/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:45:16,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:45:16,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:45:16,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:45:16,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:45:16,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:45:16,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:45:16,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:45:16,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:45:16,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:45:16,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:45:16,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:45:16,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:45:16,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:45:16,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:45:16,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:45:16,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:45:16,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:45:16,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:45:16,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:45:16,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:45:16,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:45:16,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:45:16,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:45:16,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:45:16,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:45:16,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:45:16,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:45:16,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:45:16,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:45:16,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:45:16,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:45:16,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:45:16,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:45:16,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:45:16,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:45:16,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:45:16,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:45:16,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:45:16,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:45:16,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:45:16,719 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 18:45:16,763 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:45:16,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:45:16,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:45:16,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:45:16,768 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:45:16,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:45:16,768 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:45:16,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:45:16,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:45:16,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:45:16,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:45:16,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:45:16,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:45:16,770 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:45:16,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:45:16,771 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:45:16,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:45:16,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:45:16,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:45:16,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:45:16,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:45:16,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:45:16,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:45:16,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:45:16,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:45:16,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:45:16,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:45:16,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:45:16,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:45:16,773 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:45:17,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:45:17,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:45:17,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:45:17,201 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:45:17,202 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:45:17,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label52.c [2020-10-27 18:45:17,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/418106c6e/32673b076d6a4d7dba3828103a3b377f/FLAG22b7766fb [2020-10-27 18:45:18,087 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:45:18,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label52.c [2020-10-27 18:45:18,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/418106c6e/32673b076d6a4d7dba3828103a3b377f/FLAG22b7766fb [2020-10-27 18:45:18,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/418106c6e/32673b076d6a4d7dba3828103a3b377f [2020-10-27 18:45:18,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:45:18,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:45:18,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:45:18,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:45:18,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:45:18,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:45:18" (1/1) ... [2020-10-27 18:45:18,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1699b0c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:45:18, skipping insertion in model container [2020-10-27 18:45:18,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:45:18" (1/1) ... [2020-10-27 18:45:18,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:45:18,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:45:19,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:45:19,224 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:45:19,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:45:19,573 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:45:19,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:45:19 WrapperNode [2020-10-27 18:45:19,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:45:19,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:45:19,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:45:19,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:45:19,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:45:19" (1/1) ... [2020-10-27 18:45:19,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:45:19" (1/1) ... [2020-10-27 18:45:19,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:45:19" (1/1) ... [2020-10-27 18:45:19,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:45:19" (1/1) ... [2020-10-27 18:45:19,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:45:19" (1/1) ... [2020-10-27 18:45:19,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:45:19" (1/1) ... [2020-10-27 18:45:19,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:45:19" (1/1) ... [2020-10-27 18:45:19,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:45:19,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:45:19,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:45:19,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:45:19,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:45:19" (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 18:45:19,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:45:19,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:45:19,874 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:45:19,875 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:45:19,875 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:45:19,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:45:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:45:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:45:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:45:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:45:19,877 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:45:19,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:45:19,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:45:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:45:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:45:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:45:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:45:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:45:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:45:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:45:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:45:22,463 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:45:22,464 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:45:22,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:45:22 BoogieIcfgContainer [2020-10-27 18:45:22,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:45:22,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:45:22,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:45:22,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:45:22,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:45:18" (1/3) ... [2020-10-27 18:45:22,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4885e0cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:45:22, skipping insertion in model container [2020-10-27 18:45:22,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:45:19" (2/3) ... [2020-10-27 18:45:22,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4885e0cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:45:22, skipping insertion in model container [2020-10-27 18:45:22,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:45:22" (3/3) ... [2020-10-27 18:45:22,475 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label52.c [2020-10-27 18:45:22,487 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:45:22,493 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:45:22,506 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:45:22,536 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:45:22,536 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:45:22,536 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:45:22,536 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:45:22,537 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:45:22,537 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:45:22,537 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:45:22,537 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:45:22,564 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 18:45:22,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 18:45:22,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:45:22,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:45:22,572 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:45:22,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:45:22,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1025423708, now seen corresponding path program 1 times [2020-10-27 18:45:22,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:45:22,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887960785] [2020-10-27 18:45:22,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:45:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:22,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:23,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:23,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 18:45:23,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:23,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-10-27 18:45:23,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:23,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:45:23,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:45:23,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 18:45:23,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:45:23,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:45:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:23,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:23,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:23,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:45:23,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:23,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:45:23,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:23,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:45:23,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:23,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:45:23,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:23,416 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 18:45:23,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887960785] [2020-10-27 18:45:23,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:45:23,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:45:23,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631740705] [2020-10-27 18:45:23,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:45:23,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:45:23,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:45:23,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:45:23,442 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-27 18:45:28,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:45:28,009 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-27 18:45:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:45:28,011 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-27 18:45:28,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:45:28,039 INFO L225 Difference]: With dead ends: 1174 [2020-10-27 18:45:28,039 INFO L226 Difference]: Without dead ends: 697 [2020-10-27 18:45:28,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:45:28,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-27 18:45:28,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-27 18:45:28,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-27 18:45:28,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-27 18:45:28,153 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 36 [2020-10-27 18:45:28,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:45:28,154 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-27 18:45:28,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:45:28,154 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-27 18:45:28,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 18:45:28,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:45:28,161 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:45:28,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:45:28,162 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:45:28,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:45:28,164 INFO L82 PathProgramCache]: Analyzing trace with hash 76724004, now seen corresponding path program 1 times [2020-10-27 18:45:28,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:45:28,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38862904] [2020-10-27 18:45:28,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:45:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:28,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:28,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:29,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:29,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 18:45:29,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:45:29,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1360 [2020-10-27 18:45:29,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 18:45:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 18:45:29,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:45:29,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:45:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:29,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:29,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:29,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:45:29,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:29,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 18:45:29,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:29,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:29,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:29,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:29,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:45:29,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:45:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:29,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:29,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:29,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:45:29,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:29,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 18:45:29,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:29,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:45:29,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:29,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:45:29,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:45:29,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38862904] [2020-10-27 18:45:29,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:45:29,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:45:29,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321428440] [2020-10-27 18:45:29,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:45:29,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:45:29,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:45:29,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:45:29,958 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 5 states. [2020-10-27 18:45:34,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:45:34,289 INFO L93 Difference]: Finished difference Result 1726 states and 2651 transitions. [2020-10-27 18:45:34,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:45:34,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-27 18:45:34,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:45:34,298 INFO L225 Difference]: With dead ends: 1726 [2020-10-27 18:45:34,299 INFO L226 Difference]: Without dead ends: 1039 [2020-10-27 18:45:34,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:45:34,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-27 18:45:34,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1035. [2020-10-27 18:45:34,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-10-27 18:45:34,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1430 transitions. [2020-10-27 18:45:34,360 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1430 transitions. Word has length 112 [2020-10-27 18:45:34,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:45:34,363 INFO L481 AbstractCegarLoop]: Abstraction has 1035 states and 1430 transitions. [2020-10-27 18:45:34,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:45:34,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1430 transitions. [2020-10-27 18:45:34,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-27 18:45:34,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:45:34,367 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:45:34,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:45:34,368 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:45:34,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:45:34,368 INFO L82 PathProgramCache]: Analyzing trace with hash 724288254, now seen corresponding path program 1 times [2020-10-27 18:45:34,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:45:34,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438679460] [2020-10-27 18:45:34,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:45:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:34,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:34,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:36,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:36,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-27 18:45:36,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:45:36,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1700 [2020-10-27 18:45:36,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:36,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:36,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-27 18:45:36,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 18:45:36,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:36,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:45:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:36,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:36,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:36,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:45:36,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:36,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:45:36,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:36,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:36,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:36,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:36,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:36,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:45:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:36,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:36,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:36,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 18:45:36,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:36,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 18:45:36,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:36,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:45:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 18:45:36,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:36,614 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:45:36,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438679460] [2020-10-27 18:45:36,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:45:36,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:45:36,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833181194] [2020-10-27 18:45:36,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:45:36,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:45:36,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:45:36,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:45:36,618 INFO L87 Difference]: Start difference. First operand 1035 states and 1430 transitions. Second operand 5 states. [2020-10-27 18:45:43,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:45:43,356 INFO L93 Difference]: Finished difference Result 2410 states and 3482 transitions. [2020-10-27 18:45:43,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:45:43,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-27 18:45:43,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:45:43,369 INFO L225 Difference]: With dead ends: 2410 [2020-10-27 18:45:43,369 INFO L226 Difference]: Without dead ends: 1381 [2020-10-27 18:45:43,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:45:43,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2020-10-27 18:45:43,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1377. [2020-10-27 18:45:43,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1377 states. [2020-10-27 18:45:43,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1850 transitions. [2020-10-27 18:45:43,418 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1850 transitions. Word has length 165 [2020-10-27 18:45:43,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:45:43,420 INFO L481 AbstractCegarLoop]: Abstraction has 1377 states and 1850 transitions. [2020-10-27 18:45:43,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:45:43,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1850 transitions. [2020-10-27 18:45:43,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-27 18:45:43,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:45:43,432 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:45:43,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:45:43,433 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:45:43,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:45:43,433 INFO L82 PathProgramCache]: Analyzing trace with hash -813286368, now seen corresponding path program 1 times [2020-10-27 18:45:43,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:45:43,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706227111] [2020-10-27 18:45:43,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:45:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:43,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:43,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:43,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:44,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:45,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:48,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:48,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-27 18:45:48,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:45:48,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4964 [2020-10-27 18:45:48,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:48,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:48,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-10-27 18:45:48,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 18:45:48,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:48,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:45:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:48,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:48,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:48,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:45:48,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:48,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:45:48,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:48,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:48,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:48,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:48,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:48,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:45:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:48,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:48,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:48,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:45:48,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:48,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:45:48,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:48,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:48,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:48,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:48,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:48,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 18:45:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:48,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:48,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:48,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:45:48,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:48,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 18:45:48,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:48,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:45:48,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:48,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:45:48,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:48,805 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 18:45:48,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706227111] [2020-10-27 18:45:48,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:45:48,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:45:48,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049875308] [2020-10-27 18:45:48,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:45:48,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:45:48,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:45:48,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:45:48,808 INFO L87 Difference]: Start difference. First operand 1377 states and 1850 transitions. Second operand 5 states. [2020-10-27 18:45:53,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:45:53,865 INFO L93 Difference]: Finished difference Result 3436 states and 4747 transitions. [2020-10-27 18:45:53,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:45:53,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-27 18:45:53,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:45:53,881 INFO L225 Difference]: With dead ends: 3436 [2020-10-27 18:45:53,881 INFO L226 Difference]: Without dead ends: 2065 [2020-10-27 18:45:53,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:45:53,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2020-10-27 18:45:53,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 2061. [2020-10-27 18:45:53,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2061 states. [2020-10-27 18:45:53,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 2767 transitions. [2020-10-27 18:45:53,954 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 2767 transitions. Word has length 222 [2020-10-27 18:45:53,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:45:53,957 INFO L481 AbstractCegarLoop]: Abstraction has 2061 states and 2767 transitions. [2020-10-27 18:45:53,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:45:53,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 2767 transitions. [2020-10-27 18:45:53,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-27 18:45:53,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:45:53,963 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:45:53,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:45:53,964 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:45:53,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:45:53,964 INFO L82 PathProgramCache]: Analyzing trace with hash 42098472, now seen corresponding path program 1 times [2020-10-27 18:45:53,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:45:53,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071949027] [2020-10-27 18:45:53,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:45:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:54,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:54,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:54,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:54,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:56,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:58,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:58,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:59,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:59,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 18:45:59,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:45:59,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-27 18:45:59,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:59,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:59,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-10-27 18:45:59,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 18:45:59,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:59,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:45:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:59,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:59,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:59,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:45:59,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:59,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:45:59,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:59,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:59,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:59,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:59,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:59,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:45:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:59,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:59,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:59,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:45:59,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:59,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:45:59,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:59,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:59,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:59,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:59,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 18:45:59,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 18:45:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:59,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:59,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:59,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:45:59,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:59,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 18:45:59,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:59,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:45:59,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:59,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:45:59,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:59,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 18:45:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:59,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:59,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:59,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:45:59,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:59,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 18:45:59,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:59,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:59,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:45:59,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 18:45:59,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:59,679 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 18:45:59,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071949027] [2020-10-27 18:45:59,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:45:59,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:45:59,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279177650] [2020-10-27 18:45:59,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:45:59,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:45:59,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:45:59,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:45:59,683 INFO L87 Difference]: Start difference. First operand 2061 states and 2767 transitions. Second operand 7 states. [2020-10-27 18:46:05,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:46:05,750 INFO L93 Difference]: Finished difference Result 4851 states and 6755 transitions. [2020-10-27 18:46:05,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:46:05,751 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 294 [2020-10-27 18:46:05,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:46:05,767 INFO L225 Difference]: With dead ends: 4851 [2020-10-27 18:46:05,768 INFO L226 Difference]: Without dead ends: 2796 [2020-10-27 18:46:05,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:46:05,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2020-10-27 18:46:05,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 2434. [2020-10-27 18:46:05,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2434 states. [2020-10-27 18:46:05,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2434 states to 2434 states and 3223 transitions. [2020-10-27 18:46:05,851 INFO L78 Accepts]: Start accepts. Automaton has 2434 states and 3223 transitions. Word has length 294 [2020-10-27 18:46:05,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:46:05,851 INFO L481 AbstractCegarLoop]: Abstraction has 2434 states and 3223 transitions. [2020-10-27 18:46:05,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:46:05,852 INFO L276 IsEmpty]: Start isEmpty. Operand 2434 states and 3223 transitions. [2020-10-27 18:46:05,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-27 18:46:05,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:46:05,858 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:46:05,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:46:05,859 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:46:05,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:46:05,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1697824896, now seen corresponding path program 1 times [2020-10-27 18:46:05,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:46:05,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779134522] [2020-10-27 18:46:05,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:46:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:05,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:05,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:06,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:06,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:09,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:10,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:10,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-27 18:46:10,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:46:10,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 18:46:10,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:10,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:10,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-10-27 18:46:10,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 18:46:10,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:11,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:46:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:11,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:11,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:11,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:46:11,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:11,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:46:11,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:11,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:11,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:46:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:11,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:11,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:11,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:46:11,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:11,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:46:11,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:11,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:11,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 18:46:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:11,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:11,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:11,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:46:11,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:11,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 18:46:11,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:46:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:46:11,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:11,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 18:46:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:11,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:11,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:11,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 18:46:11,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:11,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 18:46:11,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:11,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:11,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:46:11,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 18:46:11,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:46:11,552 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 251 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 18:46:11,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779134522] [2020-10-27 18:46:11,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:46:11,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:46:11,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392272405] [2020-10-27 18:46:11,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:46:11,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:46:11,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:46:11,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:46:11,556 INFO L87 Difference]: Start difference. First operand 2434 states and 3223 transitions. Second operand 7 states. [2020-10-27 18:46:17,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:46:17,243 INFO L93 Difference]: Finished difference Result 7330 states and 9904 transitions. [2020-10-27 18:46:17,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:46:17,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 314 [2020-10-27 18:46:17,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:46:17,273 INFO L225 Difference]: With dead ends: 7330 [2020-10-27 18:46:17,274 INFO L226 Difference]: Without dead ends: 4902 [2020-10-27 18:46:17,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:46:17,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4902 states. [2020-10-27 18:46:17,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4902 to 4528. [2020-10-27 18:46:17,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4528 states. [2020-10-27 18:46:17,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4528 states to 4528 states and 5592 transitions. [2020-10-27 18:46:17,399 INFO L78 Accepts]: Start accepts. Automaton has 4528 states and 5592 transitions. Word has length 314 [2020-10-27 18:46:17,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:46:17,400 INFO L481 AbstractCegarLoop]: Abstraction has 4528 states and 5592 transitions. [2020-10-27 18:46:17,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:46:17,400 INFO L276 IsEmpty]: Start isEmpty. Operand 4528 states and 5592 transitions. [2020-10-27 18:46:17,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-27 18:46:17,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:46:17,415 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:46:17,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:46:17,416 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:46:17,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:46:17,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1139729058, now seen corresponding path program 1 times [2020-10-27 18:46:17,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:46:17,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369876503] [2020-10-27 18:46:17,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:46:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:17,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:17,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:17,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:19,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:19,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:20,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:22,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:22,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 517 [2020-10-27 18:46:22,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:46:22,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 18:46:22,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:22,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:22,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 479 [2020-10-27 18:46:22,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 18:46:22,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:22,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:46:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:22,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:22,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:22,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:46:22,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:22,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 18:46:22,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:22,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:22,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:22,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:22,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:22,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:46:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:22,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:22,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:22,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:46:22,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:22,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:46:22,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:22,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:22,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:22,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:22,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:46:22,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:46:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:22,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:22,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:22,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:46:22,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:22,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 18:46:22,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:22,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:22,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:22,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:22,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:23,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:46:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:23,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:23,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:23,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 18:46:23,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:23,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 18:46:23,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:23,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:46:23,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:23,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 18:46:23,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:46:23,622 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2020-10-27 18:46:23,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369876503] [2020-10-27 18:46:23,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:46:23,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:46:23,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840265842] [2020-10-27 18:46:23,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:46:23,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:46:23,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:46:23,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:46:23,626 INFO L87 Difference]: Start difference. First operand 4528 states and 5592 transitions. Second operand 5 states. [2020-10-27 18:46:28,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:46:28,753 INFO L93 Difference]: Finished difference Result 10759 states and 13585 transitions. [2020-10-27 18:46:28,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:46:28,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 501 [2020-10-27 18:46:28,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:46:28,784 INFO L225 Difference]: With dead ends: 10759 [2020-10-27 18:46:28,784 INFO L226 Difference]: Without dead ends: 6237 [2020-10-27 18:46:28,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:46:28,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6237 states. [2020-10-27 18:46:28,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6237 to 6231. [2020-10-27 18:46:28,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6231 states. [2020-10-27 18:46:28,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6231 states to 6231 states and 7346 transitions. [2020-10-27 18:46:28,947 INFO L78 Accepts]: Start accepts. Automaton has 6231 states and 7346 transitions. Word has length 501 [2020-10-27 18:46:28,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:46:28,948 INFO L481 AbstractCegarLoop]: Abstraction has 6231 states and 7346 transitions. [2020-10-27 18:46:28,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:46:28,948 INFO L276 IsEmpty]: Start isEmpty. Operand 6231 states and 7346 transitions. [2020-10-27 18:46:28,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2020-10-27 18:46:28,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:46:28,975 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:46:28,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:46:28,976 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:46:28,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:46:28,977 INFO L82 PathProgramCache]: Analyzing trace with hash -818019890, now seen corresponding path program 1 times [2020-10-27 18:46:28,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:46:28,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815758749] [2020-10-27 18:46:28,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:46:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:29,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:29,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:29,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:31,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:31,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:33,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:34,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:34,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 605 [2020-10-27 18:46:34,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:46:34,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 18:46:34,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:34,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:34,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 376 [2020-10-27 18:46:34,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:46:34,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:34,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:46:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:34,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:34,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:34,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:46:34,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:34,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:46:34,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:34,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:34,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:34,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:34,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:34,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:46:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:34,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:34,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:34,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:46:34,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:34,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 18:46:34,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:34,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:34,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:34,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:34,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:34,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:46:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:34,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:34,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:34,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:46:34,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:34,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-27 18:46:34,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:34,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:46:34,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:34,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:46:34,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:34,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:46:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:34,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:34,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:34,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:46:34,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:34,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 18:46:34,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:34,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:34,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:46:34,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 18:46:34,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:35,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-10-27 18:46:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:35,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:35,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:35,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 18:46:35,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:35,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:46:35,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:35,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:35,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 18:46:35,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:35,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:35,369 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 261 proven. 70 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-27 18:46:35,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815758749] [2020-10-27 18:46:35,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:46:35,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:46:35,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714183704] [2020-10-27 18:46:35,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:46:35,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:46:35,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:46:35,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:46:35,372 INFO L87 Difference]: Start difference. First operand 6231 states and 7346 transitions. Second operand 8 states. [2020-10-27 18:46:47,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:46:47,146 INFO L93 Difference]: Finished difference Result 17628 states and 21132 transitions. [2020-10-27 18:46:47,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 18:46:47,147 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 587 [2020-10-27 18:46:47,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:46:47,199 INFO L225 Difference]: With dead ends: 17628 [2020-10-27 18:46:47,199 INFO L226 Difference]: Without dead ends: 11403 [2020-10-27 18:46:47,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-27 18:46:47,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11403 states. [2020-10-27 18:46:47,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11403 to 11052. [2020-10-27 18:46:47,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11052 states. [2020-10-27 18:46:47,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11052 states to 11052 states and 13124 transitions. [2020-10-27 18:46:47,496 INFO L78 Accepts]: Start accepts. Automaton has 11052 states and 13124 transitions. Word has length 587 [2020-10-27 18:46:47,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:46:47,497 INFO L481 AbstractCegarLoop]: Abstraction has 11052 states and 13124 transitions. [2020-10-27 18:46:47,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:46:47,497 INFO L276 IsEmpty]: Start isEmpty. Operand 11052 states and 13124 transitions. [2020-10-27 18:46:47,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2020-10-27 18:46:47,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:46:47,518 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:46:47,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:46:47,518 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:46:47,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:46:47,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1361396646, now seen corresponding path program 1 times [2020-10-27 18:46:47,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:46:47,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184190470] [2020-10-27 18:46:47,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:46:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:47,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:47,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:47,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:48,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:48,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:49,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:50,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:52,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:52,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 635 [2020-10-27 18:46:52,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:46:52,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 18:46:52,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:52,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 18:46:52,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 298 [2020-10-27 18:46:52,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 266 [2020-10-27 18:46:52,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:52,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:46:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:52,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:52,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:52,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:46:52,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:52,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:46:52,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:52,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:52,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:52,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:52,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:52,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:46:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:52,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:52,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:52,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:46:52,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:52,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:46:52,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:52,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:52,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:52,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:52,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:46:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:52,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:52,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:52,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:46:52,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:52,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:46:52,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:52,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:52,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-27 18:46:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:53,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:53,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:53,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:46:53,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:53,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 18:46:53,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:53,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:46:53,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:53,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:46:53,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:53,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-10-27 18:46:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:53,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:53,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:53,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:56,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:56,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 18:46:56,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:46:56,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3338 [2020-10-27 18:46:56,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:46:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:46:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 298 [2020-10-27 18:46:56,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:56,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:46:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:56,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:56,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:56,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 18:46:56,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:56,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:46:56,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:46:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:46:56,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 18:46:56,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:57,280 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 397 proven. 2 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2020-10-27 18:46:57,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184190470] [2020-10-27 18:46:57,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:46:57,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 18:46:57,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985244107] [2020-10-27 18:46:57,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 18:46:57,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:46:57,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 18:46:57,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 18:46:57,283 INFO L87 Difference]: Start difference. First operand 11052 states and 13124 transitions. Second operand 9 states. [2020-10-27 18:47:05,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:47:05,444 INFO L93 Difference]: Finished difference Result 22471 states and 26709 transitions. [2020-10-27 18:47:05,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:47:05,448 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 615 [2020-10-27 18:47:05,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:47:05,482 INFO L225 Difference]: With dead ends: 22471 [2020-10-27 18:47:05,483 INFO L226 Difference]: Without dead ends: 11762 [2020-10-27 18:47:05,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-27 18:47:05,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11762 states. [2020-10-27 18:47:05,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11762 to 11078. [2020-10-27 18:47:05,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11078 states. [2020-10-27 18:47:05,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11078 states to 11078 states and 13169 transitions. [2020-10-27 18:47:05,828 INFO L78 Accepts]: Start accepts. Automaton has 11078 states and 13169 transitions. Word has length 615 [2020-10-27 18:47:05,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:47:05,829 INFO L481 AbstractCegarLoop]: Abstraction has 11078 states and 13169 transitions. [2020-10-27 18:47:05,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 18:47:05,830 INFO L276 IsEmpty]: Start isEmpty. Operand 11078 states and 13169 transitions. [2020-10-27 18:47:05,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2020-10-27 18:47:05,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:47:05,851 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:47:05,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:47:05,852 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:47:05,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:47:05,853 INFO L82 PathProgramCache]: Analyzing trace with hash -2090895082, now seen corresponding path program 1 times [2020-10-27 18:47:05,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:47:05,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581238171] [2020-10-27 18:47:05,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:47:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:05,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:06,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:06,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:06,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:07,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:07,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:08,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:09,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:10,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:10,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 719 [2020-10-27 18:47:10,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 18:47:10,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-27 18:47:10,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:10,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:10,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 490 [2020-10-27 18:47:10,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:47:10,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:11,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:47:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:11,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:11,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:11,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:47:11,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:11,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:47:11,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:11,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:11,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:47:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:11,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:11,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:11,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:47:11,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:11,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:47:11,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:11,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:11,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:11,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:11,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:11,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:47:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:11,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:11,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:11,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:47:11,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:11,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 18:47:11,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:11,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:11,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:11,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:11,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:11,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:47:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:11,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:11,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:11,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:47:11,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:11,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 18:47:11,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:11,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:47:11,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:11,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 18:47:11,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:11,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 18:47:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:11,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:11,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:11,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:47:11,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:11,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 18:47:11,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:11,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:11,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:47:11,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 18:47:11,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:11,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2020-10-27 18:47:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:11,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:11,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:11,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 18:47:11,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:11,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:47:11,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:11,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 18:47:11,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:11,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:12,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 366 proven. 70 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2020-10-27 18:47:12,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581238171] [2020-10-27 18:47:12,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:47:12,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:47:12,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041481044] [2020-10-27 18:47:12,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:47:12,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:47:12,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:47:12,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:47:12,271 INFO L87 Difference]: Start difference. First operand 11078 states and 13169 transitions. Second operand 7 states. [2020-10-27 18:47:18,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:47:18,166 INFO L93 Difference]: Finished difference Result 22181 states and 26424 transitions. [2020-10-27 18:47:18,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 18:47:18,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 699 [2020-10-27 18:47:18,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:47:18,199 INFO L225 Difference]: With dead ends: 22181 [2020-10-27 18:47:18,199 INFO L226 Difference]: Without dead ends: 11446 [2020-10-27 18:47:18,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-27 18:47:18,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11446 states. [2020-10-27 18:47:18,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11446 to 11440. [2020-10-27 18:47:18,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11440 states. [2020-10-27 18:47:18,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11440 states to 11440 states and 13579 transitions. [2020-10-27 18:47:18,454 INFO L78 Accepts]: Start accepts. Automaton has 11440 states and 13579 transitions. Word has length 699 [2020-10-27 18:47:18,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:47:18,455 INFO L481 AbstractCegarLoop]: Abstraction has 11440 states and 13579 transitions. [2020-10-27 18:47:18,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:47:18,455 INFO L276 IsEmpty]: Start isEmpty. Operand 11440 states and 13579 transitions. [2020-10-27 18:47:18,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2020-10-27 18:47:18,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:47:18,479 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:47:18,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:47:18,479 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:47:18,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:47:18,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1789928632, now seen corresponding path program 1 times [2020-10-27 18:47:18,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:47:18,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080329068] [2020-10-27 18:47:18,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:47:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:18,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:18,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:18,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:19,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:19,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:23,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:23,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 818 [2020-10-27 18:47:23,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:47:23,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 18:47:23,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 376 [2020-10-27 18:47:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-27 18:47:23,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:23,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:47:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:23,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:23,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:23,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:47:23,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:23,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:47:23,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:23,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:23,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:47:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:23,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:23,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:23,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:47:23,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:23,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 18:47:23,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:23,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:23,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:23,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:23,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:23,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:47:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:23,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:24,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:24,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:47:24,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:24,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-27 18:47:24,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:47:24,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:24,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:47:24,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:24,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:47:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:24,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:24,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:24,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-27 18:47:24,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:24,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-27 18:47:24,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:24,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:24,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:47:24,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-27 18:47:24,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:24,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 656 [2020-10-27 18:47:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:24,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:24,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:24,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 18:47:24,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:24,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:47:24,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:24,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:24,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 18:47:24,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:24,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:25,586 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 483 proven. 115 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-27 18:47:25,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080329068] [2020-10-27 18:47:25,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:47:25,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:47:25,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46101352] [2020-10-27 18:47:25,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:47:25,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:47:25,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:47:25,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:47:25,589 INFO L87 Difference]: Start difference. First operand 11440 states and 13579 transitions. Second operand 8 states. [2020-10-27 18:47:33,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:47:33,916 INFO L93 Difference]: Finished difference Result 26814 states and 33348 transitions. [2020-10-27 18:47:33,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:47:33,918 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 800 [2020-10-27 18:47:33,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:47:33,975 INFO L225 Difference]: With dead ends: 26814 [2020-10-27 18:47:33,975 INFO L226 Difference]: Without dead ends: 15717 [2020-10-27 18:47:33,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:47:34,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15717 states. [2020-10-27 18:47:34,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15717 to 15193. [2020-10-27 18:47:34,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15193 states. [2020-10-27 18:47:34,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15193 states to 15193 states and 18127 transitions. [2020-10-27 18:47:34,409 INFO L78 Accepts]: Start accepts. Automaton has 15193 states and 18127 transitions. Word has length 800 [2020-10-27 18:47:34,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:47:34,411 INFO L481 AbstractCegarLoop]: Abstraction has 15193 states and 18127 transitions. [2020-10-27 18:47:34,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:47:34,411 INFO L276 IsEmpty]: Start isEmpty. Operand 15193 states and 18127 transitions. [2020-10-27 18:47:34,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2020-10-27 18:47:34,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:47:34,443 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:47:34,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:47:34,443 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:47:34,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:47:34,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1901164580, now seen corresponding path program 1 times [2020-10-27 18:47:34,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:47:34,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944042178] [2020-10-27 18:47:34,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:47:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:34,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:34,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:35,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:35,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:36,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:37,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:39,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:39,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 860 [2020-10-27 18:47:39,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:47:39,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 18:47:39,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:39,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:39,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 619 [2020-10-27 18:47:39,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:47:39,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:39,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:47:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:39,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:39,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:39,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:47:39,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:39,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:47:39,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:39,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:39,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:39,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:39,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:39,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:47:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:39,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:39,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:39,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:47:39,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:39,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:47:39,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:39,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:39,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:39,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:39,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:39,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:47:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:39,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:39,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:39,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:47:39,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:39,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 18:47:39,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:39,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:39,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:47:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:40,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:40,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:40,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-27 18:47:40,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:40,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 18:47:40,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:40,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:47:40,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:40,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-27 18:47:40,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:40,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2020-10-27 18:47:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:40,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:40,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:40,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:47:40,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:40,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 18:47:40,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:47:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 18:47:40,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:40,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 684 [2020-10-27 18:47:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:40,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:40,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:40,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 18:47:40,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:40,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 18:47:40,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:40,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:40,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-27 18:47:40,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:40,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:40,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 366 proven. 70 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2020-10-27 18:47:40,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944042178] [2020-10-27 18:47:40,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:47:40,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:47:40,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832206034] [2020-10-27 18:47:40,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:47:40,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:47:40,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:47:40,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:47:40,871 INFO L87 Difference]: Start difference. First operand 15193 states and 18127 transitions. Second operand 7 states. [2020-10-27 18:47:46,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:47:46,722 INFO L93 Difference]: Finished difference Result 30725 states and 36618 transitions. [2020-10-27 18:47:46,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:47:46,723 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 840 [2020-10-27 18:47:46,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:47:46,762 INFO L225 Difference]: With dead ends: 30725 [2020-10-27 18:47:46,762 INFO L226 Difference]: Without dead ends: 15875 [2020-10-27 18:47:46,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:47:46,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15875 states. [2020-10-27 18:47:47,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15875 to 15191. [2020-10-27 18:47:47,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15191 states. [2020-10-27 18:47:47,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15191 states to 15191 states and 18099 transitions. [2020-10-27 18:47:47,069 INFO L78 Accepts]: Start accepts. Automaton has 15191 states and 18099 transitions. Word has length 840 [2020-10-27 18:47:47,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:47:47,070 INFO L481 AbstractCegarLoop]: Abstraction has 15191 states and 18099 transitions. [2020-10-27 18:47:47,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:47:47,070 INFO L276 IsEmpty]: Start isEmpty. Operand 15191 states and 18099 transitions. [2020-10-27 18:47:47,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 912 [2020-10-27 18:47:47,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:47:47,096 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:47:47,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:47:47,096 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:47:47,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:47:47,097 INFO L82 PathProgramCache]: Analyzing trace with hash -320419362, now seen corresponding path program 1 times [2020-10-27 18:47:47,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:47:47,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303952016] [2020-10-27 18:47:47,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:47:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:47,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:47,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:47,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:47,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:50,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:52,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:52,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 933 [2020-10-27 18:47:52,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:47:52,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-27 18:47:52,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:47:52,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-27 18:47:52,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-10-27 18:47:52,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:52,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:47:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:52,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:52,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:52,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:47:52,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:52,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:47:52,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:52,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:52,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:52,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:52,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:52,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:47:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:52,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:52,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:52,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:47:52,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:52,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 18:47:52,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:52,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:52,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:47:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:52,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:52,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:52,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:47:52,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:52,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 18:47:52,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:52,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:47:52,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:52,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 18:47:52,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:52,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-27 18:47:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:52,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:52,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:53,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:53,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-27 18:47:53,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:47:53,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 727 [2020-10-27 18:47:53,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:53,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:47:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:47:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-27 18:47:53,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:53,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:47:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:53,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:53,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:53,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 18:47:53,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:53,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:47:53,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:47:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 18:47:53,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:53,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2020-10-27 18:47:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:54,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:54,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:54,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-27 18:47:54,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:54,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-27 18:47:54,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:54,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:54,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-27 18:47:54,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:54,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:54,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 767 [2020-10-27 18:47:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:54,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:54,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:54,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 18:47:54,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:54,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 18:47:54,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:54,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:54,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 18:47:54,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:54,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:55,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 329 proven. 396 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2020-10-27 18:47:55,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303952016] [2020-10-27 18:47:55,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:47:55,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 18:47:55,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380511385] [2020-10-27 18:47:55,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 18:47:55,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:47:55,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 18:47:55,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 18:47:55,931 INFO L87 Difference]: Start difference. First operand 15191 states and 18099 transitions. Second operand 9 states. [2020-10-27 18:48:01,369 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2020-10-27 18:48:04,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:48:04,801 INFO L93 Difference]: Finished difference Result 30391 states and 36280 transitions. [2020-10-27 18:48:04,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 18:48:04,802 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 911 [2020-10-27 18:48:04,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:48:04,846 INFO L225 Difference]: With dead ends: 30391 [2020-10-27 18:48:04,846 INFO L226 Difference]: Without dead ends: 15543 [2020-10-27 18:48:04,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-10-27 18:48:04,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15543 states. [2020-10-27 18:48:05,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15543 to 15539. [2020-10-27 18:48:05,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15539 states. [2020-10-27 18:48:05,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15539 states to 15539 states and 18472 transitions. [2020-10-27 18:48:05,175 INFO L78 Accepts]: Start accepts. Automaton has 15539 states and 18472 transitions. Word has length 911 [2020-10-27 18:48:05,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:48:05,176 INFO L481 AbstractCegarLoop]: Abstraction has 15539 states and 18472 transitions. [2020-10-27 18:48:05,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 18:48:05,176 INFO L276 IsEmpty]: Start isEmpty. Operand 15539 states and 18472 transitions. [2020-10-27 18:48:05,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2020-10-27 18:48:05,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:48:05,205 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:48:05,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 18:48:05,205 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:48:05,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:48:05,206 INFO L82 PathProgramCache]: Analyzing trace with hash 231957628, now seen corresponding path program 1 times [2020-10-27 18:48:05,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:48:05,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847493734] [2020-10-27 18:48:05,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:48:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:05,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:05,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:05,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:07,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:08,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:10,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:10,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 980 [2020-10-27 18:48:10,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:48:10,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-27 18:48:10,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:10,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:48:10,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 18:48:10,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 543 [2020-10-27 18:48:10,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:10,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:48:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:10,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:10,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:10,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:48:10,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:10,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:48:10,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:10,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:10,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:10,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:10,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:10,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:48:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:10,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:10,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:10,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:48:10,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:10,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 18:48:10,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:10,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:48:10,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:10,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 18:48:10,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:10,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:48:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:10,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:10,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:11,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:11,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:48:11,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:48:11,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-10-27 18:48:11,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:11,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:48:11,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:48:11,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:48:11,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:11,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:48:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:11,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:11,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:11,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 18:48:11,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:11,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-27 18:48:11,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:11,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:48:11,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:48:11,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 266 [2020-10-27 18:48:11,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:48:12,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2020-10-27 18:48:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:12,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:12,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:12,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 18:48:12,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:12,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 18:48:12,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:12,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:12,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 18:48:12,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:12,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:12,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:48:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:12,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:12,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:12,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 18:48:12,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:12,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:48:12,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:12,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:12,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1188 backedges. 296 proven. 534 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2020-10-27 18:48:12,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847493734] [2020-10-27 18:48:12,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:48:12,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:48:12,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364640821] [2020-10-27 18:48:12,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:48:12,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:48:12,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:48:12,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:48:12,983 INFO L87 Difference]: Start difference. First operand 15539 states and 18472 transitions. Second operand 7 states. [2020-10-27 18:48:18,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:48:18,974 INFO L93 Difference]: Finished difference Result 34169 states and 40723 transitions. [2020-10-27 18:48:18,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:48:18,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 960 [2020-10-27 18:48:18,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:48:19,007 INFO L225 Difference]: With dead ends: 34169 [2020-10-27 18:48:19,007 INFO L226 Difference]: Without dead ends: 14737 [2020-10-27 18:48:19,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:48:19,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14737 states. [2020-10-27 18:48:19,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14737 to 13339. [2020-10-27 18:48:19,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13339 states. [2020-10-27 18:48:19,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13339 states to 13339 states and 14104 transitions. [2020-10-27 18:48:19,287 INFO L78 Accepts]: Start accepts. Automaton has 13339 states and 14104 transitions. Word has length 960 [2020-10-27 18:48:19,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:48:19,288 INFO L481 AbstractCegarLoop]: Abstraction has 13339 states and 14104 transitions. [2020-10-27 18:48:19,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:48:19,288 INFO L276 IsEmpty]: Start isEmpty. Operand 13339 states and 14104 transitions. [2020-10-27 18:48:19,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2020-10-27 18:48:19,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:48:19,316 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:48:19,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 18:48:19,316 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:48:19,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:48:19,317 INFO L82 PathProgramCache]: Analyzing trace with hash 742584770, now seen corresponding path program 1 times [2020-10-27 18:48:19,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:48:19,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950456879] [2020-10-27 18:48:19,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:48:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:19,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:19,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:19,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:21,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:24,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:24,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1105 [2020-10-27 18:48:24,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:48:24,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 18:48:24,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:24,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:48:24,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 358 [2020-10-27 18:48:24,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-10-27 18:48:24,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:24,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:48:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:24,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:24,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:24,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:48:24,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:24,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:48:24,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:24,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:24,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:24,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:24,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:24,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:48:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:24,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:24,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:24,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:48:24,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:24,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:48:24,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:24,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:24,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:24,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:24,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:24,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:48:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:24,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:24,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:24,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 18:48:24,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:24,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:48:24,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:24,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:24,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:24,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:24,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:24,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 18:48:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:24,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:24,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:24,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:48:24,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:24,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 18:48:24,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:48:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 18:48:24,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:24,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-27 18:48:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:24,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:25,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:25,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-27 18:48:25,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:25,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-10-27 18:48:25,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:25,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:48:25,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:48:25,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-27 18:48:25,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:25,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:48:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:25,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:25,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:25,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 18:48:25,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:25,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:48:25,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:25,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:48:25,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:48:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 18:48:25,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:25,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 653 [2020-10-27 18:48:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:26,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:26,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:26,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-27 18:48:26,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:26,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 18:48:26,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:26,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:26,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-27 18:48:26,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:26,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:26,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 937 [2020-10-27 18:48:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:26,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:26,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:26,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 18:48:26,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:26,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 18:48:26,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:26,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:26,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 18:48:26,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:26,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:27,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 537 proven. 396 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2020-10-27 18:48:27,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950456879] [2020-10-27 18:48:27,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:48:27,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:48:27,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570535472] [2020-10-27 18:48:27,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:48:27,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:48:27,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:48:27,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:48:27,274 INFO L87 Difference]: Start difference. First operand 13339 states and 14104 transitions. Second operand 8 states. [2020-10-27 18:48:31,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:48:31,378 INFO L93 Difference]: Finished difference Result 27693 states and 29324 transitions. [2020-10-27 18:48:31,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:48:31,380 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1081 [2020-10-27 18:48:31,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:48:31,409 INFO L225 Difference]: With dead ends: 27693 [2020-10-27 18:48:31,410 INFO L226 Difference]: Without dead ends: 14360 [2020-10-27 18:48:31,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:48:31,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14360 states. [2020-10-27 18:48:31,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14360 to 14352. [2020-10-27 18:48:31,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14352 states. [2020-10-27 18:48:31,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14352 states to 14352 states and 15143 transitions. [2020-10-27 18:48:31,680 INFO L78 Accepts]: Start accepts. Automaton has 14352 states and 15143 transitions. Word has length 1081 [2020-10-27 18:48:31,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:48:31,681 INFO L481 AbstractCegarLoop]: Abstraction has 14352 states and 15143 transitions. [2020-10-27 18:48:31,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:48:31,681 INFO L276 IsEmpty]: Start isEmpty. Operand 14352 states and 15143 transitions. [2020-10-27 18:48:31,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1303 [2020-10-27 18:48:31,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:48:31,712 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:48:31,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 18:48:31,712 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:48:31,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:48:31,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1109661652, now seen corresponding path program 1 times [2020-10-27 18:48:31,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:48:31,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365197290] [2020-10-27 18:48:31,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:48:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:31,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:32,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:32,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:32,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:33,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:36,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:36,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1326 [2020-10-27 18:48:36,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:48:36,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 18:48:36,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:36,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:48:36,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 447 [2020-10-27 18:48:36,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 18:48:36,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:37,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:48:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:37,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:37,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:37,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:48:37,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:37,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:48:37,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:37,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:37,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:48:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:37,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:37,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:37,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:48:37,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:37,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 18:48:37,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:37,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:37,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:37,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:37,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:37,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:48:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:37,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:37,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:37,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 18:48:37,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:37,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 18:48:37,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:37,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:37,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-27 18:48:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:37,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:37,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:37,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:48:37,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:37,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 18:48:37,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:37,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:48:37,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:37,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 18:48:37,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:37,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-10-27 18:48:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:37,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:37,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:37,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:48:37,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:37,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-27 18:48:37,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:48:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:48:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:48:37,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:37,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 714 [2020-10-27 18:48:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:37,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:38,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:38,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 18:48:38,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:38,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 18:48:38,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:38,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:38,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-27 18:48:38,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:38,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:38,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 979 [2020-10-27 18:48:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:38,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:38,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:38,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 18:48:38,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:38,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 18:48:38,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 18:48:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:38,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:38,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:48:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:38,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:38,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:38,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 18:48:38,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:38,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:48:38,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:38,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 626 proven. 534 refuted. 0 times theorem prover too weak. 1363 trivial. 0 not checked. [2020-10-27 18:48:39,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365197290] [2020-10-27 18:48:39,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:48:39,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:48:39,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112064420] [2020-10-27 18:48:39,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:48:39,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:48:39,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:48:39,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:48:39,382 INFO L87 Difference]: Start difference. First operand 14352 states and 15143 transitions. Second operand 7 states. [2020-10-27 18:48:45,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:48:45,223 INFO L93 Difference]: Finished difference Result 29043 states and 30639 transitions. [2020-10-27 18:48:45,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:48:45,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1302 [2020-10-27 18:48:45,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:48:45,254 INFO L225 Difference]: With dead ends: 29043 [2020-10-27 18:48:45,254 INFO L226 Difference]: Without dead ends: 14697 [2020-10-27 18:48:45,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:48:45,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14697 states. [2020-10-27 18:48:45,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14697 to 13678. [2020-10-27 18:48:45,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13678 states. [2020-10-27 18:48:45,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13678 states to 13678 states and 14362 transitions. [2020-10-27 18:48:45,520 INFO L78 Accepts]: Start accepts. Automaton has 13678 states and 14362 transitions. Word has length 1302 [2020-10-27 18:48:45,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:48:45,521 INFO L481 AbstractCegarLoop]: Abstraction has 13678 states and 14362 transitions. [2020-10-27 18:48:45,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:48:45,521 INFO L276 IsEmpty]: Start isEmpty. Operand 13678 states and 14362 transitions. [2020-10-27 18:48:45,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1314 [2020-10-27 18:48:45,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:48:45,552 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:48:45,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 18:48:45,553 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:48:45,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:48:45,553 INFO L82 PathProgramCache]: Analyzing trace with hash -438968394, now seen corresponding path program 1 times [2020-10-27 18:48:45,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:48:45,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867917201] [2020-10-27 18:48:45,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:48:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:45,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:46,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:46,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:49,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:50,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:50,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1335 [2020-10-27 18:48:50,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:48:50,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-27 18:48:50,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:48:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 456 [2020-10-27 18:48:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 18:48:50,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:50,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:48:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:50,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:50,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:50,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:48:50,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:50,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:48:50,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:50,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:50,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:50,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:50,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:51,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:48:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:51,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:51,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:51,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:48:51,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:51,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 18:48:51,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:51,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:51,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:51,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:51,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:51,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:48:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:51,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:51,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:51,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:48:51,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:51,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 18:48:51,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:48:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 18:48:51,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:51,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-27 18:48:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:51,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:51,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:51,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:48:51,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:51,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-27 18:48:51,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:51,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:48:51,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:48:51,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:48:51,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:51,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2020-10-27 18:48:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:51,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:51,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:51,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 18:48:51,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:51,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 18:48:51,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:51,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:51,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-27 18:48:51,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:51,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:52,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 990 [2020-10-27 18:48:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:52,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:52,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:52,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 18:48:52,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:52,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 18:48:52,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:52,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:52,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 18:48:52,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:52,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:52,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:48:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:52,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:52,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:52,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 18:48:52,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:52,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:48:52,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:52,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:52,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:52,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:52,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:53,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2470 backedges. 599 proven. 534 refuted. 0 times theorem prover too weak. 1337 trivial. 0 not checked. [2020-10-27 18:48:53,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867917201] [2020-10-27 18:48:53,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:48:53,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:48:53,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184283559] [2020-10-27 18:48:53,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:48:53,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:48:53,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:48:53,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:48:53,842 INFO L87 Difference]: Start difference. First operand 13678 states and 14362 transitions. Second operand 7 states.