/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/large_const.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:27:54,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:27:54,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:27:54,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:27:54,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:27:54,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:27:54,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:27:54,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:27:54,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:27:54,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:27:54,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:27:54,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:27:54,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:27:54,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:27:54,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:27:54,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:27:54,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:27:54,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:27:54,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:27:54,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:27:54,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:27:54,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:27:54,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:27:54,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:27:54,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:27:54,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:27:54,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:27:54,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:27:54,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:27:54,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:27:54,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:27:54,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:27:54,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:27:54,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:27:54,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:27:54,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:27:54,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:27:54,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:27:54,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:27:54,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:27:54,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:27:54,248 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 03:27:54,304 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:27:54,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:27:54,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:27:54,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:27:54,309 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:27:54,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:27:54,310 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:27:54,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:27:54,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:27:54,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:27:54,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:27:54,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:27:54,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:27:54,311 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:27:54,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:27:54,312 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:27:54,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:27:54,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:27:54,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:27:54,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:27:54,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:27:54,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:27:54,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:27:54,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:27:54,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:27:54,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:27:54,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:27:54,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:27:54,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:27:54,316 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:27:54,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:27:54,840 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:27:54,844 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:27:54,846 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:27:54,847 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:27:54,848 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const.i [2020-09-25 03:27:54,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cd80badd/c0204d8338c644df9d4485f10b87aa4f/FLAG949a1cbce [2020-09-25 03:27:55,396 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:27:55,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/large_const.i [2020-09-25 03:27:55,406 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cd80badd/c0204d8338c644df9d4485f10b87aa4f/FLAG949a1cbce [2020-09-25 03:27:55,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cd80badd/c0204d8338c644df9d4485f10b87aa4f [2020-09-25 03:27:55,758 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:27:55,764 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:27:55,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:27:55,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:27:55,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:27:55,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:27:55" (1/1) ... [2020-09-25 03:27:55,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4815436f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:55, skipping insertion in model container [2020-09-25 03:27:55,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:27:55" (1/1) ... [2020-09-25 03:27:55,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:27:55,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:27:56,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:27:56,100 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:27:56,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:27:56,135 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:27:56,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:56 WrapperNode [2020-09-25 03:27:56,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:27:56,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:27:56,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:27:56,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:27:56,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:56" (1/1) ... [2020-09-25 03:27:56,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:56" (1/1) ... [2020-09-25 03:27:56,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:56" (1/1) ... [2020-09-25 03:27:56,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:56" (1/1) ... [2020-09-25 03:27:56,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:56" (1/1) ... [2020-09-25 03:27:56,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:56" (1/1) ... [2020-09-25 03:27:56,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:56" (1/1) ... [2020-09-25 03:27:56,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:27:56,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:27:56,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:27:56,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:27:56,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:56" (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 03:27:56,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:27:56,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:27:56,346 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 03:27:56,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 03:27:56,346 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:27:56,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:27:56,347 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:27:56,347 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 03:27:56,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 03:27:56,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:27:56,348 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:27:56,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:27:56,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:27:56,635 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:27:56,635 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 03:27:56,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:27:56 BoogieIcfgContainer [2020-09-25 03:27:56,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:27:56,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:27:56,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:27:56,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:27:56,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:27:55" (1/3) ... [2020-09-25 03:27:56,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7aecbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:27:56, skipping insertion in model container [2020-09-25 03:27:56,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:56" (2/3) ... [2020-09-25 03:27:56,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7aecbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:27:56, skipping insertion in model container [2020-09-25 03:27:56,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:27:56" (3/3) ... [2020-09-25 03:27:56,675 INFO L109 eAbstractionObserver]: Analyzing ICFG large_const.i [2020-09-25 03:27:56,700 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:27:56,717 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:27:56,737 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:27:56,766 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:27:56,766 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:27:56,766 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:27:56,767 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:27:56,767 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:27:56,767 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:27:56,767 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:27:56,767 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:27:56,791 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-09-25 03:27:56,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 03:27:56,798 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:56,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:56,800 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:56,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:56,806 INFO L82 PathProgramCache]: Analyzing trace with hash 288343897, now seen corresponding path program 1 times [2020-09-25 03:27:56,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:56,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345001168] [2020-09-25 03:27:56,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:56,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:57,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:57,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 03:27:57,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:57,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 03:27:57,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:57,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:57,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 03:27:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:57,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:27:57,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:57,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:57,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:57,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:57,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:57,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:27:57,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:57,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:57,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:57,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:57,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:57,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:27:57,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345001168] [2020-09-25 03:27:57,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:57,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 03:27:57,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714562427] [2020-09-25 03:27:57,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 03:27:57,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:57,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 03:27:57,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 03:27:57,118 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2020-09-25 03:27:57,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:57,151 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2020-09-25 03:27:57,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 03:27:57,153 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2020-09-25 03:27:57,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:57,166 INFO L225 Difference]: With dead ends: 75 [2020-09-25 03:27:57,166 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 03:27:57,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 03:27:57,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 03:27:57,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 03:27:57,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 03:27:57,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-09-25 03:27:57,224 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 27 [2020-09-25 03:27:57,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:57,225 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-09-25 03:27:57,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 03:27:57,225 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-09-25 03:27:57,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 03:27:57,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:57,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:57,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:27:57,228 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:57,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:57,228 INFO L82 PathProgramCache]: Analyzing trace with hash 320540924, now seen corresponding path program 1 times [2020-09-25 03:27:57,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:57,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888404808] [2020-09-25 03:27:57,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:57,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:57,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:57,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 03:27:57,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:57,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 03:27:57,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:57,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:27:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 03:27:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:27:57,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:57,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:57,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:57,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:57,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:57,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:57,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:27:57,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:57,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:57,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:57,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:57,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:57,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:27:57,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888404808] [2020-09-25 03:27:57,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:57,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:27:57,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120901008] [2020-09-25 03:27:57,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:27:57,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:57,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:27:57,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:27:57,528 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 5 states. [2020-09-25 03:27:57,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:57,613 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-09-25 03:27:57,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:27:57,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-25 03:27:57,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:57,616 INFO L225 Difference]: With dead ends: 67 [2020-09-25 03:27:57,616 INFO L226 Difference]: Without dead ends: 51 [2020-09-25 03:27:57,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:27:57,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-25 03:27:57,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-09-25 03:27:57,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-25 03:27:57,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-09-25 03:27:57,626 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 27 [2020-09-25 03:27:57,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:57,626 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-09-25 03:27:57,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:27:57,627 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-09-25 03:27:57,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 03:27:57,628 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:57,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:57,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:27:57,629 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:57,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:57,629 INFO L82 PathProgramCache]: Analyzing trace with hash 751787059, now seen corresponding path program 1 times [2020-09-25 03:27:57,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:57,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796936215] [2020-09-25 03:27:57,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:57,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:57,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:57,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 03:27:57,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:57,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-25 03:27:57,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:57,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:27:57,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:27:57,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 03:27:57,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:58,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:58,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:58,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:58,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:58,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:58,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:27:58,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:58,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:58,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:58,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:58,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:58,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:27:58,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796936215] [2020-09-25 03:27:58,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:27:58,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:27:58,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919649027] [2020-09-25 03:27:58,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:27:58,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:58,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:27:58,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:27:58,087 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 7 states. [2020-09-25 03:27:58,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:58,248 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-09-25 03:27:58,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:27:58,249 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-09-25 03:27:58,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:58,251 INFO L225 Difference]: With dead ends: 88 [2020-09-25 03:27:58,251 INFO L226 Difference]: Without dead ends: 86 [2020-09-25 03:27:58,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:27:58,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-25 03:27:58,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2020-09-25 03:27:58,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 03:27:58,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2020-09-25 03:27:58,263 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 37 [2020-09-25 03:27:58,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:58,264 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2020-09-25 03:27:58,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:27:58,264 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2020-09-25 03:27:58,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 03:27:58,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:58,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:58,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:27:58,266 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:58,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:58,266 INFO L82 PathProgramCache]: Analyzing trace with hash 3796503, now seen corresponding path program 1 times [2020-09-25 03:27:58,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:58,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109422647] [2020-09-25 03:27:58,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:58,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:58,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:58,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:27:58,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:58,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 03:27:58,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:58,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:27:58,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 03:27:58,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 03:27:58,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:58,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:58,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:58,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:58,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:58,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:58,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:27:58,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:58,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:58,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:58,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:58,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:58,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:27:58,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109422647] [2020-09-25 03:27:58,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:27:58,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:27:58,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690118404] [2020-09-25 03:27:58,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:27:58,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:58,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:27:58,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:27:58,454 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 7 states. [2020-09-25 03:27:58,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:58,575 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2020-09-25 03:27:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:27:58,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-25 03:27:58,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:58,580 INFO L225 Difference]: With dead ends: 105 [2020-09-25 03:27:58,580 INFO L226 Difference]: Without dead ends: 103 [2020-09-25 03:27:58,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:27:58,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-25 03:27:58,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 85. [2020-09-25 03:27:58,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 03:27:58,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-09-25 03:27:58,594 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 38 [2020-09-25 03:27:58,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:58,594 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-09-25 03:27:58,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:27:58,595 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-09-25 03:27:58,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 03:27:58,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:58,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:58,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:27:58,597 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:58,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:58,597 INFO L82 PathProgramCache]: Analyzing trace with hash 197728887, now seen corresponding path program 1 times [2020-09-25 03:27:58,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:58,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849357833] [2020-09-25 03:27:58,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:58,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:58,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:58,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:27:58,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:58,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 03:27:58,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:58,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:27:58,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:27:58,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 03:27:58,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:58,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:58,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:58,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:58,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:58,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:58,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:27:58,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:58,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:58,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:58,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:58,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:58,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:27:58,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849357833] [2020-09-25 03:27:58,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:27:58,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:27:58,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079136148] [2020-09-25 03:27:58,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:27:58,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:58,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:27:58,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:27:58,772 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 7 states. [2020-09-25 03:27:58,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:58,878 INFO L93 Difference]: Finished difference Result 116 states and 129 transitions. [2020-09-25 03:27:58,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:27:58,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-25 03:27:58,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:58,880 INFO L225 Difference]: With dead ends: 116 [2020-09-25 03:27:58,880 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 03:27:58,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:27:58,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 03:27:58,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 97. [2020-09-25 03:27:58,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-25 03:27:58,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2020-09-25 03:27:58,893 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 38 [2020-09-25 03:27:58,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:58,894 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2020-09-25 03:27:58,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:27:58,894 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2020-09-25 03:27:58,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 03:27:58,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:58,896 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 03:27:58,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:27:58,896 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:58,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:58,897 INFO L82 PathProgramCache]: Analyzing trace with hash 88652198, now seen corresponding path program 1 times [2020-09-25 03:27:58,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:58,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686923402] [2020-09-25 03:27:58,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:58,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:58,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:59,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:59,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:59,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 03:27:59,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:27:59,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1049 [2020-09-25 03:27:59,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:27:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:27:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 03:27:59,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:00,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:00,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:00,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:00,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:00,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:00,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:00,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:00,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:00,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:00,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:00,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:00,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 03:28:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:00,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:00,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:00,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:00,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:00,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:28:00,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:00,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:00,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:00,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:00,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:00,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686923402] [2020-09-25 03:28:00,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:00,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:28:00,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268337346] [2020-09-25 03:28:00,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:28:00,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:00,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:28:00,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:28:00,065 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand 9 states. [2020-09-25 03:28:00,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:00,246 INFO L93 Difference]: Finished difference Result 129 states and 143 transitions. [2020-09-25 03:28:00,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:28:00,247 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-09-25 03:28:00,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:00,249 INFO L225 Difference]: With dead ends: 129 [2020-09-25 03:28:00,249 INFO L226 Difference]: Without dead ends: 127 [2020-09-25 03:28:00,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:28:00,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-09-25 03:28:00,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 110. [2020-09-25 03:28:00,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-25 03:28:00,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 123 transitions. [2020-09-25 03:28:00,261 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 123 transitions. Word has length 49 [2020-09-25 03:28:00,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:00,261 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 123 transitions. [2020-09-25 03:28:00,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:28:00,262 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 123 transitions. [2020-09-25 03:28:00,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 03:28:00,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:00,264 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:00,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:28:00,264 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:00,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:00,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1084443264, now seen corresponding path program 1 times [2020-09-25 03:28:00,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:00,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055512206] [2020-09-25 03:28:00,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:00,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:00,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:00,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:00,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:00,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 03:28:00,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:28:00,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-09-25 03:28:00,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:00,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:28:00,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:28:00,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:28:00,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:00,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:00,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:00,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:00,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:00,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:00,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:00,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:00,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:00,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:00,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:00,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:00,944 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:00,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055512206] [2020-09-25 03:28:00,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:00,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:28:00,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330926091] [2020-09-25 03:28:00,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:28:00,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:00,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:28:00,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:28:00,946 INFO L87 Difference]: Start difference. First operand 110 states and 123 transitions. Second operand 9 states. [2020-09-25 03:28:01,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:01,185 INFO L93 Difference]: Finished difference Result 164 states and 185 transitions. [2020-09-25 03:28:01,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:28:01,185 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-09-25 03:28:01,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:01,187 INFO L225 Difference]: With dead ends: 164 [2020-09-25 03:28:01,187 INFO L226 Difference]: Without dead ends: 162 [2020-09-25 03:28:01,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:28:01,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-25 03:28:01,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 131. [2020-09-25 03:28:01,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-09-25 03:28:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 149 transitions. [2020-09-25 03:28:01,207 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 149 transitions. Word has length 48 [2020-09-25 03:28:01,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:01,208 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 149 transitions. [2020-09-25 03:28:01,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:28:01,208 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 149 transitions. [2020-09-25 03:28:01,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 03:28:01,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:01,210 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:01,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:28:01,210 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:01,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:01,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1278375648, now seen corresponding path program 1 times [2020-09-25 03:28:01,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:01,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420453147] [2020-09-25 03:28:01,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:01,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:01,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:01,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:01,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:01,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 03:28:01,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:28:01,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 551 [2020-09-25 03:28:01,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:01,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:28:01,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:28:01,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:28:01,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:01,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:01,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:01,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:01,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:01,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:01,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:01,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:01,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:01,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:01,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:01,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:01,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420453147] [2020-09-25 03:28:01,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:01,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:28:01,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503644627] [2020-09-25 03:28:01,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:28:01,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:01,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:28:01,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:28:01,862 INFO L87 Difference]: Start difference. First operand 131 states and 149 transitions. Second operand 9 states. [2020-09-25 03:28:02,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:02,135 INFO L93 Difference]: Finished difference Result 185 states and 211 transitions. [2020-09-25 03:28:02,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:28:02,136 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-09-25 03:28:02,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:02,138 INFO L225 Difference]: With dead ends: 185 [2020-09-25 03:28:02,138 INFO L226 Difference]: Without dead ends: 183 [2020-09-25 03:28:02,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:28:02,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-25 03:28:02,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 153. [2020-09-25 03:28:02,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-25 03:28:02,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 177 transitions. [2020-09-25 03:28:02,150 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 177 transitions. Word has length 48 [2020-09-25 03:28:02,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:02,150 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 177 transitions. [2020-09-25 03:28:02,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:28:02,151 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 177 transitions. [2020-09-25 03:28:02,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 03:28:02,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:02,152 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:02,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:28:02,153 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:02,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:02,153 INFO L82 PathProgramCache]: Analyzing trace with hash -287517810, now seen corresponding path program 2 times [2020-09-25 03:28:02,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:02,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295760327] [2020-09-25 03:28:02,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:02,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:02,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:02,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:02,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:02,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 03:28:02,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:28:02,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-09-25 03:28:02,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:02,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:28:02,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:28:02,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:28:02,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:02,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:02,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:02,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:02,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:02,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:02,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:02,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:02,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:02,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:02,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:02,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:02,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295760327] [2020-09-25 03:28:02,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:02,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:28:02,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794369166] [2020-09-25 03:28:02,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:28:02,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:02,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:28:02,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:28:02,768 INFO L87 Difference]: Start difference. First operand 153 states and 177 transitions. Second operand 9 states. [2020-09-25 03:28:02,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:02,956 INFO L93 Difference]: Finished difference Result 227 states and 262 transitions. [2020-09-25 03:28:02,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:28:02,956 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-09-25 03:28:02,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:02,958 INFO L225 Difference]: With dead ends: 227 [2020-09-25 03:28:02,958 INFO L226 Difference]: Without dead ends: 225 [2020-09-25 03:28:02,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-09-25 03:28:02,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-09-25 03:28:02,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 184. [2020-09-25 03:28:02,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-09-25 03:28:02,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 215 transitions. [2020-09-25 03:28:02,970 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 215 transitions. Word has length 48 [2020-09-25 03:28:02,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:02,970 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 215 transitions. [2020-09-25 03:28:02,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:28:02,971 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 215 transitions. [2020-09-25 03:28:02,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 03:28:02,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:02,972 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:02,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:28:02,972 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:02,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:02,973 INFO L82 PathProgramCache]: Analyzing trace with hash 942147566, now seen corresponding path program 2 times [2020-09-25 03:28:02,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:02,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758601803] [2020-09-25 03:28:02,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:02,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:03,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:03,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:03,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:03,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 03:28:03,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:28:03,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-09-25 03:28:03,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:03,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:28:03,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:28:03,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:28:03,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:03,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:03,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:03,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:03,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:03,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:03,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:03,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:03,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:03,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:03,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:03,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:03,622 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:03,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758601803] [2020-09-25 03:28:03,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:03,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:28:03,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606934905] [2020-09-25 03:28:03,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:28:03,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:03,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:28:03,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:28:03,624 INFO L87 Difference]: Start difference. First operand 184 states and 215 transitions. Second operand 9 states. [2020-09-25 03:28:03,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:03,806 INFO L93 Difference]: Finished difference Result 257 states and 299 transitions. [2020-09-25 03:28:03,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:28:03,807 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-09-25 03:28:03,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:03,809 INFO L225 Difference]: With dead ends: 257 [2020-09-25 03:28:03,809 INFO L226 Difference]: Without dead ends: 255 [2020-09-25 03:28:03,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-09-25 03:28:03,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-09-25 03:28:03,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 215. [2020-09-25 03:28:03,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-09-25 03:28:03,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 253 transitions. [2020-09-25 03:28:03,820 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 253 transitions. Word has length 48 [2020-09-25 03:28:03,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:03,820 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 253 transitions. [2020-09-25 03:28:03,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:28:03,821 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 253 transitions. [2020-09-25 03:28:03,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 03:28:03,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:03,822 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 03:28:03,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:28:03,822 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:03,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:03,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1391225462, now seen corresponding path program 1 times [2020-09-25 03:28:03,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:03,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498996168] [2020-09-25 03:28:03,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:03,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:03,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:03,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:04,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:04,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 03:28:04,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:28:04,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 822 [2020-09-25 03:28:04,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:04,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:28:04,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 03:28:04,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 03:28:04,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:04,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:04,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:04,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:04,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:04,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:04,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:04,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:04,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:04,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:04,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 03:28:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:04,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:04,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:04,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:04,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:04,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:28:04,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:04,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:04,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:04,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:04,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:04,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:04,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498996168] [2020-09-25 03:28:04,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:04,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:28:04,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38148217] [2020-09-25 03:28:04,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:28:04,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:04,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:28:04,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:28:04,771 INFO L87 Difference]: Start difference. First operand 215 states and 253 transitions. Second operand 9 states. [2020-09-25 03:28:04,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:04,958 INFO L93 Difference]: Finished difference Result 245 states and 283 transitions. [2020-09-25 03:28:04,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:28:04,959 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-09-25 03:28:04,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:04,969 INFO L225 Difference]: With dead ends: 245 [2020-09-25 03:28:04,970 INFO L226 Difference]: Without dead ends: 243 [2020-09-25 03:28:04,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:28:04,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-09-25 03:28:04,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 215. [2020-09-25 03:28:04,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-09-25 03:28:04,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 253 transitions. [2020-09-25 03:28:04,984 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 253 transitions. Word has length 50 [2020-09-25 03:28:04,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:04,985 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 253 transitions. [2020-09-25 03:28:04,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:28:04,985 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 253 transitions. [2020-09-25 03:28:04,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 03:28:04,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:04,986 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:04,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 03:28:04,987 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:04,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:04,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1955950980, now seen corresponding path program 1 times [2020-09-25 03:28:04,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:04,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437696354] [2020-09-25 03:28:04,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:05,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:05,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 03:28:05,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:28:05,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-09-25 03:28:05,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:05,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:28:05,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:28:05,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:28:05,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:05,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:05,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:05,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:05,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:05,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:05,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:05,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:05,578 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:05,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437696354] [2020-09-25 03:28:05,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:05,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:28:05,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88849967] [2020-09-25 03:28:05,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:28:05,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:05,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:28:05,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:28:05,581 INFO L87 Difference]: Start difference. First operand 215 states and 253 transitions. Second operand 9 states. [2020-09-25 03:28:05,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:05,754 INFO L93 Difference]: Finished difference Result 286 states and 334 transitions. [2020-09-25 03:28:05,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:28:05,755 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-09-25 03:28:05,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:05,759 INFO L225 Difference]: With dead ends: 286 [2020-09-25 03:28:05,759 INFO L226 Difference]: Without dead ends: 284 [2020-09-25 03:28:05,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-09-25 03:28:05,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-09-25 03:28:05,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 227. [2020-09-25 03:28:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-09-25 03:28:05,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 269 transitions. [2020-09-25 03:28:05,776 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 269 transitions. Word has length 49 [2020-09-25 03:28:05,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:05,776 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 269 transitions. [2020-09-25 03:28:05,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:28:05,776 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 269 transitions. [2020-09-25 03:28:05,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 03:28:05,778 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:05,778 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 03:28:05,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 03:28:05,778 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:05,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:05,779 INFO L82 PathProgramCache]: Analyzing trace with hash -798805526, now seen corresponding path program 1 times [2020-09-25 03:28:05,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:05,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998633214] [2020-09-25 03:28:05,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:05,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:06,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:06,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 03:28:06,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:28:06,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-09-25 03:28:06,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:06,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:28:06,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:28:06,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 03:28:06,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:06,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:06,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:06,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:06,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:06,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:06,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:06,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:06,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:06,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:06,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:06,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:06,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 03:28:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:06,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:06,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:06,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:06,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:06,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:28:06,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:06,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:06,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:06,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:06,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:06,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998633214] [2020-09-25 03:28:06,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:06,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:28:06,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716442018] [2020-09-25 03:28:06,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:28:06,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:06,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:28:06,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:28:06,774 INFO L87 Difference]: Start difference. First operand 227 states and 269 transitions. Second operand 9 states. [2020-09-25 03:28:06,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:06,968 INFO L93 Difference]: Finished difference Result 268 states and 313 transitions. [2020-09-25 03:28:06,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:28:06,968 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-09-25 03:28:06,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:06,970 INFO L225 Difference]: With dead ends: 268 [2020-09-25 03:28:06,970 INFO L226 Difference]: Without dead ends: 266 [2020-09-25 03:28:06,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:28:06,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-25 03:28:06,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 238. [2020-09-25 03:28:06,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-09-25 03:28:06,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 283 transitions. [2020-09-25 03:28:06,990 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 283 transitions. Word has length 50 [2020-09-25 03:28:06,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:06,991 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 283 transitions. [2020-09-25 03:28:06,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:28:06,991 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 283 transitions. [2020-09-25 03:28:06,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 03:28:06,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:06,992 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:06,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 03:28:06,992 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:06,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:06,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1610004924, now seen corresponding path program 2 times [2020-09-25 03:28:06,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:06,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42020642] [2020-09-25 03:28:06,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:07,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:07,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:07,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:07,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:07,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 03:28:07,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:28:07,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-09-25 03:28:07,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:07,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:28:07,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:28:07,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:28:07,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:07,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:07,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:07,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:07,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:07,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:07,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:07,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:07,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:07,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:07,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:07,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:07,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42020642] [2020-09-25 03:28:07,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:07,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:28:07,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373371579] [2020-09-25 03:28:07,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:28:07,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:07,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:28:07,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:28:07,546 INFO L87 Difference]: Start difference. First operand 238 states and 283 transitions. Second operand 9 states. [2020-09-25 03:28:07,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:07,742 INFO L93 Difference]: Finished difference Result 302 states and 354 transitions. [2020-09-25 03:28:07,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:28:07,743 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-09-25 03:28:07,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:07,745 INFO L225 Difference]: With dead ends: 302 [2020-09-25 03:28:07,745 INFO L226 Difference]: Without dead ends: 300 [2020-09-25 03:28:07,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:28:07,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-09-25 03:28:07,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 260. [2020-09-25 03:28:07,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-09-25 03:28:07,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 311 transitions. [2020-09-25 03:28:07,757 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 311 transitions. Word has length 49 [2020-09-25 03:28:07,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:07,758 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 311 transitions. [2020-09-25 03:28:07,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:28:07,758 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 311 transitions. [2020-09-25 03:28:07,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 03:28:07,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:07,759 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:07,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 03:28:07,759 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:07,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:07,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1367702887, now seen corresponding path program 2 times [2020-09-25 03:28:07,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:07,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410096511] [2020-09-25 03:28:07,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:07,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:07,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:07,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:08,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:08,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:09,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:09,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 03:28:09,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:28:09,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1974 [2020-09-25 03:28:09,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:09,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:28:09,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:28:09,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 03:28:09,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:09,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:09,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:09,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:09,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:09,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:09,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:09,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:09,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:09,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:09,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:09,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:09,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 03:28:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:09,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:09,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:09,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:09,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:09,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:28:09,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:09,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:09,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:09,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:09,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:09,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 03:28:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:09,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:09,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:09,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:09,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:28:09,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:09,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 03:28:09,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410096511] [2020-09-25 03:28:09,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:09,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:28:09,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654926972] [2020-09-25 03:28:09,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:28:09,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:09,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:28:09,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:28:09,883 INFO L87 Difference]: Start difference. First operand 260 states and 311 transitions. Second operand 11 states. [2020-09-25 03:28:10,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:10,134 INFO L93 Difference]: Finished difference Result 301 states and 352 transitions. [2020-09-25 03:28:10,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 03:28:10,134 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2020-09-25 03:28:10,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:10,136 INFO L225 Difference]: With dead ends: 301 [2020-09-25 03:28:10,136 INFO L226 Difference]: Without dead ends: 299 [2020-09-25 03:28:10,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-09-25 03:28:10,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-09-25 03:28:10,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 273. [2020-09-25 03:28:10,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-09-25 03:28:10,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 324 transitions. [2020-09-25 03:28:10,154 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 324 transitions. Word has length 61 [2020-09-25 03:28:10,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:10,154 INFO L479 AbstractCegarLoop]: Abstraction has 273 states and 324 transitions. [2020-09-25 03:28:10,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:28:10,155 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 324 transitions. [2020-09-25 03:28:10,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 03:28:10,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:10,161 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:10,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 03:28:10,162 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:10,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:10,162 INFO L82 PathProgramCache]: Analyzing trace with hash -2112840589, now seen corresponding path program 1 times [2020-09-25 03:28:10,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:10,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931394450] [2020-09-25 03:28:10,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:10,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:10,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:10,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:10,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:10,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:11,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:11,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 03:28:11,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:28:11,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1815 [2020-09-25 03:28:11,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:11,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:28:11,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:28:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 03:28:11,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:12,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:12,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:12,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:12,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:12,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:12,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:12,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:12,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:12,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:12,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:12,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:12,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 03:28:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:12,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:12,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:12,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:12,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:12,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:28:12,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:12,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:12,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:12,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:12,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:12,092 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:12,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931394450] [2020-09-25 03:28:12,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:12,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:28:12,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413553169] [2020-09-25 03:28:12,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:28:12,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:12,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:28:12,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:28:12,094 INFO L87 Difference]: Start difference. First operand 273 states and 324 transitions. Second operand 11 states. [2020-09-25 03:28:12,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:12,435 INFO L93 Difference]: Finished difference Result 315 states and 368 transitions. [2020-09-25 03:28:12,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:28:12,436 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-25 03:28:12,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:12,438 INFO L225 Difference]: With dead ends: 315 [2020-09-25 03:28:12,440 INFO L226 Difference]: Without dead ends: 313 [2020-09-25 03:28:12,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2020-09-25 03:28:12,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-09-25 03:28:12,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 273. [2020-09-25 03:28:12,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-09-25 03:28:12,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 324 transitions. [2020-09-25 03:28:12,455 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 324 transitions. Word has length 60 [2020-09-25 03:28:12,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:12,456 INFO L479 AbstractCegarLoop]: Abstraction has 273 states and 324 transitions. [2020-09-25 03:28:12,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:28:12,456 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 324 transitions. [2020-09-25 03:28:12,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 03:28:12,457 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:12,457 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 03:28:12,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 03:28:12,458 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:12,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:12,458 INFO L82 PathProgramCache]: Analyzing trace with hash 320690707, now seen corresponding path program 3 times [2020-09-25 03:28:12,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:12,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404581529] [2020-09-25 03:28:12,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:12,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:12,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:12,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:12,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:12,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:12,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:12,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:14,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:14,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:28:14,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:28:14,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1771 [2020-09-25 03:28:14,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:14,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:28:14,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:28:14,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 03:28:14,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:14,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:14,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:14,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:14,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:14,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:14,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:14,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:14,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:14,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:14,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:14,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:14,335 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:14,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404581529] [2020-09-25 03:28:14,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:14,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:28:14,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237740534] [2020-09-25 03:28:14,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:28:14,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:14,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:28:14,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:28:14,337 INFO L87 Difference]: Start difference. First operand 273 states and 324 transitions. Second operand 10 states. [2020-09-25 03:28:14,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:14,736 INFO L93 Difference]: Finished difference Result 408 states and 479 transitions. [2020-09-25 03:28:14,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:28:14,736 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-09-25 03:28:14,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:14,739 INFO L225 Difference]: With dead ends: 408 [2020-09-25 03:28:14,739 INFO L226 Difference]: Without dead ends: 406 [2020-09-25 03:28:14,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:28:14,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-09-25 03:28:14,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 305. [2020-09-25 03:28:14,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-09-25 03:28:14,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 364 transitions. [2020-09-25 03:28:14,755 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 364 transitions. Word has length 59 [2020-09-25 03:28:14,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:14,755 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 364 transitions. [2020-09-25 03:28:14,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:28:14,755 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 364 transitions. [2020-09-25 03:28:14,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 03:28:14,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:14,756 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 03:28:14,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 03:28:14,757 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:14,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:14,757 INFO L82 PathProgramCache]: Analyzing trace with hash 514623091, now seen corresponding path program 1 times [2020-09-25 03:28:14,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:14,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125199353] [2020-09-25 03:28:14,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:14,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:14,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:14,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:14,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:14,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:14,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:14,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:16,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:16,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:28:16,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:28:16,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1908 [2020-09-25 03:28:16,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:16,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:28:16,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:28:16,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 03:28:16,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:16,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:16,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:16,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:16,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:16,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:16,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:28:16,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:16,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:16,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:16,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:16,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:16,789 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:16,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125199353] [2020-09-25 03:28:16,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:16,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:28:16,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727763759] [2020-09-25 03:28:16,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:28:16,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:16,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:28:16,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:28:16,802 INFO L87 Difference]: Start difference. First operand 305 states and 364 transitions. Second operand 11 states. [2020-09-25 03:28:17,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:17,255 INFO L93 Difference]: Finished difference Result 428 states and 508 transitions. [2020-09-25 03:28:17,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 03:28:17,256 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-09-25 03:28:17,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:17,259 INFO L225 Difference]: With dead ends: 428 [2020-09-25 03:28:17,259 INFO L226 Difference]: Without dead ends: 426 [2020-09-25 03:28:17,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:28:17,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-09-25 03:28:17,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 339. [2020-09-25 03:28:17,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-09-25 03:28:17,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 407 transitions. [2020-09-25 03:28:17,296 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 407 transitions. Word has length 59 [2020-09-25 03:28:17,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:17,296 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 407 transitions. [2020-09-25 03:28:17,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:28:17,297 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 407 transitions. [2020-09-25 03:28:17,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 03:28:17,298 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:17,299 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:17,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 03:28:17,299 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:17,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:17,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1520420653, now seen corresponding path program 1 times [2020-09-25 03:28:17,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:17,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743971774] [2020-09-25 03:28:17,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:17,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:17,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:17,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:17,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:17,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:19,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:19,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 03:28:19,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:28:19,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1799 [2020-09-25 03:28:19,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:19,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:28:19,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:28:19,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 03:28:19,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:19,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:19,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:19,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:19,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:19,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:19,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:19,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:19,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:19,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:19,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:19,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:19,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 03:28:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:19,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:19,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:19,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:19,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:19,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:28:19,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:19,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:19,239 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:19,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743971774] [2020-09-25 03:28:19,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:19,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:28:19,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323743559] [2020-09-25 03:28:19,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:28:19,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:19,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:28:19,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:28:19,241 INFO L87 Difference]: Start difference. First operand 339 states and 407 transitions. Second operand 11 states. [2020-09-25 03:28:19,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:19,616 INFO L93 Difference]: Finished difference Result 401 states and 476 transitions. [2020-09-25 03:28:19,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:28:19,616 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-25 03:28:19,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:19,619 INFO L225 Difference]: With dead ends: 401 [2020-09-25 03:28:19,619 INFO L226 Difference]: Without dead ends: 399 [2020-09-25 03:28:19,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2020-09-25 03:28:19,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-09-25 03:28:19,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 360. [2020-09-25 03:28:19,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-09-25 03:28:19,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 433 transitions. [2020-09-25 03:28:19,637 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 433 transitions. Word has length 60 [2020-09-25 03:28:19,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:19,638 INFO L479 AbstractCegarLoop]: Abstraction has 360 states and 433 transitions. [2020-09-25 03:28:19,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:28:19,638 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 433 transitions. [2020-09-25 03:28:19,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 03:28:19,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:19,639 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 03:28:19,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 03:28:19,639 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:19,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:19,640 INFO L82 PathProgramCache]: Analyzing trace with hash -214388301, now seen corresponding path program 2 times [2020-09-25 03:28:19,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:19,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513679138] [2020-09-25 03:28:19,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:19,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:19,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:19,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:19,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:19,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:19,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:19,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:21,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:21,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:28:21,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:28:21,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1721 [2020-09-25 03:28:21,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:21,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:28:21,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:28:21,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 03:28:21,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:21,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:21,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:21,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:21,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:21,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:21,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:21,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:21,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:21,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:21,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:21,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:21,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513679138] [2020-09-25 03:28:21,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:21,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:28:21,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342500474] [2020-09-25 03:28:21,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:28:21,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:21,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:28:21,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:28:21,476 INFO L87 Difference]: Start difference. First operand 360 states and 433 transitions. Second operand 11 states. [2020-09-25 03:28:21,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:21,907 INFO L93 Difference]: Finished difference Result 522 states and 625 transitions. [2020-09-25 03:28:21,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:28:21,907 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-09-25 03:28:21,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:21,910 INFO L225 Difference]: With dead ends: 522 [2020-09-25 03:28:21,910 INFO L226 Difference]: Without dead ends: 520 [2020-09-25 03:28:21,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2020-09-25 03:28:21,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-09-25 03:28:21,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 445. [2020-09-25 03:28:21,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-09-25 03:28:21,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 539 transitions. [2020-09-25 03:28:21,936 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 539 transitions. Word has length 59 [2020-09-25 03:28:21,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:21,936 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 539 transitions. [2020-09-25 03:28:21,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:28:21,936 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 539 transitions. [2020-09-25 03:28:21,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 03:28:21,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:21,938 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 03:28:21,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 03:28:21,938 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:21,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:21,940 INFO L82 PathProgramCache]: Analyzing trace with hash -20455917, now seen corresponding path program 3 times [2020-09-25 03:28:21,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:21,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117863064] [2020-09-25 03:28:21,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:21,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:21,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:22,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:22,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:22,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:22,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:22,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:23,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:23,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:28:23,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:28:23,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1710 [2020-09-25 03:28:23,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:23,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:28:23,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:28:23,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 03:28:23,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:23,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:23,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:23,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:23,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:23,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:23,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:23,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:23,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:23,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:23,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:23,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:23,763 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:23,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117863064] [2020-09-25 03:28:23,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:23,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:28:23,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691405466] [2020-09-25 03:28:23,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:28:23,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:23,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:28:23,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:28:23,765 INFO L87 Difference]: Start difference. First operand 445 states and 539 transitions. Second operand 10 states. [2020-09-25 03:28:24,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:24,139 INFO L93 Difference]: Finished difference Result 582 states and 697 transitions. [2020-09-25 03:28:24,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:28:24,140 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-09-25 03:28:24,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:24,143 INFO L225 Difference]: With dead ends: 582 [2020-09-25 03:28:24,144 INFO L226 Difference]: Without dead ends: 580 [2020-09-25 03:28:24,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:28:24,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-09-25 03:28:24,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 478. [2020-09-25 03:28:24,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-09-25 03:28:24,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 581 transitions. [2020-09-25 03:28:24,174 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 581 transitions. Word has length 59 [2020-09-25 03:28:24,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:24,174 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 581 transitions. [2020-09-25 03:28:24,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:28:24,175 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 581 transitions. [2020-09-25 03:28:24,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 03:28:24,176 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:24,176 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:24,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-25 03:28:24,177 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:24,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:24,177 INFO L82 PathProgramCache]: Analyzing trace with hash -865140607, now seen corresponding path program 2 times [2020-09-25 03:28:24,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:24,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031459008] [2020-09-25 03:28:24,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:24,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:24,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:24,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:24,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:24,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:25,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:25,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 03:28:25,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:28:25,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1716 [2020-09-25 03:28:25,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:28:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:28:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 03:28:25,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:26,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:26,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:26,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:26,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:26,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:26,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:26,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:26,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:26,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:26,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:26,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:26,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 03:28:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:26,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:26,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:26,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:26,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:26,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:28:26,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:26,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:26,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:26,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:26,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:26,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031459008] [2020-09-25 03:28:26,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:26,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:28:26,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623795498] [2020-09-25 03:28:26,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:28:26,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:26,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:28:26,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:28:26,039 INFO L87 Difference]: Start difference. First operand 478 states and 581 transitions. Second operand 11 states. [2020-09-25 03:28:26,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:26,381 INFO L93 Difference]: Finished difference Result 549 states and 657 transitions. [2020-09-25 03:28:26,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 03:28:26,384 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-25 03:28:26,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:26,387 INFO L225 Difference]: With dead ends: 549 [2020-09-25 03:28:26,387 INFO L226 Difference]: Without dead ends: 547 [2020-09-25 03:28:26,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:28:26,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2020-09-25 03:28:26,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 500. [2020-09-25 03:28:26,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2020-09-25 03:28:26,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 604 transitions. [2020-09-25 03:28:26,416 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 604 transitions. Word has length 60 [2020-09-25 03:28:26,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:26,417 INFO L479 AbstractCegarLoop]: Abstraction has 500 states and 604 transitions. [2020-09-25 03:28:26,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:28:26,417 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 604 transitions. [2020-09-25 03:28:26,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 03:28:26,420 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:26,420 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 03:28:26,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-25 03:28:26,421 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:26,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:26,421 INFO L82 PathProgramCache]: Analyzing trace with hash -193250235, now seen corresponding path program 4 times [2020-09-25 03:28:26,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:26,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006001061] [2020-09-25 03:28:26,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:26,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:26,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:26,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:26,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:26,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:26,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:26,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:28,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:28,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:28:28,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:28:28,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1771 [2020-09-25 03:28:28,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:28,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:28:28,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:28:28,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 03:28:28,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:28,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:28,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:28,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:28,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:28,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:28,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:28,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:28,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:28,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:28,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:28,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:28,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006001061] [2020-09-25 03:28:28,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:28,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:28:28,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179039349] [2020-09-25 03:28:28,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:28:28,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:28,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:28:28,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:28:28,295 INFO L87 Difference]: Start difference. First operand 500 states and 604 transitions. Second operand 10 states. [2020-09-25 03:28:28,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:28,597 INFO L93 Difference]: Finished difference Result 724 states and 861 transitions. [2020-09-25 03:28:28,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:28:28,598 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-09-25 03:28:28,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:28,601 INFO L225 Difference]: With dead ends: 724 [2020-09-25 03:28:28,601 INFO L226 Difference]: Without dead ends: 722 [2020-09-25 03:28:28,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:28:28,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2020-09-25 03:28:28,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 552. [2020-09-25 03:28:28,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-09-25 03:28:28,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 668 transitions. [2020-09-25 03:28:28,631 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 668 transitions. Word has length 59 [2020-09-25 03:28:28,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:28,631 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 668 transitions. [2020-09-25 03:28:28,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:28:28,631 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 668 transitions. [2020-09-25 03:28:28,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 03:28:28,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:28,632 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 03:28:28,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-25 03:28:28,633 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:28,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:28,633 INFO L82 PathProgramCache]: Analyzing trace with hash 682149, now seen corresponding path program 3 times [2020-09-25 03:28:28,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:28,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026025672] [2020-09-25 03:28:28,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:28,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:28,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:28,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:28,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:28,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:28,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:28,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:30,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:30,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:28:30,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:28:30,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1683 [2020-09-25 03:28:30,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:28:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:28:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 03:28:30,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:30,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:30,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:30,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:30,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:30,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:30,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:30,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:30,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:30,443 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:30,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026025672] [2020-09-25 03:28:30,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:30,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:28:30,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129775194] [2020-09-25 03:28:30,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:28:30,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:30,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:28:30,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:28:30,445 INFO L87 Difference]: Start difference. First operand 552 states and 668 transitions. Second operand 11 states. [2020-09-25 03:28:30,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:30,842 INFO L93 Difference]: Finished difference Result 729 states and 875 transitions. [2020-09-25 03:28:30,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 03:28:30,843 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-09-25 03:28:30,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:30,846 INFO L225 Difference]: With dead ends: 729 [2020-09-25 03:28:30,847 INFO L226 Difference]: Without dead ends: 727 [2020-09-25 03:28:30,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:28:30,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-09-25 03:28:30,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 638. [2020-09-25 03:28:30,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2020-09-25 03:28:30,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 776 transitions. [2020-09-25 03:28:30,893 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 776 transitions. Word has length 59 [2020-09-25 03:28:30,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:30,894 INFO L479 AbstractCegarLoop]: Abstraction has 638 states and 776 transitions. [2020-09-25 03:28:30,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:28:30,894 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 776 transitions. [2020-09-25 03:28:30,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 03:28:30,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:30,895 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 03:28:30,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-25 03:28:30,896 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:30,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:30,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1565211309, now seen corresponding path program 5 times [2020-09-25 03:28:30,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:30,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227911421] [2020-09-25 03:28:30,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:30,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:30,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:30,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:30,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:31,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:31,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:31,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:32,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:32,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:28:32,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:28:32,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1650 [2020-09-25 03:28:32,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:32,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:28:32,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:28:32,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 03:28:32,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:32,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:32,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:32,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:32,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:32,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:32,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:32,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:32,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:32,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:32,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:32,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:32,654 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:32,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227911421] [2020-09-25 03:28:32,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:32,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:28:32,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2668169] [2020-09-25 03:28:32,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:28:32,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:32,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:28:32,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:28:32,656 INFO L87 Difference]: Start difference. First operand 638 states and 776 transitions. Second operand 10 states. [2020-09-25 03:28:33,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:33,052 INFO L93 Difference]: Finished difference Result 801 states and 958 transitions. [2020-09-25 03:28:33,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 03:28:33,053 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-09-25 03:28:33,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:33,060 INFO L225 Difference]: With dead ends: 801 [2020-09-25 03:28:33,060 INFO L226 Difference]: Without dead ends: 799 [2020-09-25 03:28:33,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:28:33,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2020-09-25 03:28:33,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 670. [2020-09-25 03:28:33,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2020-09-25 03:28:33,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 816 transitions. [2020-09-25 03:28:33,118 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 816 transitions. Word has length 59 [2020-09-25 03:28:33,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:33,119 INFO L479 AbstractCegarLoop]: Abstraction has 670 states and 816 transitions. [2020-09-25 03:28:33,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:28:33,119 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 816 transitions. [2020-09-25 03:28:33,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 03:28:33,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:33,120 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 03:28:33,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-25 03:28:33,121 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:33,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:33,121 INFO L82 PathProgramCache]: Analyzing trace with hash -335545933, now seen corresponding path program 4 times [2020-09-25 03:28:33,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:33,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879748981] [2020-09-25 03:28:33,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:33,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:33,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:33,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:33,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:33,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:33,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:33,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:34,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:34,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:28:34,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:28:34,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1673 [2020-09-25 03:28:34,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:34,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:28:34,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:28:34,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 03:28:34,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:34,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:34,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:34,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:34,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:34,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:34,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:34,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:34,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:34,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:34,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:34,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:34,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879748981] [2020-09-25 03:28:34,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:34,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:28:34,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540362005] [2020-09-25 03:28:34,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:28:34,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:34,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:28:34,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:28:34,912 INFO L87 Difference]: Start difference. First operand 670 states and 816 transitions. Second operand 11 states. [2020-09-25 03:28:35,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:35,274 INFO L93 Difference]: Finished difference Result 865 states and 1047 transitions. [2020-09-25 03:28:35,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:28:35,275 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-09-25 03:28:35,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:35,279 INFO L225 Difference]: With dead ends: 865 [2020-09-25 03:28:35,279 INFO L226 Difference]: Without dead ends: 863 [2020-09-25 03:28:35,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:28:35,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-09-25 03:28:35,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 755. [2020-09-25 03:28:35,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 755 states. [2020-09-25 03:28:35,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 921 transitions. [2020-09-25 03:28:35,314 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 921 transitions. Word has length 59 [2020-09-25 03:28:35,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:35,314 INFO L479 AbstractCegarLoop]: Abstraction has 755 states and 921 transitions. [2020-09-25 03:28:35,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:28:35,314 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 921 transitions. [2020-09-25 03:28:35,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 03:28:35,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:35,316 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:35,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-25 03:28:35,316 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:35,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:35,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1951488799, now seen corresponding path program 2 times [2020-09-25 03:28:35,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:35,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17748011] [2020-09-25 03:28:35,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:35,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:35,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:35,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:35,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:36,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:36,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 03:28:36,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:28:36,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1657 [2020-09-25 03:28:36,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:36,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:28:36,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:28:36,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 03:28:36,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:37,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:37,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:37,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:37,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:37,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:37,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:37,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:37,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:37,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:37,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:37,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:37,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 03:28:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:37,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:37,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:37,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:37,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:37,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:28:37,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:37,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:37,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:37,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:37,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:37,100 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:37,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17748011] [2020-09-25 03:28:37,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:37,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:28:37,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785860996] [2020-09-25 03:28:37,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:28:37,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:37,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:28:37,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:28:37,102 INFO L87 Difference]: Start difference. First operand 755 states and 921 transitions. Second operand 11 states. [2020-09-25 03:28:37,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:37,500 INFO L93 Difference]: Finished difference Result 825 states and 996 transitions. [2020-09-25 03:28:37,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 03:28:37,501 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-25 03:28:37,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:37,505 INFO L225 Difference]: With dead ends: 825 [2020-09-25 03:28:37,506 INFO L226 Difference]: Without dead ends: 823 [2020-09-25 03:28:37,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:28:37,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-09-25 03:28:37,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 755. [2020-09-25 03:28:37,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 755 states. [2020-09-25 03:28:37,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 921 transitions. [2020-09-25 03:28:37,556 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 921 transitions. Word has length 60 [2020-09-25 03:28:37,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:37,557 INFO L479 AbstractCegarLoop]: Abstraction has 755 states and 921 transitions. [2020-09-25 03:28:37,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:28:37,557 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 921 transitions. [2020-09-25 03:28:37,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 03:28:37,558 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:37,558 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 03:28:37,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-09-25 03:28:37,559 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:37,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:37,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1988463589, now seen corresponding path program 5 times [2020-09-25 03:28:37,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:37,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531350880] [2020-09-25 03:28:37,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:37,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:37,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:37,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:37,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:37,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:37,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:37,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:39,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:39,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:28:39,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:28:39,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1630 [2020-09-25 03:28:39,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:39,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:28:39,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:28:39,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 03:28:39,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:39,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:39,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:39,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:39,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:39,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:39,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:39,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:39,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:39,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:39,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:39,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:39,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531350880] [2020-09-25 03:28:39,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:39,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:28:39,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220811971] [2020-09-25 03:28:39,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:28:39,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:39,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:28:39,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:28:39,323 INFO L87 Difference]: Start difference. First operand 755 states and 921 transitions. Second operand 11 states. [2020-09-25 03:28:39,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:39,645 INFO L93 Difference]: Finished difference Result 907 states and 1099 transitions. [2020-09-25 03:28:39,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:28:39,645 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-09-25 03:28:39,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:39,651 INFO L225 Difference]: With dead ends: 907 [2020-09-25 03:28:39,651 INFO L226 Difference]: Without dead ends: 905 [2020-09-25 03:28:39,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:28:39,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2020-09-25 03:28:39,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 821. [2020-09-25 03:28:39,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-09-25 03:28:39,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1003 transitions. [2020-09-25 03:28:39,695 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1003 transitions. Word has length 59 [2020-09-25 03:28:39,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:39,696 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 1003 transitions. [2020-09-25 03:28:39,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:28:39,697 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1003 transitions. [2020-09-25 03:28:39,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 03:28:39,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:39,698 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 03:28:39,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-09-25 03:28:39,698 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:39,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:39,699 INFO L82 PathProgramCache]: Analyzing trace with hash -2112571323, now seen corresponding path program 4 times [2020-09-25 03:28:39,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:39,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784718723] [2020-09-25 03:28:39,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:39,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:39,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:39,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:39,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:39,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:39,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:39,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:41,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:41,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:28:41,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:28:41,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1616 [2020-09-25 03:28:41,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:28:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:28:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 03:28:41,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:41,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:41,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:41,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:41,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:41,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:41,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:41,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:41,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:41,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:41,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:41,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:41,419 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:41,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784718723] [2020-09-25 03:28:41,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:41,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:28:41,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069825469] [2020-09-25 03:28:41,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:28:41,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:41,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:28:41,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:28:41,420 INFO L87 Difference]: Start difference. First operand 821 states and 1003 transitions. Second operand 10 states. [2020-09-25 03:28:41,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:41,807 INFO L93 Difference]: Finished difference Result 1082 states and 1306 transitions. [2020-09-25 03:28:41,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:28:41,807 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-09-25 03:28:41,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:41,813 INFO L225 Difference]: With dead ends: 1082 [2020-09-25 03:28:41,813 INFO L226 Difference]: Without dead ends: 1080 [2020-09-25 03:28:41,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:28:41,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2020-09-25 03:28:41,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 873. [2020-09-25 03:28:41,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 873 states. [2020-09-25 03:28:41,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1067 transitions. [2020-09-25 03:28:41,855 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1067 transitions. Word has length 59 [2020-09-25 03:28:41,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:41,855 INFO L479 AbstractCegarLoop]: Abstraction has 873 states and 1067 transitions. [2020-09-25 03:28:41,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:28:41,856 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1067 transitions. [2020-09-25 03:28:41,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 03:28:41,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:41,857 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 03:28:41,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-25 03:28:41,858 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:41,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:41,858 INFO L82 PathProgramCache]: Analyzing trace with hash 616502515, now seen corresponding path program 6 times [2020-09-25 03:28:41,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:41,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843174979] [2020-09-25 03:28:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:41,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:41,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:41,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:41,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:42,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:42,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:42,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:43,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:43,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:28:43,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:28:43,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1665 [2020-09-25 03:28:43,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:43,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:28:43,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:28:43,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 03:28:43,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:43,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:43,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:43,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:43,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:43,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:43,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:43,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:43,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:43,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:43,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:43,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:43,635 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:43,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843174979] [2020-09-25 03:28:43,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:43,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:28:43,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064707599] [2020-09-25 03:28:43,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:28:43,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:43,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:28:43,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:28:43,637 INFO L87 Difference]: Start difference. First operand 873 states and 1067 transitions. Second operand 11 states. [2020-09-25 03:28:44,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:44,146 INFO L93 Difference]: Finished difference Result 1095 states and 1329 transitions. [2020-09-25 03:28:44,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 03:28:44,147 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-09-25 03:28:44,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:44,152 INFO L225 Difference]: With dead ends: 1095 [2020-09-25 03:28:44,152 INFO L226 Difference]: Without dead ends: 1093 [2020-09-25 03:28:44,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-09-25 03:28:44,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2020-09-25 03:28:44,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 970. [2020-09-25 03:28:44,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-09-25 03:28:44,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1189 transitions. [2020-09-25 03:28:44,197 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1189 transitions. Word has length 59 [2020-09-25 03:28:44,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:44,197 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 1189 transitions. [2020-09-25 03:28:44,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:28:44,197 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1189 transitions. [2020-09-25 03:28:44,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 03:28:44,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:44,199 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 03:28:44,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-25 03:28:44,199 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:44,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:44,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1846167891, now seen corresponding path program 5 times [2020-09-25 03:28:44,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:44,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737906640] [2020-09-25 03:28:44,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:44,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:44,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:44,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:44,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:44,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:44,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:44,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:45,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:45,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:28:45,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:28:45,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1486 [2020-09-25 03:28:45,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:45,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:28:45,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:28:45,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 03:28:45,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:45,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:45,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:45,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:45,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:45,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:45,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:45,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:45,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:45,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:45,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:45,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:45,785 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:45,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737906640] [2020-09-25 03:28:45,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:45,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:28:45,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384653964] [2020-09-25 03:28:45,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:28:45,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:45,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:28:45,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:28:45,786 INFO L87 Difference]: Start difference. First operand 970 states and 1189 transitions. Second operand 10 states. [2020-09-25 03:28:46,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:46,184 INFO L93 Difference]: Finished difference Result 1170 states and 1417 transitions. [2020-09-25 03:28:46,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 03:28:46,185 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-09-25 03:28:46,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:46,192 INFO L225 Difference]: With dead ends: 1170 [2020-09-25 03:28:46,192 INFO L226 Difference]: Without dead ends: 1168 [2020-09-25 03:28:46,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:28:46,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2020-09-25 03:28:46,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1002. [2020-09-25 03:28:46,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-09-25 03:28:46,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1229 transitions. [2020-09-25 03:28:46,245 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1229 transitions. Word has length 59 [2020-09-25 03:28:46,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:46,246 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1229 transitions. [2020-09-25 03:28:46,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:28:46,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1229 transitions. [2020-09-25 03:28:46,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 03:28:46,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:46,249 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:46,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-25 03:28:46,249 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:46,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:46,250 INFO L82 PathProgramCache]: Analyzing trace with hash 2055645309, now seen corresponding path program 2 times [2020-09-25 03:28:46,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:46,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504572430] [2020-09-25 03:28:46,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:46,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:46,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:46,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:46,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:46,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:47,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:47,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 03:28:47,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:28:47,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1508 [2020-09-25 03:28:47,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:47,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:28:47,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 03:28:47,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 03:28:47,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:47,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:47,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:47,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:47,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:47,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:47,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:47,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:47,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:47,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:47,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:47,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:47,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 03:28:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:47,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:47,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:47,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:47,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:47,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:28:47,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:47,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:47,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 03:28:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:47,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:47,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:47,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:47,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:47,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:28:47,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:47,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:47,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:47,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:47,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:47,880 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 03:28:47,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504572430] [2020-09-25 03:28:47,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:47,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:28:47,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841690651] [2020-09-25 03:28:47,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:28:47,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:47,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:28:47,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:28:47,882 INFO L87 Difference]: Start difference. First operand 1002 states and 1229 transitions. Second operand 11 states. [2020-09-25 03:28:48,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:48,199 INFO L93 Difference]: Finished difference Result 1045 states and 1272 transitions. [2020-09-25 03:28:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 03:28:48,200 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2020-09-25 03:28:48,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:48,204 INFO L225 Difference]: With dead ends: 1045 [2020-09-25 03:28:48,204 INFO L226 Difference]: Without dead ends: 1043 [2020-09-25 03:28:48,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-09-25 03:28:48,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-09-25 03:28:48,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1002. [2020-09-25 03:28:48,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-09-25 03:28:48,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1229 transitions. [2020-09-25 03:28:48,249 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1229 transitions. Word has length 62 [2020-09-25 03:28:48,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:48,250 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1229 transitions. [2020-09-25 03:28:48,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:28:48,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1229 transitions. [2020-09-25 03:28:48,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 03:28:48,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:48,252 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 03:28:48,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-25 03:28:48,252 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:48,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:48,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1385223511, now seen corresponding path program 3 times [2020-09-25 03:28:48,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:48,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833333409] [2020-09-25 03:28:48,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:48,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:48,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:48,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:48,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:48,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:48,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking...