/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loops/eureka_05.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:55:02,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:55:02,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:55:02,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:55:02,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:55:02,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:55:02,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:55:02,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:55:02,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:55:02,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:55:02,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:55:02,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:55:02,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:55:02,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:55:02,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:55:02,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:55:02,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:55:02,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:55:02,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:55:02,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:55:02,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:55:02,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:55:02,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:55:02,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:55:02,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:55:02,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:55:02,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:55:02,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:55:02,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:55:02,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:55:02,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:55:02,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:55:02,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:55:02,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:55:02,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:55:02,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:55:02,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:55:02,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:55:02,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:55:02,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:55:02,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:55:02,197 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:55:02,251 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:55:02,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:55:02,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:55:02,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:55:02,253 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:55:02,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:55:02,254 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:55:02,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:55:02,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:55:02,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:55:02,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:55:02,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:55:02,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:55:02,255 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:55:02,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:55:02,256 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:55:02,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:55:02,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:55:02,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:55:02,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:55:02,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:55:02,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:55:02,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:55:02,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:55:02,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:55:02,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:55:02,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:55:02,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:55:02,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:55:02,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:55:02,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:55:02,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:55:02,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:55:02,657 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:55:02,657 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:55:02,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_05.i [2020-10-27 01:55:02,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ea07b32f/d4afeeb25d4c470aa7e85ce6d8d3de2a/FLAG4b775c474 [2020-10-27 01:55:03,304 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:55:03,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/eureka_05.i [2020-10-27 01:55:03,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ea07b32f/d4afeeb25d4c470aa7e85ce6d8d3de2a/FLAG4b775c474 [2020-10-27 01:55:03,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ea07b32f/d4afeeb25d4c470aa7e85ce6d8d3de2a [2020-10-27 01:55:03,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:55:03,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:55:03,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:55:03,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:55:03,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:55:03,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:55:03" (1/1) ... [2020-10-27 01:55:03,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7015976b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:55:03, skipping insertion in model container [2020-10-27 01:55:03,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:55:03" (1/1) ... [2020-10-27 01:55:03,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:55:03,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:55:03,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:55:03,934 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:55:03,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:55:03,977 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:55:03,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:55:03 WrapperNode [2020-10-27 01:55:03,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:55:03,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:55:03,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:55:03,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:55:03,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:55:03" (1/1) ... [2020-10-27 01:55:03,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:55:03" (1/1) ... [2020-10-27 01:55:04,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:55:03" (1/1) ... [2020-10-27 01:55:04,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:55:03" (1/1) ... [2020-10-27 01:55:04,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:55:03" (1/1) ... [2020-10-27 01:55:04,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:55:03" (1/1) ... [2020-10-27 01:55:04,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:55:03" (1/1) ... [2020-10-27 01:55:04,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:55:04,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:55:04,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:55:04,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:55:04,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:55:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:55:04,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:55:04,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:55:04,135 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:55:04,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 01:55:04,136 INFO L138 BoogieDeclarations]: Found implementation of procedure SelectionSort [2020-10-27 01:55:04,137 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:55:04,138 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:55:04,138 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:55:04,138 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 01:55:04,138 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 01:55:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:55:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:55:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 01:55:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure SelectionSort [2020-10-27 01:55:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:55:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:55:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:55:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:55:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:55:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:55:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:55:04,681 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:55:04,682 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-27 01:55:04,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:55:04 BoogieIcfgContainer [2020-10-27 01:55:04,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:55:04,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:55:04,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:55:04,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:55:04,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:55:03" (1/3) ... [2020-10-27 01:55:04,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116c29cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:55:04, skipping insertion in model container [2020-10-27 01:55:04,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:55:03" (2/3) ... [2020-10-27 01:55:04,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116c29cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:55:04, skipping insertion in model container [2020-10-27 01:55:04,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:55:04" (3/3) ... [2020-10-27 01:55:04,694 INFO L111 eAbstractionObserver]: Analyzing ICFG eureka_05.i [2020-10-27 01:55:04,706 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:55:04,711 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:55:04,725 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:55:04,754 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:55:04,754 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:55:04,755 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:55:04,755 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:55:04,755 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:55:04,755 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:55:04,755 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:55:04,755 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:55:04,774 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-27 01:55:04,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 01:55:04,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:55:04,782 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] [2020-10-27 01:55:04,782 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:55:04,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:55:04,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1174407567, now seen corresponding path program 1 times [2020-10-27 01:55:04,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:55:04,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993178395] [2020-10-27 01:55:04,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:55:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:04,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:05,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:05,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:05,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 01:55:05,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:55:05,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-27 01:55:05,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:05,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:55:05,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:55:05,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:55:05,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:55:05,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:55:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:05,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:05,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:05,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:55:05,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:05,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 01:55:05,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:05,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:05,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:55:05,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:05,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:55:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:05,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:05,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:05,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:05,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:05,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:55:05,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:55:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:55:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:55:05,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:05,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:55:05,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993178395] [2020-10-27 01:55:05,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:55:05,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:55:05,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751985565] [2020-10-27 01:55:05,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:55:05,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:55:05,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:55:05,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:55:05,561 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 7 states. [2020-10-27 01:55:06,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:55:06,098 INFO L93 Difference]: Finished difference Result 75 states and 105 transitions. [2020-10-27 01:55:06,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 01:55:06,100 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-27 01:55:06,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:55:06,110 INFO L225 Difference]: With dead ends: 75 [2020-10-27 01:55:06,110 INFO L226 Difference]: Without dead ends: 39 [2020-10-27 01:55:06,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 01:55:06,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-27 01:55:06,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-10-27 01:55:06,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-27 01:55:06,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-27 01:55:06,163 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 20 [2020-10-27 01:55:06,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:55:06,163 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-27 01:55:06,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:55:06,164 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-27 01:55:06,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 01:55:06,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:55:06,165 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] [2020-10-27 01:55:06,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:55:06,166 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:55:06,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:55:06,167 INFO L82 PathProgramCache]: Analyzing trace with hash -330905265, now seen corresponding path program 1 times [2020-10-27 01:55:06,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:55:06,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208214265] [2020-10-27 01:55:06,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:55:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:06,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:06,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:06,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:07,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:07,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 01:55:07,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:55:07,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-10-27 01:55:07,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:07,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:55:07,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:55:07,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 01:55:07,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:55:07,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:55:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:07,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:07,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:07,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:55:07,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:07,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:55:07,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:55:07,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:07,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:55:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:07,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:07,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:07,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:07,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:55:07,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:55:07,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 01:55:07,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:07,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:55:07,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:55:07,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:55:07,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:07,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:55:07,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208214265] [2020-10-27 01:55:07,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:55:07,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 01:55:07,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410287030] [2020-10-27 01:55:07,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 01:55:07,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:55:07,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 01:55:07,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:55:07,305 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 8 states. [2020-10-27 01:55:07,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:55:07,835 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2020-10-27 01:55:07,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 01:55:07,836 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-27 01:55:07,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:55:07,838 INFO L225 Difference]: With dead ends: 60 [2020-10-27 01:55:07,838 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 01:55:07,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-27 01:55:07,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 01:55:07,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2020-10-27 01:55:07,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-27 01:55:07,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-10-27 01:55:07,850 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 24 [2020-10-27 01:55:07,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:55:07,851 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-10-27 01:55:07,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 01:55:07,851 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-10-27 01:55:07,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 01:55:07,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:55:07,852 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:55:07,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:55:07,853 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:55:07,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:55:07,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1032304153, now seen corresponding path program 2 times [2020-10-27 01:55:07,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:55:07,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562347781] [2020-10-27 01:55:07,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:55:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:07,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:07,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:07,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:07,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:08,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:09,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:09,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 01:55:09,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:55:09,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1617 [2020-10-27 01:55:09,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:55:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:55:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:55:09,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:09,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:55:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:09,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:09,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:09,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:55:09,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:09,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:55:09,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:09,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:09,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:09,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:55:09,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:09,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:55:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:09,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:09,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:09,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:09,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:09,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:09,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 01:55:09,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:55:09,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-27 01:55:09,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:09,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:55:09,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:55:09,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:55:09,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:09,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:55:09,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562347781] [2020-10-27 01:55:09,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:55:09,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 01:55:09,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143114912] [2020-10-27 01:55:09,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 01:55:09,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:55:09,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 01:55:09,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:55:09,992 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 8 states. [2020-10-27 01:55:10,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:55:10,494 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2020-10-27 01:55:10,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 01:55:10,495 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-27 01:55:10,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:55:10,496 INFO L225 Difference]: With dead ends: 67 [2020-10-27 01:55:10,496 INFO L226 Difference]: Without dead ends: 43 [2020-10-27 01:55:10,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-27 01:55:10,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-27 01:55:10,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-10-27 01:55:10,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 01:55:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-27 01:55:10,507 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 28 [2020-10-27 01:55:10,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:55:10,507 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-27 01:55:10,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 01:55:10,508 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-27 01:55:10,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 01:55:10,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:55:10,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:55:10,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:55:10,509 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:55:10,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:55:10,510 INFO L82 PathProgramCache]: Analyzing trace with hash 298874923, now seen corresponding path program 1 times [2020-10-27 01:55:10,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:55:10,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595923343] [2020-10-27 01:55:10,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:55:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:10,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:10,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:10,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:10,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:12,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:12,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 01:55:12,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:55:12,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2159 [2020-10-27 01:55:12,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:12,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:55:12,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:55:12,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:55:12,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:12,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:55:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:12,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:12,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:12,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:55:12,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:12,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:55:12,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:12,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:12,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:12,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:55:12,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:12,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:55:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:12,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:12,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:12,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:13,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:13,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:55:13,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:55:13,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-10-27 01:55:13,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:13,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:55:13,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:55:13,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:55:13,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:55:13,263 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 01:55:13,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595923343] [2020-10-27 01:55:13,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:55:13,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 01:55:13,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967496235] [2020-10-27 01:55:13,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 01:55:13,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:55:13,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 01:55:13,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:55:13,266 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 9 states. [2020-10-27 01:55:13,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:55:13,840 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2020-10-27 01:55:13,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 01:55:13,841 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-27 01:55:13,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:55:13,843 INFO L225 Difference]: With dead ends: 67 [2020-10-27 01:55:13,843 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 01:55:13,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-27 01:55:13,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 01:55:13,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2020-10-27 01:55:13,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 01:55:13,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-10-27 01:55:13,854 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 31 [2020-10-27 01:55:13,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:55:13,854 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-10-27 01:55:13,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 01:55:13,855 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-10-27 01:55:13,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 01:55:13,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:55:13,856 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:55:13,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:55:13,856 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:55:13,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:55:13,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1684591933, now seen corresponding path program 2 times [2020-10-27 01:55:13,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:55:13,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519654943] [2020-10-27 01:55:13,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:55:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:13,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:13,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:13,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:13,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:14,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:14,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:14,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:18,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:18,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 01:55:18,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 01:55:18,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 01:55:18,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:18,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:55:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:55:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:55:18,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:55:18,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:55:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:18,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:18,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:18,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:55:18,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:18,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:55:18,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:18,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:18,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:18,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:55:18,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:18,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:55:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:18,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:18,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:19,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:19,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:19,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:19,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:20,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:20,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 01:55:20,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:55:20,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1365 [2020-10-27 01:55:20,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:20,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:55:20,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:55:20,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:55:20,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:55:20,400 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-27 01:55:20,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519654943] [2020-10-27 01:55:20,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:55:20,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 01:55:20,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384009957] [2020-10-27 01:55:20,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 01:55:20,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:55:20,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 01:55:20,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:55:20,404 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 9 states. [2020-10-27 01:55:20,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:55:20,945 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2020-10-27 01:55:20,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 01:55:20,946 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-10-27 01:55:20,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:55:20,947 INFO L225 Difference]: With dead ends: 82 [2020-10-27 01:55:20,947 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 01:55:20,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-27 01:55:20,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 01:55:20,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2020-10-27 01:55:20,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-27 01:55:20,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2020-10-27 01:55:20,958 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 35 [2020-10-27 01:55:20,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:55:20,958 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2020-10-27 01:55:20,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 01:55:20,958 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2020-10-27 01:55:20,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-27 01:55:20,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:55:20,960 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 01:55:20,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:55:20,960 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:55:20,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:55:20,961 INFO L82 PathProgramCache]: Analyzing trace with hash -417388545, now seen corresponding path program 3 times [2020-10-27 01:55:20,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:55:20,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043786725] [2020-10-27 01:55:20,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:55:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:20,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:20,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:21,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:21,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:21,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:21,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:21,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:25,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:25,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 01:55:25,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 01:55:25,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 01:55:25,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:25,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:55:25,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:55:25,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 01:55:25,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:26,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:55:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:26,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:26,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:26,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:55:26,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:26,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:55:26,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:26,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:55:26,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:26,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:55:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:26,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:26,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:26,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:26,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:26,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:26,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:27,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:27,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 01:55:27,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:55:27,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1690 [2020-10-27 01:55:27,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:27,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:55:27,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:55:27,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 01:55:27,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:27,812 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 01:55:27,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043786725] [2020-10-27 01:55:27,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:55:27,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 01:55:27,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487687082] [2020-10-27 01:55:27,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 01:55:27,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:55:27,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 01:55:27,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:55:27,815 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 9 states. [2020-10-27 01:55:28,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:55:28,412 INFO L93 Difference]: Finished difference Result 77 states and 94 transitions. [2020-10-27 01:55:28,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 01:55:28,413 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-27 01:55:28,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:55:28,414 INFO L225 Difference]: With dead ends: 77 [2020-10-27 01:55:28,414 INFO L226 Difference]: Without dead ends: 53 [2020-10-27 01:55:28,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:55:28,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-27 01:55:28,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2020-10-27 01:55:28,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 01:55:28,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2020-10-27 01:55:28,425 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 38 [2020-10-27 01:55:28,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:55:28,425 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2020-10-27 01:55:28,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 01:55:28,426 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2020-10-27 01:55:28,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 01:55:28,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:55:28,427 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:55:28,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 01:55:28,427 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:55:28,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:55:28,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1214235411, now seen corresponding path program 4 times [2020-10-27 01:55:28,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:55:28,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258587183] [2020-10-27 01:55:28,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:55:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:28,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:28,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:28,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:28,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:28,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:33,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:33,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 01:55:33,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:55:33,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 01:55:33,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:33,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:55:33,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:55:33,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 01:55:33,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:33,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:55:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:33,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:33,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:33,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:55:33,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:33,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 01:55:33,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:33,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:33,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:33,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:55:33,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:55:33,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:55:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:33,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:33,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:33,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:33,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:35,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:35,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 01:55:35,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:55:35,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1656 [2020-10-27 01:55:35,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:35,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:55:35,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:55:35,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 01:55:35,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:35,374 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:55:35,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258587183] [2020-10-27 01:55:35,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:55:35,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 01:55:35,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017971922] [2020-10-27 01:55:35,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 01:55:35,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:55:35,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 01:55:35,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:55:35,377 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 10 states. [2020-10-27 01:55:36,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:55:36,117 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-10-27 01:55:36,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 01:55:36,118 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-10-27 01:55:36,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:55:36,119 INFO L225 Difference]: With dead ends: 82 [2020-10-27 01:55:36,119 INFO L226 Difference]: Without dead ends: 61 [2020-10-27 01:55:36,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2020-10-27 01:55:36,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-27 01:55:36,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2020-10-27 01:55:36,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 01:55:36,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2020-10-27 01:55:36,130 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 41 [2020-10-27 01:55:36,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:55:36,130 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2020-10-27 01:55:36,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 01:55:36,131 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-10-27 01:55:36,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 01:55:36,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:55:36,132 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:55:36,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 01:55:36,132 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:55:36,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:55:36,133 INFO L82 PathProgramCache]: Analyzing trace with hash -255182513, now seen corresponding path program 5 times [2020-10-27 01:55:36,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:55:36,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519919228] [2020-10-27 01:55:36,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:55:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:36,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:36,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:36,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:36,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:36,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:36,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:36,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:36,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:41,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:41,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 01:55:41,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 01:55:41,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 01:55:41,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:55:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:55:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 01:55:41,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:41,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:55:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:41,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:41,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:41,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:55:41,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:41,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:55:41,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:55:41,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:41,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:55:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:41,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:41,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:41,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:41,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:41,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:41,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:41,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:44,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:44,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 01:55:44,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 01:55:44,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3498 [2020-10-27 01:55:44,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:44,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:55:44,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:55:44,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 01:55:44,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:44,812 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:55:44,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519919228] [2020-10-27 01:55:44,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:55:44,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 01:55:44,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736590221] [2020-10-27 01:55:44,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 01:55:44,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:55:44,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 01:55:44,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:55:44,814 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 11 states. [2020-10-27 01:55:45,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:55:45,748 INFO L93 Difference]: Finished difference Result 94 states and 118 transitions. [2020-10-27 01:55:45,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 01:55:45,749 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-27 01:55:45,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:55:45,750 INFO L225 Difference]: With dead ends: 94 [2020-10-27 01:55:45,750 INFO L226 Difference]: Without dead ends: 69 [2020-10-27 01:55:45,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2020-10-27 01:55:45,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-27 01:55:45,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 56. [2020-10-27 01:55:45,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 01:55:45,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2020-10-27 01:55:45,767 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 44 [2020-10-27 01:55:45,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:55:45,768 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2020-10-27 01:55:45,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 01:55:45,768 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2020-10-27 01:55:45,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 01:55:45,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:55:45,769 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:55:45,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 01:55:45,773 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:55:45,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:55:45,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1104798975, now seen corresponding path program 6 times [2020-10-27 01:55:45,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:55:45,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540529957] [2020-10-27 01:55:45,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:55:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:45,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:45,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:45,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:45,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:45,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:46,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:46,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:46,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:46,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:46,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:47,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:50,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:50,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 01:55:50,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 01:55:50,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 01:55:50,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:55:50,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:55:50,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:55:50,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:55:50,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:55:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:50,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:50,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:50,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:55:50,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:50,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:55:50,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:50,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:50,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:50,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:55:50,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:50,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:55:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:50,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:50,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:50,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:51,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:51,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:51,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:51,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:51,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:51,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:51,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:55,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:55,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 01:55:55,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 01:55:55,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 01:55:55,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:55,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:55:55,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:55:55,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 01:55:55,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:55,946 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 01:55:55,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540529957] [2020-10-27 01:55:55,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:55:55,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 01:55:55,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78549495] [2020-10-27 01:55:55,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 01:55:55,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:55:55,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 01:55:55,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:55:55,948 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 10 states. [2020-10-27 01:55:56,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:55:56,562 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2020-10-27 01:55:56,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 01:55:56,562 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-27 01:55:56,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:55:56,564 INFO L225 Difference]: With dead ends: 84 [2020-10-27 01:55:56,564 INFO L226 Difference]: Without dead ends: 69 [2020-10-27 01:55:56,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-10-27 01:55:56,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-27 01:55:56,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 62. [2020-10-27 01:55:56,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 01:55:56,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2020-10-27 01:55:56,591 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 50 [2020-10-27 01:55:56,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:55:56,594 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2020-10-27 01:55:56,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 01:55:56,595 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2020-10-27 01:55:56,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 01:55:56,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:55:56,598 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:55:56,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 01:55:56,598 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:55:56,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:55:56,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1665790569, now seen corresponding path program 7 times [2020-10-27 01:55:56,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:55:56,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153800320] [2020-10-27 01:55:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:55:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:56,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:56,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:56,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:56,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:56,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:56,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:56,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:56,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:59,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:59,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:59,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:59,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:01,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:01,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 01:56:01,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 01:56:01,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 01:56:01,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:01,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:56:01,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:56:01,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 01:56:01,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:01,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:56:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:01,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:01,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:01,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:56:01,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:01,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:56:01,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:01,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:01,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:01,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:56:01,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:01,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:56:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:01,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:01,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:01,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:01,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:01,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:02,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:02,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:02,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:02,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:02,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:02,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:06,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:06,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 01:56:06,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 01:56:06,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 01:56:06,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:06,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:56:06,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:56:06,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 01:56:06,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:06,761 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 01:56:06,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153800320] [2020-10-27 01:56:06,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:56:06,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 01:56:06,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002640510] [2020-10-27 01:56:06,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 01:56:06,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:56:06,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 01:56:06,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:56:06,764 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand 10 states. [2020-10-27 01:56:07,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:56:07,382 INFO L93 Difference]: Finished difference Result 113 states and 141 transitions. [2020-10-27 01:56:07,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 01:56:07,383 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-10-27 01:56:07,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:56:07,385 INFO L225 Difference]: With dead ends: 113 [2020-10-27 01:56:07,385 INFO L226 Difference]: Without dead ends: 69 [2020-10-27 01:56:07,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-27 01:56:07,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-27 01:56:07,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-10-27 01:56:07,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-27 01:56:07,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2020-10-27 01:56:07,403 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 54 [2020-10-27 01:56:07,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:56:07,405 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2020-10-27 01:56:07,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 01:56:07,405 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2020-10-27 01:56:07,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 01:56:07,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:56:07,408 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:56:07,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 01:56:07,409 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:56:07,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:56:07,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1197920549, now seen corresponding path program 8 times [2020-10-27 01:56:07,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:56:07,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836984547] [2020-10-27 01:56:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:56:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:07,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:07,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:07,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:07,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:07,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:07,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:08,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:08,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:08,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:12,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:12,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 01:56:12,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 01:56:12,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 01:56:12,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:12,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:56:12,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:56:12,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 01:56:12,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:12,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:56:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:12,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:12,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:12,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:56:12,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:12,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:56:12,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:12,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:12,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:12,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:56:12,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:12,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:56:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:12,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:12,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:12,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:12,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:12,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:12,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:12,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:13,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:17,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:17,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 01:56:17,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 01:56:17,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 01:56:17,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:17,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:56:17,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:56:17,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 01:56:17,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:17,601 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 01:56:17,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836984547] [2020-10-27 01:56:17,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:56:17,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 01:56:17,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014291340] [2020-10-27 01:56:17,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 01:56:17,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:56:17,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 01:56:17,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:56:17,603 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand 11 states. [2020-10-27 01:56:18,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:56:18,467 INFO L93 Difference]: Finished difference Result 108 states and 135 transitions. [2020-10-27 01:56:18,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 01:56:18,468 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-27 01:56:18,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:56:18,469 INFO L225 Difference]: With dead ends: 108 [2020-10-27 01:56:18,469 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 01:56:18,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2020-10-27 01:56:18,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 01:56:18,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2020-10-27 01:56:18,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 01:56:18,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 83 transitions. [2020-10-27 01:56:18,484 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 83 transitions. Word has length 57 [2020-10-27 01:56:18,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:56:18,484 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 83 transitions. [2020-10-27 01:56:18,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 01:56:18,485 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 83 transitions. [2020-10-27 01:56:18,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 01:56:18,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:56:18,486 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:56:18,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 01:56:18,486 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:56:18,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:56:18,487 INFO L82 PathProgramCache]: Analyzing trace with hash -385734425, now seen corresponding path program 9 times [2020-10-27 01:56:18,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:56:18,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502584209] [2020-10-27 01:56:18,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:56:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:18,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:18,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:18,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:18,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:18,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:19,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:19,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:19,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:19,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:19,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:23,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:23,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 01:56:23,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 01:56:23,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 01:56:23,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:23,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:56:23,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:56:23,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 01:56:23,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:23,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:56:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:23,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:23,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:23,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:56:23,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:23,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:56:23,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:23,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:23,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:23,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:56:23,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:23,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:56:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:23,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:23,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:23,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:23,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:24,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:24,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:24,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:24,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:24,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:28,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:28,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 01:56:28,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 01:56:28,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 01:56:28,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:28,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:56:28,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:56:28,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 01:56:28,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:28,671 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 01:56:28,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502584209] [2020-10-27 01:56:28,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:56:28,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 01:56:28,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734148372] [2020-10-27 01:56:28,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 01:56:28,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:56:28,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 01:56:28,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:56:28,673 INFO L87 Difference]: Start difference. First operand 68 states and 83 transitions. Second operand 11 states. [2020-10-27 01:56:29,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:56:29,385 INFO L93 Difference]: Finished difference Result 96 states and 119 transitions. [2020-10-27 01:56:29,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 01:56:29,386 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-10-27 01:56:29,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:56:29,387 INFO L225 Difference]: With dead ends: 96 [2020-10-27 01:56:29,387 INFO L226 Difference]: Without dead ends: 81 [2020-10-27 01:56:29,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-10-27 01:56:29,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-27 01:56:29,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2020-10-27 01:56:29,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 01:56:29,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2020-10-27 01:56:29,417 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 60 [2020-10-27 01:56:29,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:56:29,417 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2020-10-27 01:56:29,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 01:56:29,418 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2020-10-27 01:56:29,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 01:56:29,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:56:29,419 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:56:29,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 01:56:29,419 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:56:29,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:56:29,419 INFO L82 PathProgramCache]: Analyzing trace with hash 751443327, now seen corresponding path program 10 times [2020-10-27 01:56:29,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:56:29,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079493362] [2020-10-27 01:56:29,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:56:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:29,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:29,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:29,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:29,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:29,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:30,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:30,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:30,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:31,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:34,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:34,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 01:56:34,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 01:56:34,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 01:56:34,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:56:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:56:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 01:56:34,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:34,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:56:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:34,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:34,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:34,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:56:34,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:34,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:56:34,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:56:34,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:34,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:56:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:34,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:34,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:34,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:34,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:34,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:34,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:35,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:35,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:39,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:39,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 01:56:39,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 01:56:39,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 01:56:39,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:39,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:56:39,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:56:39,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 01:56:39,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:39,594 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-27 01:56:39,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079493362] [2020-10-27 01:56:39,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:56:39,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 01:56:39,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189005556] [2020-10-27 01:56:39,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 01:56:39,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:56:39,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 01:56:39,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:56:39,596 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand 11 states. [2020-10-27 01:56:40,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:56:40,299 INFO L93 Difference]: Finished difference Result 134 states and 169 transitions. [2020-10-27 01:56:40,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 01:56:40,300 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2020-10-27 01:56:40,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:56:40,302 INFO L225 Difference]: With dead ends: 134 [2020-10-27 01:56:40,302 INFO L226 Difference]: Without dead ends: 81 [2020-10-27 01:56:40,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2020-10-27 01:56:40,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-27 01:56:40,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2020-10-27 01:56:40,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-27 01:56:40,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2020-10-27 01:56:40,313 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 64 [2020-10-27 01:56:40,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:56:40,314 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2020-10-27 01:56:40,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 01:56:40,314 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2020-10-27 01:56:40,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 01:56:40,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:56:40,315 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:56:40,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 01:56:40,316 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:56:40,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:56:40,316 INFO L82 PathProgramCache]: Analyzing trace with hash 280459715, now seen corresponding path program 11 times [2020-10-27 01:56:40,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:56:40,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078294102] [2020-10-27 01:56:40,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:56:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:40,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:40,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:40,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:40,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:40,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:40,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:45,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:45,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 01:56:45,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:56:45,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 01:56:45,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:56:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:56:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 01:56:45,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:45,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:56:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:45,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:45,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:45,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:56:45,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:45,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:56:45,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:45,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:45,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:45,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:56:45,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:45,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:56:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:45,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:45,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:45,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:45,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:45,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:50,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:50,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 01:56:50,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:56:50,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 01:56:50,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:56:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:56:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 01:56:50,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:50,498 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-27 01:56:50,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078294102] [2020-10-27 01:56:50,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:56:50,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 01:56:50,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776477452] [2020-10-27 01:56:50,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 01:56:50,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:56:50,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 01:56:50,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:56:50,501 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand 11 states. [2020-10-27 01:56:51,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:56:51,322 INFO L93 Difference]: Finished difference Result 106 states and 132 transitions. [2020-10-27 01:56:51,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 01:56:51,324 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-27 01:56:51,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:56:51,325 INFO L225 Difference]: With dead ends: 106 [2020-10-27 01:56:51,326 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 01:56:51,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2020-10-27 01:56:51,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 01:56:51,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2020-10-27 01:56:51,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-27 01:56:51,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 96 transitions. [2020-10-27 01:56:51,337 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 96 transitions. Word has length 67 [2020-10-27 01:56:51,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:56:51,338 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 96 transitions. [2020-10-27 01:56:51,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 01:56:51,338 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 96 transitions. [2020-10-27 01:56:51,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 01:56:51,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:56:51,339 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:56:51,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 01:56:51,340 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:56:51,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:56:51,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1124930865, now seen corresponding path program 12 times [2020-10-27 01:56:51,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:56:51,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292985686] [2020-10-27 01:56:51,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:56:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:51,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:51,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:51,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 01:56:51,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:51,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 01:56:51,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:51,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:51,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:56:51,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:56:51,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:51,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:56:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:51,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:51,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:51,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:56:51,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:51,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:56:51,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:51,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:56:51,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:51,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:56:51,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:51,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:56:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:51,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:51,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:51,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 01:56:51,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:51,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 01:56:51,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:51,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:56:51,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 01:56:51,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:56:51,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:51,556 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2020-10-27 01:56:51,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292985686] [2020-10-27 01:56:51,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:56:51,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:56:51,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349949351] [2020-10-27 01:56:51,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:56:51,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:56:51,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:56:51,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:56:51,559 INFO L87 Difference]: Start difference. First operand 78 states and 96 transitions. Second operand 5 states. [2020-10-27 01:56:51,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:56:51,756 INFO L93 Difference]: Finished difference Result 150 states and 186 transitions. [2020-10-27 01:56:51,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:56:51,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-27 01:56:51,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:56:51,757 INFO L225 Difference]: With dead ends: 150 [2020-10-27 01:56:51,758 INFO L226 Difference]: Without dead ends: 80 [2020-10-27 01:56:51,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:56:51,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-27 01:56:51,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-27 01:56:51,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-27 01:56:51,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2020-10-27 01:56:51,775 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 70 [2020-10-27 01:56:51,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:56:51,775 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2020-10-27 01:56:51,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:56:51,775 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2020-10-27 01:56:51,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 01:56:51,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:56:51,776 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:56:51,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 01:56:51,777 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:56:51,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:56:51,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1436777201, now seen corresponding path program 1 times [2020-10-27 01:56:51,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:56:51,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515643816] [2020-10-27 01:56:51,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:56:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:51,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:52,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:53,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:53,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 01:56:53,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:56:53,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1533 [2020-10-27 01:56:53,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:56:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:56:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 01:56:53,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:53,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:56:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:53,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:53,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:53,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:56:53,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:53,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:56:53,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:53,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:56:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:56:53,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:53,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:56:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:53,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:53,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:53,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 01:56:53,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:53,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 01:56:53,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:56:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 01:56:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:56:53,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:53,488 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2020-10-27 01:56:53,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515643816] [2020-10-27 01:56:53,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:56:53,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 01:56:53,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671437019] [2020-10-27 01:56:53,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:56:53,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:56:53,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:56:53,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:56:53,494 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand 6 states. [2020-10-27 01:56:53,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:56:53,682 INFO L93 Difference]: Finished difference Result 152 states and 188 transitions. [2020-10-27 01:56:53,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:56:53,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-27 01:56:53,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:56:53,683 INFO L225 Difference]: With dead ends: 152 [2020-10-27 01:56:53,683 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 01:56:53,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:56:53,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 01:56:53,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-27 01:56:53,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-27 01:56:53,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 99 transitions. [2020-10-27 01:56:53,694 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 99 transitions. Word has length 72 [2020-10-27 01:56:53,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:56:53,695 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 99 transitions. [2020-10-27 01:56:53,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:56:53,695 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 99 transitions. [2020-10-27 01:56:53,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 01:56:53,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:56:53,696 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:56:53,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 01:56:53,696 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:56:53,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:56:53,697 INFO L82 PathProgramCache]: Analyzing trace with hash -2072999277, now seen corresponding path program 2 times [2020-10-27 01:56:53,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:56:53,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233938888] [2020-10-27 01:56:53,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:56:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:53,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:53,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:54,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:58,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:58,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 01:56:58,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:56:58,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 01:56:58,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:58,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 01:56:58,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:56:58,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 01:56:58,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:59,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:56:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:59,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:59,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:59,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:56:59,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:59,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:56:59,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:59,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:59,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:59,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:56:59,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:59,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:56:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:59,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:59,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:59,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 01:56:59,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:59,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-27 01:56:59,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:59,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:56:59,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:56:59,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 01:56:59,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:59,582 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 3 proven. 107 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-27 01:56:59,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233938888] [2020-10-27 01:56:59,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:56:59,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 01:56:59,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720761326] [2020-10-27 01:56:59,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 01:56:59,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:56:59,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 01:56:59,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-27 01:56:59,585 INFO L87 Difference]: Start difference. First operand 81 states and 99 transitions. Second operand 15 states. [2020-10-27 01:57:00,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:57:00,452 INFO L93 Difference]: Finished difference Result 93 states and 111 transitions. [2020-10-27 01:57:00,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 01:57:00,453 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 74 [2020-10-27 01:57:00,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:57:00,455 INFO L225 Difference]: With dead ends: 93 [2020-10-27 01:57:00,455 INFO L226 Difference]: Without dead ends: 89 [2020-10-27 01:57:00,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2020-10-27 01:57:00,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-27 01:57:00,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2020-10-27 01:57:00,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-27 01:57:00,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 105 transitions. [2020-10-27 01:57:00,470 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 105 transitions. Word has length 74 [2020-10-27 01:57:00,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:57:00,470 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 105 transitions. [2020-10-27 01:57:00,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 01:57:00,470 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 105 transitions. [2020-10-27 01:57:00,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 01:57:00,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:57:00,471 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:57:00,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 01:57:00,472 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:57:00,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:57:00,472 INFO L82 PathProgramCache]: Analyzing trace with hash -2058200185, now seen corresponding path program 1 times [2020-10-27 01:57:00,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:57:00,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229116028] [2020-10-27 01:57:00,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:57:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:00,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:00,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 01:57:02,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:57:02,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2201 [2020-10-27 01:57:02,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:57:02,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:57:02,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:02,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:02,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:57:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:02,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:57:02,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:02,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:57:02,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:57:02,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:02,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:57:02,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:02,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:57:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:02,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 01:57:02,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:02,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 01:57:02,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:57:02,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 01:57:02,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:57:02,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:02,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 01:57:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:02,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:02,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:02,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:02,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:57:02,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 01:57:02,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:57:02,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2020-10-27 01:57:02,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229116028] [2020-10-27 01:57:02,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:57:02,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 01:57:02,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93281414] [2020-10-27 01:57:02,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:57:02,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:57:02,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:57:02,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:57:02,879 INFO L87 Difference]: Start difference. First operand 87 states and 105 transitions. Second operand 7 states. [2020-10-27 01:57:03,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:57:03,077 INFO L93 Difference]: Finished difference Result 166 states and 202 transitions. [2020-10-27 01:57:03,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 01:57:03,078 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-10-27 01:57:03,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:57:03,080 INFO L225 Difference]: With dead ends: 166 [2020-10-27 01:57:03,080 INFO L226 Difference]: Without dead ends: 90 [2020-10-27 01:57:03,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:57:03,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-27 01:57:03,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-27 01:57:03,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-27 01:57:03,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 107 transitions. [2020-10-27 01:57:03,096 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 107 transitions. Word has length 82 [2020-10-27 01:57:03,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:57:03,097 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 107 transitions. [2020-10-27 01:57:03,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:57:03,097 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 107 transitions. [2020-10-27 01:57:03,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 01:57:03,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:57:03,099 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 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] [2020-10-27 01:57:03,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 01:57:03,099 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:57:03,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:57:03,099 INFO L82 PathProgramCache]: Analyzing trace with hash -149829463, now seen corresponding path program 2 times [2020-10-27 01:57:03,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:57:03,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884003061] [2020-10-27 01:57:03,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:57:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:03,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:03,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:03,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:04,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:06,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:08,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:08,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 01:57:08,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:57:08,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 01:57:08,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:08,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-27 01:57:08,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:57:08,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 01:57:08,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:08,703 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2020-10-27 01:57:09,006 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2020-10-27 01:57:09,394 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2020-10-27 01:57:09,718 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2020-10-27 01:57:10,114 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2020-10-27 01:57:10,433 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2020-10-27 01:57:10,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:57:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:10,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:10,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:10,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:57:10,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:10,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:57:10,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:10,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:10,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:10,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:57:10,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:10,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 01:57:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:10,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:11,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:11,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:12,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:13,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:14,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:15,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:15,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:16,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:16,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 01:57:16,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 01:57:16,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5317 [2020-10-27 01:57:16,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:16,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 01:57:16,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:57:16,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 01:57:16,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0