,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:59,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:59,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 01:19:59,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:59,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 01:19:59,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:59,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:19:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 01:19:59,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:59,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:19:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:59,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:59,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:59,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:59,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:59,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:19:59,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:59,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:59,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:59,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:59,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:19:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:59,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:59,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:59,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:59,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:59,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:19:59,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:59,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:59,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:59,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:59,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:59,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 01:19:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:59,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:59,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:59,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:59,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:59,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:19:59,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:59,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:59,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:59,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:59,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:59,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 01:19:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:59,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:59,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:59,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:59,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:59,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:19:59,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:59,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:19:59,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:59,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:19:59,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 31 proven. 42 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-28 01:19:59,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279340032] [2020-10-28 01:19:59,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:19:59,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 01:19:59,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925877987] [2020-10-28 01:19:59,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 01:19:59,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:19:59,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 01:19:59,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=702, Unknown=0, NotChecked=0, Total=756 [2020-10-28 01:19:59,609 INFO L87 Difference]: Start difference. First operand 2232 states and 8316 transitions. Second operand 28 states. [2020-10-28 01:20:05,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:20:05,424 INFO L93 Difference]: Finished difference Result 2492 states and 8917 transitions. [2020-10-28 01:20:05,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 01:20:05,425 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 87 [2020-10-28 01:20:05,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:20:05,458 INFO L225 Difference]: With dead ends: 2492 [2020-10-28 01:20:05,458 INFO L226 Difference]: Without dead ends: 2489 [2020-10-28 01:20:05,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=380, Invalid=3042, Unknown=0, NotChecked=0, Total=3422 [2020-10-28 01:20:05,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2020-10-28 01:20:06,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2180. [2020-10-28 01:20:06,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2180 states. [2020-10-28 01:20:06,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 7848 transitions. [2020-10-28 01:20:06,807 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 7848 transitions. Word has length 87 [2020-10-28 01:20:06,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:20:06,807 INFO L481 AbstractCegarLoop]: Abstraction has 2180 states and 7848 transitions. [2020-10-28 01:20:06,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 01:20:06,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 7848 transitions. [2020-10-28 01:20:06,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-28 01:20:06,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:20:06,843 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:20:06,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 01:20:06,844 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:20:06,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:20:06,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1519765808, now seen corresponding path program 1 times [2020-10-28 01:20:06,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:20:06,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971137487] [2020-10-28 01:20:06,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:20:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:20:06,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:06,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:07,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:07,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:07,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:08,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:09,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:09,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:11,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:20:11,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 01:20:11,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 01:20:11,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 01:20:11,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:20:11,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-28 01:20:11,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:20:11,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 01:20:11,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:20:12,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:20:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:20:12,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:12,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:20:12,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:20:12,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:20:12,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:20:12,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:20:12,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:20:12,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:20:12,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:20:12,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:20:12,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:20:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:20:12,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:12,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:20:12,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:20:12,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:20:12,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:20:12,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:20:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:20:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:20:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:20:12,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:20:12,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:20:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:20:12,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:12,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:12,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:12,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:12,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:20:12,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 01:20:12,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 01:20:12,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 627 [2020-10-28 01:20:12,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:20:12,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 01:20:12,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:20:12,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 01:20:12,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:20:13,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:20:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:20:13,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:13,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:20:13,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:20:13,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:20:13,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:20:13,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:20:13,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:20:13,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:20:13,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:20:13,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:20:13,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:20:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:20:13,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:13,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:13,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:20:13,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 01:20:13,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:20:13,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 01:20:13,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:20:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 01:20:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:20:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 01:20:13,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:20:13,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:20:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:20:13,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:13,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:20:13,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:20:13,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:20:13,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:20:13,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:20:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:20:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:20:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:20:13,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:20:13,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:20:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:20:13,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:13,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:20:13,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 01:20:13,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:20:13,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 01:20:13,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:20:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:20:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:20:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 01:20:13,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:20:13,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:20:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:20:13,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:13,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:20:13,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:20:13,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:20:13,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:20:13,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:20:13,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:20:13,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:20:13,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:20:13,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:20:13,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:20:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:20:13,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:13,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:20:13,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:20:13,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:20:13,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:20:13,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:20:13,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:20:13,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:20:13,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:20:13,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:20:13,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 01:20:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:20:13,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:13,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:20:13,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:20:13,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:20:13,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:20:13,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:20:13,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:20:13,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:20:13,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:20:13,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:20:13,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 01:20:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:20:14,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:14,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:20:14,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:20:14,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:20:14,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:20:14,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:20:14,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:20:14,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:20:14,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:20:14,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:20:14,020 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 29 proven. 52 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-28 01:20:14,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971137487] [2020-10-28 01:20:14,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:20:14,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-28 01:20:14,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969446026] [2020-10-28 01:20:14,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-28 01:20:14,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:20:14,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-28 01:20:14,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=868, Unknown=0, NotChecked=0, Total=930 [2020-10-28 01:20:14,022 INFO L87 Difference]: Start difference. First operand 2180 states and 7848 transitions. Second operand 31 states. [2020-10-28 01:20:17,097 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-28 01:20:21,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:20:21,067 INFO L93 Difference]: Finished difference Result 2298 states and 8130 transitions. [2020-10-28 01:20:21,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-28 01:20:21,068 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 87 [2020-10-28 01:20:21,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:20:21,099 INFO L225 Difference]: With dead ends: 2298 [2020-10-28 01:20:21,099 INFO L226 Difference]: Without dead ends: 2295 [2020-10-28 01:20:21,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=463, Invalid=4093, Unknown=0, NotChecked=0, Total=4556 [2020-10-28 01:20:21,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2020-10-28 01:20:22,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 2070. [2020-10-28 01:20:22,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2070 states. [2020-10-28 01:20:22,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 7564 transitions. [2020-10-28 01:20:22,162 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 7564 transitions. Word has length 87 [2020-10-28 01:20:22,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:20:22,163 INFO L481 AbstractCegarLoop]: Abstraction has 2070 states and 7564 transitions. [2020-10-28 01:20:22,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-28 01:20:22,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 7564 transitions. [2020-10-28 01:20:22,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 01:20:22,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:20:22,196 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:20:22,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 01:20:22,196 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:20:22,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:20:22,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1395529543, now seen corresponding path program 4 times [2020-10-28 01:20:22,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:20:22,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041831700] [2020-10-28 01:20:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:20:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:20:22,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:20:22,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking...