/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:00:15,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:00:15,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:00:16,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:00:16,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:00:16,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:00:16,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:00:16,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:00:16,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:00:16,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:00:16,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:00:16,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:00:16,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:00:16,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:00:16,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:00:16,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:00:16,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:00:16,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:00:16,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:00:16,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:00:16,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:00:16,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:00:16,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:00:16,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:00:16,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:00:16,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:00:16,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:00:16,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:00:16,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:00:16,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:00:16,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:00:16,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:00:16,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:00:16,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:00:16,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:00:16,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:00:16,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:00:16,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:00:16,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:00:16,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:00:16,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:00:16,110 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 [2020-09-25 02:00:16,164 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:00:16,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:00:16,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:00:16,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:00:16,167 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:00:16,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:00:16,167 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:00:16,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:00:16,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:00:16,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:00:16,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:00:16,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:00:16,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:00:16,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:00:16,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:00:16,171 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:00:16,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:00:16,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:00:16,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:00:16,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:00:16,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:00:16,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:00:16,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:00:16,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:00:16,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:00:16,173 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:00:16,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:00:16,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:00:16,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:00:16,173 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement 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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=true; [2020-09-25 02:00:16,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:00:16,683 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:00:16,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:00:16,690 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:00:16,691 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:00:16,692 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2020-09-25 02:00:16,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c8826511/ddb1368b8a314bf7804b8fb2976a35c3/FLAG0aec079dd [2020-09-25 02:00:17,357 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:00:17,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2020-09-25 02:00:17,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c8826511/ddb1368b8a314bf7804b8fb2976a35c3/FLAG0aec079dd [2020-09-25 02:00:17,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c8826511/ddb1368b8a314bf7804b8fb2976a35c3 [2020-09-25 02:00:17,687 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:00:17,693 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:00:17,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:00:17,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:00:17,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:00:17,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:00:17" (1/1) ... [2020-09-25 02:00:17,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2869c26e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:17, skipping insertion in model container [2020-09-25 02:00:17,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:00:17" (1/1) ... [2020-09-25 02:00:17,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:00:17,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:00:18,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:00:18,046 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:00:18,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:00:18,208 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:00:18,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:18 WrapperNode [2020-09-25 02:00:18,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:00:18,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:00:18,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:00:18,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:00:18,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:18" (1/1) ... [2020-09-25 02:00:18,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:18" (1/1) ... [2020-09-25 02:00:18,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:18" (1/1) ... [2020-09-25 02:00:18,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:18" (1/1) ... [2020-09-25 02:00:18,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:18" (1/1) ... [2020-09-25 02:00:18,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:18" (1/1) ... [2020-09-25 02:00:18,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:18" (1/1) ... [2020-09-25 02:00:18,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:00:18,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:00:18,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:00:18,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:00:18,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:18" (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 [2020-09-25 02:00:18,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:00:18,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:00:18,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:00:18,349 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-09-25 02:00:18,349 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-09-25 02:00:18,349 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-09-25 02:00:18,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:00:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:00:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 02:00:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 02:00:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:00:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-09-25 02:00:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-09-25 02:00:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-09-25 02:00:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:00:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:00:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:00:18,906 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:00:18,906 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 02:00:18,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:00:18 BoogieIcfgContainer [2020-09-25 02:00:18,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:00:18,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:00:18,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:00:18,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:00:18,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:00:17" (1/3) ... [2020-09-25 02:00:18,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae424a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:00:18, skipping insertion in model container [2020-09-25 02:00:18,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:18" (2/3) ... [2020-09-25 02:00:18,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae424a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:00:18, skipping insertion in model container [2020-09-25 02:00:18,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:00:18" (3/3) ... [2020-09-25 02:00:18,924 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2020-09-25 02:00:18,936 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:00:18,947 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:00:18,970 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:00:19,000 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:00:19,000 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:00:19,000 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:00:19,000 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:00:19,001 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:00:19,001 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:00:19,001 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:00:19,001 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:00:19,027 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-09-25 02:00:19,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-25 02:00:19,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:19,042 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:19,043 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:19,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:19,050 INFO L82 PathProgramCache]: Analyzing trace with hash -2062280112, now seen corresponding path program 1 times [2020-09-25 02:00:19,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:19,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133397403] [2020-09-25 02:00:19,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:19,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:19,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:20,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:20,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:21,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:21,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 02:00:21,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:00:21,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1861 [2020-09-25 02:00:21,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:21,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:00:21,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 02:00:21,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:00:21,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:00:21,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:21,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:21,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:21,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:21,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:21,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:00:21,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:21,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:21,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:21,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:21,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:21,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:00:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:21,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:21,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:21,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:21,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:21,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:21,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:21,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:21,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:21,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:21,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:21,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:00:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:21,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:21,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:21,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:21,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:21,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:00:21,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:21,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:00:21,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:21,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 02:00:21,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:21,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 02:00:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:21,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:21,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:21,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:21,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:21,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:00:21,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:21,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:21,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:00:21,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:21,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:21,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 02:00:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:21,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:21,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:21,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:21,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:21,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:00:21,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:21,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:00:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:21,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:21,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 02:00:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:21,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:21,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:21,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 02:00:21,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:21,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:00:21,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:21,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:21,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 02:00:21,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:21,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 02:00:21,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133397403] [2020-09-25 02:00:21,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:21,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 02:00:21,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922229240] [2020-09-25 02:00:21,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:00:21,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:21,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:00:21,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:00:21,386 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 4 states. [2020-09-25 02:00:21,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:21,588 INFO L93 Difference]: Finished difference Result 299 states and 381 transitions. [2020-09-25 02:00:21,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:00:21,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-09-25 02:00:21,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:21,610 INFO L225 Difference]: With dead ends: 299 [2020-09-25 02:00:21,610 INFO L226 Difference]: Without dead ends: 181 [2020-09-25 02:00:21,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:00:21,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-09-25 02:00:21,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 161. [2020-09-25 02:00:21,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-25 02:00:21,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 190 transitions. [2020-09-25 02:00:21,699 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 190 transitions. Word has length 100 [2020-09-25 02:00:21,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:21,700 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 190 transitions. [2020-09-25 02:00:21,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:00:21,700 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 190 transitions. [2020-09-25 02:00:21,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-25 02:00:21,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:21,707 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:21,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:00:21,708 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:21,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:21,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1947593625, now seen corresponding path program 1 times [2020-09-25 02:00:21,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:21,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83318806] [2020-09-25 02:00:21,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:21,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:21,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:22,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:22,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:22,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:22,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 02:00:22,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:00:22,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1203 [2020-09-25 02:00:22,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:22,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:00:22,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 02:00:22,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 02:00:22,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:22,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:22,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:22,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:22,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:22,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:22,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:22,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:22,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:22,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:00:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:22,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:22,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:22,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:22,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:22,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:00:22,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:22,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:22,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:22,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:22,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:22,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:00:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:23,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:23,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:23,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:00:23,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:23,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 02:00:23,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:23,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:00:23,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 02:00:23,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:00:23,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:23,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 02:00:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:23,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:23,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:23,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:23,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:23,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:00:23,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:23,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:00:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:23,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:23,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 02:00:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:23,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:23,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:23,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:23,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:23,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:00:23,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:00:23,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:23,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:23,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-25 02:00:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:23,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:23,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:23,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 02:00:23,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:23,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:00:23,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:23,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:23,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 02:00:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:23,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 02:00:23,154 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 02:00:23,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83318806] [2020-09-25 02:00:23,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:23,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 02:00:23,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472198255] [2020-09-25 02:00:23,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:00:23,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:23,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:00:23,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:00:23,160 INFO L87 Difference]: Start difference. First operand 161 states and 190 transitions. Second operand 4 states. [2020-09-25 02:00:23,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:23,337 INFO L93 Difference]: Finished difference Result 289 states and 342 transitions. [2020-09-25 02:00:23,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 02:00:23,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-09-25 02:00:23,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:23,349 INFO L225 Difference]: With dead ends: 289 [2020-09-25 02:00:23,350 INFO L226 Difference]: Without dead ends: 180 [2020-09-25 02:00:23,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:00:23,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-09-25 02:00:23,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 166. [2020-09-25 02:00:23,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-25 02:00:23,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 196 transitions. [2020-09-25 02:00:23,392 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 196 transitions. Word has length 103 [2020-09-25 02:00:23,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:23,393 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 196 transitions. [2020-09-25 02:00:23,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:00:23,393 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 196 transitions. [2020-09-25 02:00:23,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 02:00:23,397 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:23,398 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:23,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:00:23,398 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:23,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:23,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1243217844, now seen corresponding path program 1 times [2020-09-25 02:00:23,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:23,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742027873] [2020-09-25 02:00:23,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:23,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:23,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:23,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:23,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:24,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:24,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:26,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:26,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 02:00:26,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:00:26,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2699 [2020-09-25 02:00:26,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:00:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 02:00:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:26,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:26,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:26,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:26,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:26,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:26,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:26,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:00:26,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:26,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:26,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:26,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:26,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:26,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:00:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:26,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:26,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:26,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:26,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:26,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:00:26,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:26,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:26,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:00:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:26,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:26,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:26,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:26,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:26,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 02:00:26,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:00:26,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 02:00:26,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:26,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:00:26,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 02:00:26,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:00:26,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:26,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 02:00:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:26,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:26,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:26,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:26,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:26,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:00:26,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:26,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:26,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:00:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:26,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:26,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-25 02:00:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:26,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:26,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:26,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:26,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:26,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:00:26,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:26,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:26,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:00:26,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:26,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:26,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 02:00:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:26,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:26,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:26,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 02:00:26,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:26,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:00:26,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:26,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:26,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 02:00:26,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:26,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:00:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 02:00:26,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742027873] [2020-09-25 02:00:26,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:26,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 02:00:26,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028332054] [2020-09-25 02:00:26,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:00:26,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:26,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:00:26,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:00:26,347 INFO L87 Difference]: Start difference. First operand 166 states and 196 transitions. Second operand 4 states. [2020-09-25 02:00:26,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:26,447 INFO L93 Difference]: Finished difference Result 301 states and 358 transitions. [2020-09-25 02:00:26,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 02:00:26,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-09-25 02:00:26,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:26,455 INFO L225 Difference]: With dead ends: 301 [2020-09-25 02:00:26,455 INFO L226 Difference]: Without dead ends: 186 [2020-09-25 02:00:26,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:00:26,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-09-25 02:00:26,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 169. [2020-09-25 02:00:26,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-09-25 02:00:26,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 200 transitions. [2020-09-25 02:00:26,493 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 200 transitions. Word has length 104 [2020-09-25 02:00:26,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:26,495 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 200 transitions. [2020-09-25 02:00:26,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:00:26,496 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 200 transitions. [2020-09-25 02:00:26,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-25 02:00:26,498 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:26,498 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:26,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:00:26,499 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:26,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:26,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1613499316, now seen corresponding path program 1 times [2020-09-25 02:00:26,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:26,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886045079] [2020-09-25 02:00:26,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:26,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:26,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:26,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:26,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:27,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:27,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-25 02:00:27,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:00:27,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 971 [2020-09-25 02:00:27,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:27,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:00:27,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 02:00:27,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:27,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-09-25 02:00:27,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:27,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:27,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:27,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:27,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:27,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:27,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:27,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:27,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:27,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:27,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:27,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:00:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:27,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:27,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:27,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:27,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:27,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:00:27,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:27,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:27,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:00:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:27,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:27,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:27,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 02:00:27,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:27,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:00:27,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:27,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:00:27,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:27,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 02:00:27,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:27,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 02:00:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:27,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:27,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:27,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:27,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:27,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:00:27,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:27,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:27,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:00:27,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:27,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:27,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 02:00:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:27,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:27,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:27,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:27,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:27,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:27,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:27,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:27,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:00:27,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:27,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:27,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 02:00:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:27,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:27,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:27,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 02:00:27,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:27,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:00:27,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:27,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:27,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 02:00:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:27,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 02:00:27,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886045079] [2020-09-25 02:00:27,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:27,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 02:00:27,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750718360] [2020-09-25 02:00:27,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:00:27,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:27,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:00:27,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:00:27,674 INFO L87 Difference]: Start difference. First operand 169 states and 200 transitions. Second operand 4 states. [2020-09-25 02:00:27,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:27,810 INFO L93 Difference]: Finished difference Result 309 states and 368 transitions. [2020-09-25 02:00:27,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:00:27,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-09-25 02:00:27,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:27,813 INFO L225 Difference]: With dead ends: 309 [2020-09-25 02:00:27,813 INFO L226 Difference]: Without dead ends: 176 [2020-09-25 02:00:27,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:00:27,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-09-25 02:00:27,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 159. [2020-09-25 02:00:27,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-25 02:00:27,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 184 transitions. [2020-09-25 02:00:27,846 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 184 transitions. Word has length 105 [2020-09-25 02:00:27,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:27,851 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 184 transitions. [2020-09-25 02:00:27,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:00:27,851 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 184 transitions. [2020-09-25 02:00:27,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 02:00:27,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:27,853 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:27,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:00:27,853 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:27,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:27,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1622356113, now seen corresponding path program 1 times [2020-09-25 02:00:27,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:27,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684305200] [2020-09-25 02:00:27,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:27,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:27,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:28,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:28,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:29,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:29,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 02:00:29,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:00:29,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1238 [2020-09-25 02:00:29,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:29,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:29,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 02:00:29,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 02:00:29,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:29,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:29,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:29,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:29,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:29,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:29,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:29,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:29,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:29,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:29,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:29,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:29,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:00:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:29,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:29,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:29,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:29,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:29,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:29,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:29,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:29,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:29,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:29,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:29,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:00:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:29,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:29,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:29,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:00:29,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:29,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 02:00:29,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:29,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 02:00:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 02:00:29,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:29,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 02:00:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:29,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:29,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:29,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:29,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:29,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:29,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:29,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:29,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:00:29,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:29,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:29,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 02:00:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:29,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:29,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:29,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:29,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:29,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:29,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:29,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:00:29,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:29,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:29,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-25 02:00:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:29,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:29,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:29,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 02:00:29,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:29,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:00:29,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:29,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:29,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 02:00:29,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:29,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:29,233 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 02:00:29,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684305200] [2020-09-25 02:00:29,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:29,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 02:00:29,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575648565] [2020-09-25 02:00:29,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:00:29,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:29,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:00:29,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:00:29,236 INFO L87 Difference]: Start difference. First operand 159 states and 184 transitions. Second operand 5 states. [2020-09-25 02:00:29,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:29,328 INFO L93 Difference]: Finished difference Result 308 states and 363 transitions. [2020-09-25 02:00:29,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:00:29,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-09-25 02:00:29,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:29,331 INFO L225 Difference]: With dead ends: 308 [2020-09-25 02:00:29,331 INFO L226 Difference]: Without dead ends: 190 [2020-09-25 02:00:29,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:00:29,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-25 02:00:29,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 169. [2020-09-25 02:00:29,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-09-25 02:00:29,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 197 transitions. [2020-09-25 02:00:29,343 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 197 transitions. Word has length 108 [2020-09-25 02:00:29,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:29,343 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 197 transitions. [2020-09-25 02:00:29,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:00:29,344 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 197 transitions. [2020-09-25 02:00:29,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 02:00:29,345 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:29,345 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:29,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:00:29,346 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:29,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:29,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1409900093, now seen corresponding path program 1 times [2020-09-25 02:00:29,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:29,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508568377] [2020-09-25 02:00:29,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:29,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:29,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:29,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:29,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:30,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:30,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 02:00:30,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:00:30,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1146 [2020-09-25 02:00:30,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:30,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:30,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 02:00:30,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:00:30,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:30,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:30,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:30,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:30,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:30,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:30,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:30,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:30,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:30,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:30,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:30,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:30,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:00:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:30,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:30,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:30,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:30,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:30,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:30,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:30,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:30,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:30,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:30,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:30,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:00:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:30,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:30,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:30,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:00:30,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:30,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 02:00:30,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:30,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:30,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:30,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:00:30,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:30,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 02:00:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:30,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:30,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:30,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:30,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:30,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:30,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:30,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:30,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:00:30,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:30,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:30,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 02:00:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:30,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:30,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:30,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:30,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:30,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:30,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:30,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:30,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:00:30,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:30,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:30,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-25 02:00:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:30,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:30,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:30,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 02:00:30,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:30,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:00:30,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:30,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:30,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 02:00:30,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:30,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:30,680 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 02:00:30,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508568377] [2020-09-25 02:00:30,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:30,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 02:00:30,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168502365] [2020-09-25 02:00:30,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:00:30,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:30,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:00:30,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:00:30,683 INFO L87 Difference]: Start difference. First operand 169 states and 197 transitions. Second operand 5 states. [2020-09-25 02:00:30,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:30,870 INFO L93 Difference]: Finished difference Result 324 states and 383 transitions. [2020-09-25 02:00:30,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:00:30,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-09-25 02:00:30,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:30,873 INFO L225 Difference]: With dead ends: 324 [2020-09-25 02:00:30,874 INFO L226 Difference]: Without dead ends: 199 [2020-09-25 02:00:30,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:00:30,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-09-25 02:00:30,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 169. [2020-09-25 02:00:30,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-09-25 02:00:30,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 196 transitions. [2020-09-25 02:00:30,893 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 196 transitions. Word has length 108 [2020-09-25 02:00:30,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:30,894 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 196 transitions. [2020-09-25 02:00:30,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:00:30,895 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 196 transitions. [2020-09-25 02:00:30,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-09-25 02:00:30,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:30,899 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:30,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:00:30,900 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:30,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:30,900 INFO L82 PathProgramCache]: Analyzing trace with hash 2129807001, now seen corresponding path program 2 times [2020-09-25 02:00:30,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:30,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811372284] [2020-09-25 02:00:30,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:30,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:30,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:31,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:31,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:32,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:32,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 02:00:32,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:00:32,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1664 [2020-09-25 02:00:32,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:32,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:32,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 02:00:32,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:00:32,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:32,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:32,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:32,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:32,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:32,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:32,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:32,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:32,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:32,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:00:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:32,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:32,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:32,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:32,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:32,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:00:32,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:32,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:32,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:32,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:32,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:32,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:00:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:32,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:32,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:32,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 02:00:32,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:32,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 02:00:32,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:32,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:32,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 02:00:32,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 02:00:32,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:32,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 02:00:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:32,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:32,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:32,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:32,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:32,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:32,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:00:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:32,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:32,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 02:00:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:32,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:32,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:32,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:32,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:32,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:32,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:32,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:32,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:00:32,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:32,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:32,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 02:00:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:32,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:32,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:32,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 02:00:32,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:32,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:00:32,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:32,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:32,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 02:00:32,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:32,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 02:00:32,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811372284] [2020-09-25 02:00:32,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:32,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:00:32,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421597873] [2020-09-25 02:00:32,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:00:32,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:32,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:00:32,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:00:32,800 INFO L87 Difference]: Start difference. First operand 169 states and 196 transitions. Second operand 6 states. [2020-09-25 02:00:32,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:32,912 INFO L93 Difference]: Finished difference Result 338 states and 401 transitions. [2020-09-25 02:00:32,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:00:32,913 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-09-25 02:00:32,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:32,915 INFO L225 Difference]: With dead ends: 338 [2020-09-25 02:00:32,915 INFO L226 Difference]: Without dead ends: 215 [2020-09-25 02:00:32,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:00:32,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-09-25 02:00:32,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 179. [2020-09-25 02:00:32,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-09-25 02:00:32,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 209 transitions. [2020-09-25 02:00:32,928 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 209 transitions. Word has length 113 [2020-09-25 02:00:32,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:32,929 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 209 transitions. [2020-09-25 02:00:32,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:00:32,929 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 209 transitions. [2020-09-25 02:00:32,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-09-25 02:00:32,931 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:32,931 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:32,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:00:32,932 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:32,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:32,932 INFO L82 PathProgramCache]: Analyzing trace with hash -902449205, now seen corresponding path program 1 times [2020-09-25 02:00:32,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:32,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038541841] [2020-09-25 02:00:32,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:32,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:32,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:33,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:34,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:35,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 02:00:35,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:00:35,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2180 [2020-09-25 02:00:35,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:35,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:35,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 02:00:35,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 02:00:35,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:35,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:35,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:35,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:35,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:35,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:35,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:35,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:35,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:35,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:35,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:35,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:00:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:35,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:35,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:35,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:35,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:00:35,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:35,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:35,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:35,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:35,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:35,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:00:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:35,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:35,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 02:00:35,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:35,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 02:00:35,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:35,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:35,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:35,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 02:00:35,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:35,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 02:00:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:35,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:35,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:35,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:35,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:35,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:35,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:35,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:00:35,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:35,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:35,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 02:00:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:35,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:35,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:35,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:35,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:35,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:00:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:35,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:35,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 02:00:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:35,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:35,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 02:00:35,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:35,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:00:35,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:35,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:35,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 02:00:35,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:35,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 02:00:35,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038541841] [2020-09-25 02:00:35,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:35,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:00:35,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64916325] [2020-09-25 02:00:35,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:00:35,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:35,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:00:35,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:00:35,334 INFO L87 Difference]: Start difference. First operand 179 states and 209 transitions. Second operand 6 states. [2020-09-25 02:00:35,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:35,554 INFO L93 Difference]: Finished difference Result 344 states and 408 transitions. [2020-09-25 02:00:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:00:35,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-09-25 02:00:35,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:35,559 INFO L225 Difference]: With dead ends: 344 [2020-09-25 02:00:35,560 INFO L226 Difference]: Without dead ends: 214 [2020-09-25 02:00:35,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:00:35,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-25 02:00:35,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 179. [2020-09-25 02:00:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-09-25 02:00:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 208 transitions. [2020-09-25 02:00:35,583 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 208 transitions. Word has length 113 [2020-09-25 02:00:35,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:35,583 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 208 transitions. [2020-09-25 02:00:35,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:00:35,583 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 208 transitions. [2020-09-25 02:00:35,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-25 02:00:35,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:35,585 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:35,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:00:35,586 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:35,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:35,587 INFO L82 PathProgramCache]: Analyzing trace with hash 139965841, now seen corresponding path program 3 times [2020-09-25 02:00:35,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:35,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26516457] [2020-09-25 02:00:35,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:35,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:37,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 02:00:37,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:00:37,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1906 [2020-09-25 02:00:37,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:37,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:00:37,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 02:00:37,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 02:00:37,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:37,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:37,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:37,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:37,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:37,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:37,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:37,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:37,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:37,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:37,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:37,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:00:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:37,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:37,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:37,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:37,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:00:37,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:37,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:37,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:37,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:37,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:37,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:00:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:37,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:37,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:00:37,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:37,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 02:00:37,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:37,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:37,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:37,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:37,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:37,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 02:00:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:37,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:37,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:37,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:37,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:37,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:37,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:37,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:37,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:37,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:37,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 02:00:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:37,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:37,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:37,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:37,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:00:37,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:37,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:37,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-25 02:00:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:37,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:37,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 02:00:37,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:37,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:00:37,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:37,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:00:37,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:37,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 02:00:37,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:37,669 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-09-25 02:00:37,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26516457] [2020-09-25 02:00:37,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:00:37,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 02:00:37,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875969181] [2020-09-25 02:00:37,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 02:00:37,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:37,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 02:00:37,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:00:37,677 INFO L87 Difference]: Start difference. First operand 179 states and 208 transitions. Second operand 3 states. [2020-09-25 02:00:37,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:37,696 INFO L93 Difference]: Finished difference Result 194 states and 225 transitions. [2020-09-25 02:00:37,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 02:00:37,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2020-09-25 02:00:37,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:37,699 INFO L225 Difference]: With dead ends: 194 [2020-09-25 02:00:37,699 INFO L226 Difference]: Without dead ends: 178 [2020-09-25 02:00:37,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:00:37,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-25 02:00:37,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-09-25 02:00:37,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-25 02:00:37,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 206 transitions. [2020-09-25 02:00:37,712 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 206 transitions. Word has length 118 [2020-09-25 02:00:37,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:37,713 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 206 transitions. [2020-09-25 02:00:37,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 02:00:37,713 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 206 transitions. [2020-09-25 02:00:37,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 02:00:37,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:37,715 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:37,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 02:00:37,715 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:37,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:37,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1190915480, now seen corresponding path program 1 times [2020-09-25 02:00:37,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:37,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526701191] [2020-09-25 02:00:37,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:37,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:42,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 02:00:42,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 02:00:42,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 02:00:42,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:42,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:42,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 02:00:42,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:42,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:42,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:42,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:42,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:42,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:42,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:00:42,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:42,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:42,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:00:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:42,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:42,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:42,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:42,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:42,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:42,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:42,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:42,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:42,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:42,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:00:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:42,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:42,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:00:42,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:42,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 02:00:42,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:42,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:42,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 02:00:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:42,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:42,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:42,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:42,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:00:42,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:42,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:42,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 02:00:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:42,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:42,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:42,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:42,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:00:42,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:42,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:42,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:42,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 02:00:42,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:42,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 02:00:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:42,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:42,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 02:00:42,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:42,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:00:42,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:42,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:42,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 02:00:42,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:42,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:42,968 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-09-25 02:00:42,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526701191] [2020-09-25 02:00:42,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:00:42,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:00:42,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864754212] [2020-09-25 02:00:42,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:00:42,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:42,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:00:42,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:00:42,973 INFO L87 Difference]: Start difference. First operand 178 states and 206 transitions. Second operand 6 states. [2020-09-25 02:00:43,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:43,055 INFO L93 Difference]: Finished difference Result 266 states and 309 transitions. [2020-09-25 02:00:43,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:00:43,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-09-25 02:00:43,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:43,059 INFO L225 Difference]: With dead ends: 266 [2020-09-25 02:00:43,060 INFO L226 Difference]: Without dead ends: 204 [2020-09-25 02:00:43,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:00:43,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-09-25 02:00:43,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 188. [2020-09-25 02:00:43,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-09-25 02:00:43,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 219 transitions. [2020-09-25 02:00:43,077 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 219 transitions. Word has length 120 [2020-09-25 02:00:43,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:43,078 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 219 transitions. [2020-09-25 02:00:43,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:00:43,078 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 219 transitions. [2020-09-25 02:00:43,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 02:00:43,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:43,081 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:43,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 02:00:43,082 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:43,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:43,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1788956360, now seen corresponding path program 1 times [2020-09-25 02:00:43,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:43,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33434488] [2020-09-25 02:00:43,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:43,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:43,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:43,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:43,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:43,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:48,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 02:00:48,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:00:48,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:00:48,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 02:00:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:00:48,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:48,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:48,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:48,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:48,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:48,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:48,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:48,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:48,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:48,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:48,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:48,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:00:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:48,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:48,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:48,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:48,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:48,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:48,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:48,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:48,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:48,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:48,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:00:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:48,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:48,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:00:48,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:48,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 02:00:48,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 02:00:48,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 02:00:48,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:48,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 02:00:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:48,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:48,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:48,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:48,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:48,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:00:48,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:48,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:48,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 02:00:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:48,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:48,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:48,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:48,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:00:48,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:48,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:48,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:00:48,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:48,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:48,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 02:00:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:48,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:48,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 02:00:48,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:48,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:00:48,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:48,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:48,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 02:00:48,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:48,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:00:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 02:00:48,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33434488] [2020-09-25 02:00:48,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:48,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:00:48,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214296001] [2020-09-25 02:00:48,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:00:48,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:48,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:00:48,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:00:48,353 INFO L87 Difference]: Start difference. First operand 188 states and 219 transitions. Second operand 7 states. [2020-09-25 02:00:48,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:48,511 INFO L93 Difference]: Finished difference Result 377 states and 449 transitions. [2020-09-25 02:00:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:00:48,514 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-09-25 02:00:48,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:48,517 INFO L225 Difference]: With dead ends: 377 [2020-09-25 02:00:48,517 INFO L226 Difference]: Without dead ends: 240 [2020-09-25 02:00:48,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:00:48,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-09-25 02:00:48,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 198. [2020-09-25 02:00:48,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-25 02:00:48,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 232 transitions. [2020-09-25 02:00:48,536 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 232 transitions. Word has length 120 [2020-09-25 02:00:48,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:48,537 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 232 transitions. [2020-09-25 02:00:48,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:00:48,537 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 232 transitions. [2020-09-25 02:00:48,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 02:00:48,539 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:48,539 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:48,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 02:00:48,540 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:48,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:48,540 INFO L82 PathProgramCache]: Analyzing trace with hash 495623658, now seen corresponding path program 1 times [2020-09-25 02:00:48,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:48,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000980572] [2020-09-25 02:00:48,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:48,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:49,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:53,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:53,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 02:00:53,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:00:53,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:00:53,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:53,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:53,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 02:00:53,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 02:00:53,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:53,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:53,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:53,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:53,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:53,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:53,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:53,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:53,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:53,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:53,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:53,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:53,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:00:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:53,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:53,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:53,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:53,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:53,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:53,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:53,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:53,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:53,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:53,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:53,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:00:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:53,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:53,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:53,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:00:53,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:53,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 02:00:53,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:53,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:00:53,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:53,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 02:00:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:53,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:53,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:53,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:53,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:53,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:53,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:00:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:53,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:53,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 02:00:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:53,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:53,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:53,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:53,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:53,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:53,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:53,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:53,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:00:53,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:53,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:53,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 02:00:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:53,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:53,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:53,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 02:00:53,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:53,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:00:53,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:53,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 02:00:53,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:53,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:53,857 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 02:00:53,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000980572] [2020-09-25 02:00:53,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:53,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:00:53,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260230398] [2020-09-25 02:00:53,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:00:53,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:53,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:00:53,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:00:53,860 INFO L87 Difference]: Start difference. First operand 198 states and 232 transitions. Second operand 7 states. [2020-09-25 02:00:54,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:54,036 INFO L93 Difference]: Finished difference Result 363 states and 432 transitions. [2020-09-25 02:00:54,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:00:54,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-09-25 02:00:54,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:54,038 INFO L225 Difference]: With dead ends: 363 [2020-09-25 02:00:54,038 INFO L226 Difference]: Without dead ends: 228 [2020-09-25 02:00:54,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:00:54,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-09-25 02:00:54,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 198. [2020-09-25 02:00:54,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-25 02:00:54,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 232 transitions. [2020-09-25 02:00:54,055 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 232 transitions. Word has length 120 [2020-09-25 02:00:54,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:54,056 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 232 transitions. [2020-09-25 02:00:54,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:00:54,057 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 232 transitions. [2020-09-25 02:00:54,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 02:00:54,060 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:54,060 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:54,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 02:00:54,061 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:54,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:54,061 INFO L82 PathProgramCache]: Analyzing trace with hash 63241024, now seen corresponding path program 2 times [2020-09-25 02:00:54,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:54,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526953355] [2020-09-25 02:00:54,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:54,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:54,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:54,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:54,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:54,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:59,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 02:00:59,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:00:59,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 02:00:59,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:59,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:59,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-09-25 02:00:59,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 02:00:59,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:59,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:59,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:59,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:59,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:59,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:59,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:59,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:59,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:59,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:59,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:59,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:00:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:59,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:59,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:59,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:59,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:00:59,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:59,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:59,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:59,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:00:59,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:00:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:59,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:59,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 02:00:59,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:59,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 02:00:59,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:59,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:59,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:59,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:59,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:59,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 02:00:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:59,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:59,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:59,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:59,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:59,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:59,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:59,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:59,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:59,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:59,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 02:00:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:59,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:59,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:00:59,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:59,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:59,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:59,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:59,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 02:00:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:59,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:59,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 02:00:59,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:59,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 02:00:59,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:00:59,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:59,375 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-09-25 02:00:59,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526953355] [2020-09-25 02:00:59,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:00:59,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:00:59,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969465620] [2020-09-25 02:00:59,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:00:59,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:59,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:00:59,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:00:59,378 INFO L87 Difference]: Start difference. First operand 198 states and 232 transitions. Second operand 6 states. [2020-09-25 02:00:59,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:59,487 INFO L93 Difference]: Finished difference Result 247 states and 288 transitions. [2020-09-25 02:00:59,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:00:59,487 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2020-09-25 02:00:59,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:59,489 INFO L225 Difference]: With dead ends: 247 [2020-09-25 02:00:59,489 INFO L226 Difference]: Without dead ends: 241 [2020-09-25 02:00:59,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:00:59,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-09-25 02:00:59,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 207. [2020-09-25 02:00:59,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-09-25 02:00:59,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 242 transitions. [2020-09-25 02:00:59,505 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 242 transitions. Word has length 125 [2020-09-25 02:00:59,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:59,505 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 242 transitions. [2020-09-25 02:00:59,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:00:59,506 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 242 transitions. [2020-09-25 02:00:59,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 02:00:59,507 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:59,508 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:59,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 02:00:59,508 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:59,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:59,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1176254073, now seen corresponding path program 1 times [2020-09-25 02:00:59,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:59,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053613036] [2020-09-25 02:00:59,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:59,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:00,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 02:01:00,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:00,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-09-25 02:01:00,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:00,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 02:01:00,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:00,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:00,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:00,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:00,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:00,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:00,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:00,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:00,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:00,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:00,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:00,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:00,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:01:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:00,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:00,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:01:00,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:00,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:00,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:00,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:00,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:01:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:00,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:00,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 02:01:00,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:00,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 02:01:00,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:00,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:00,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:00,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:00,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:00,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 02:01:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:00,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:00,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:01:00,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:00,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:00,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:00,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:00,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:00,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:00,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:00,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 02:01:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:00,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:00,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:01:00,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:00,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:00,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:00,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:00,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:00,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:00,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:00,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 02:01:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:00,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:00,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 02:01:00,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:00,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:01:00,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:00,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:00,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:00,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 02:01:00,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:00,528 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-09-25 02:01:00,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053613036] [2020-09-25 02:01:00,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:01:00,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:01:00,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300196333] [2020-09-25 02:01:00,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:01:00,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:00,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:01:00,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:01:00,530 INFO L87 Difference]: Start difference. First operand 207 states and 242 transitions. Second operand 6 states. [2020-09-25 02:01:00,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:00,599 INFO L93 Difference]: Finished difference Result 226 states and 262 transitions. [2020-09-25 02:01:00,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:01:00,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2020-09-25 02:01:00,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:00,603 INFO L225 Difference]: With dead ends: 226 [2020-09-25 02:01:00,603 INFO L226 Difference]: Without dead ends: 219 [2020-09-25 02:01:00,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:01:00,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-09-25 02:01:00,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2020-09-25 02:01:00,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-09-25 02:01:00,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 251 transitions. [2020-09-25 02:01:00,617 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 251 transitions. Word has length 127 [2020-09-25 02:01:00,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:00,618 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 251 transitions. [2020-09-25 02:01:00,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:01:00,618 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 251 transitions. [2020-09-25 02:01:00,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 02:01:00,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:00,621 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:00,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 02:01:00,621 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:00,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:00,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1572144423, now seen corresponding path program 1 times [2020-09-25 02:01:00,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:00,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105160298] [2020-09-25 02:01:00,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:00,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:01,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 02:01:01,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:01,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-09-25 02:01:01,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-09-25 02:01:01,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:01,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:01,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:01,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:01,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:01,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:01,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:01,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:01,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:01,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:01,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:01,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:01,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:01:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:01,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:01,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:01:01,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:01,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:01,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:01,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:01,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:01,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:01,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:01,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:01:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:01,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:01,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 02:01:01,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:01,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 02:01:01,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:01,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:01,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 02:01:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:01,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:01,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:01:01,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:01,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:01,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:01,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:01,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:01,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:01,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:01,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 02:01:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:01,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:01,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:01:01,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:01,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:01,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:01,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:01,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 02:01:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:01,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:01,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 02:01:01,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:01,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:01,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:01,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:01,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:01,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:01,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-09-25 02:01:01,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105160298] [2020-09-25 02:01:01,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:01:01,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:01:01,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357646414] [2020-09-25 02:01:01,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:01:01,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:01,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:01:01,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:01:01,503 INFO L87 Difference]: Start difference. First operand 215 states and 251 transitions. Second operand 6 states. [2020-09-25 02:01:01,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:01,548 INFO L93 Difference]: Finished difference Result 221 states and 256 transitions. [2020-09-25 02:01:01,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:01:01,549 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2020-09-25 02:01:01,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:01,550 INFO L225 Difference]: With dead ends: 221 [2020-09-25 02:01:01,550 INFO L226 Difference]: Without dead ends: 205 [2020-09-25 02:01:01,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:01:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-09-25 02:01:01,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2020-09-25 02:01:01,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-09-25 02:01:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 238 transitions. [2020-09-25 02:01:01,562 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 238 transitions. Word has length 127 [2020-09-25 02:01:01,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:01,562 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 238 transitions. [2020-09-25 02:01:01,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:01:01,563 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 238 transitions. [2020-09-25 02:01:01,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 02:01:01,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:01,565 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:01,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 02:01:01,565 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:01,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:01,565 INFO L82 PathProgramCache]: Analyzing trace with hash 210732957, now seen corresponding path program 1 times [2020-09-25 02:01:01,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:01,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112703011] [2020-09-25 02:01:01,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:01,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking...