/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem15_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:50:32,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:50:32,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:50:32,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:50:32,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:50:32,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:50:32,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:50:32,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:50:32,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:50:32,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:50:32,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:50:32,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:50:32,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:50:32,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:50:32,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:50:32,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:50:32,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:50:32,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:50:32,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:50:32,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:50:32,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:50:32,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:50:32,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:50:32,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:50:32,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:50:32,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:50:32,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:50:32,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:50:32,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:50:32,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:50:32,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:50:32,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:50:32,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:50:32,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:50:32,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:50:32,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:50:32,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:50:32,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:50:32,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:50:32,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:50:32,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:50:32,743 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 [2020-10-29 07:50:32,781 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:50:32,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:50:32,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:50:32,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:50:32,784 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:50:32,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:50:32,785 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:50:32,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:50:32,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:50:32,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:50:32,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:50:32,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:50:32,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:50:32,786 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:50:32,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:50:32,787 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:50:32,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:50:32,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:50:32,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:50:32,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:50:32,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:50:32,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:50:32,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:50:32,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:50:32,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:50:32,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:50:32,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:50:32,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:50:32,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:50:32,790 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:50:33,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:50:33,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:50:33,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:50:33,240 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:50:33,241 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:50:33,243 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label42.c [2020-10-29 07:50:33,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6eb32a75c/1839ce9d6f8a48edb4feb766efcf59d8/FLAG5d871cf21 [2020-10-29 07:50:34,137 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:50:34,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label42.c [2020-10-29 07:50:34,168 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6eb32a75c/1839ce9d6f8a48edb4feb766efcf59d8/FLAG5d871cf21 [2020-10-29 07:50:34,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6eb32a75c/1839ce9d6f8a48edb4feb766efcf59d8 [2020-10-29 07:50:34,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:50:34,324 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:50:34,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:50:34,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:50:34,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:50:34,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:50:34" (1/1) ... [2020-10-29 07:50:34,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ceeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:50:34, skipping insertion in model container [2020-10-29 07:50:34,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:50:34" (1/1) ... [2020-10-29 07:50:34,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:50:34,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:50:35,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:50:35,346 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:50:35,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:50:35,632 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:50:35,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:50:35 WrapperNode [2020-10-29 07:50:35,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:50:35,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:50:35,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:50:35,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:50:35,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:50:35" (1/1) ... [2020-10-29 07:50:35,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:50:35" (1/1) ... [2020-10-29 07:50:35,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:50:35" (1/1) ... [2020-10-29 07:50:35,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:50:35" (1/1) ... [2020-10-29 07:50:35,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:50:35" (1/1) ... [2020-10-29 07:50:35,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:50:35" (1/1) ... [2020-10-29 07:50:35,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:50:35" (1/1) ... [2020-10-29 07:50:35,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:50:35,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:50:35,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:50:35,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:50:35,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:50:35" (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 [2020-10-29 07:50:35,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:50:35,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:50:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:50:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:50:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:50:35,917 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:50:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:50:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:50:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:50:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:50:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:50:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:50:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:50:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:50:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:50:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:50:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:50:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:50:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:50:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:50:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:50:38,892 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:50:38,893 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:50:38,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:50:38 BoogieIcfgContainer [2020-10-29 07:50:38,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:50:38,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:50:38,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:50:38,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:50:38,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:50:34" (1/3) ... [2020-10-29 07:50:38,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a85d9f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:50:38, skipping insertion in model container [2020-10-29 07:50:38,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:50:35" (2/3) ... [2020-10-29 07:50:38,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a85d9f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:50:38, skipping insertion in model container [2020-10-29 07:50:38,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:50:38" (3/3) ... [2020-10-29 07:50:38,904 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label42.c [2020-10-29 07:50:38,916 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:50:38,922 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:50:38,935 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:50:38,965 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:50:38,965 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:50:38,965 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:50:38,965 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:50:38,965 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:50:38,965 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:50:38,966 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:50:38,966 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:50:38,992 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:50:39,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 07:50:39,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:39,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:50:39,002 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:39,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:39,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1619361537, now seen corresponding path program 1 times [2020-10-29 07:50:39,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:39,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667271521] [2020-10-29 07:50:39,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:39,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:39,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:39,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 07:50:39,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:39,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-10-29 07:50:39,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:39,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:39,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:50:39,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:50:39,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 07:50:39,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:50:39,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:39,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:39,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:39,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:39,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:39,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:50:39,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:39,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:50:39,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:50:40,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667271521] [2020-10-29 07:50:40,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:50:40,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:50:40,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515222956] [2020-10-29 07:50:40,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:50:40,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:40,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:50:40,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:50:40,054 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 5 states. [2020-10-29 07:50:47,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:47,697 INFO L93 Difference]: Finished difference Result 1589 states and 2889 transitions. [2020-10-29 07:50:47,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:50:47,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-10-29 07:50:47,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:47,733 INFO L225 Difference]: With dead ends: 1589 [2020-10-29 07:50:47,733 INFO L226 Difference]: Without dead ends: 1050 [2020-10-29 07:50:47,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:50:47,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-10-29 07:50:47,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1025. [2020-10-29 07:50:47,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2020-10-29 07:50:47,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1567 transitions. [2020-10-29 07:50:47,869 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1567 transitions. Word has length 53 [2020-10-29 07:50:47,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:47,869 INFO L481 AbstractCegarLoop]: Abstraction has 1025 states and 1567 transitions. [2020-10-29 07:50:47,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:50:47,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1567 transitions. [2020-10-29 07:50:47,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 07:50:47,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:47,878 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, 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] [2020-10-29 07:50:47,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:50:47,878 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:47,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:47,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1995033707, now seen corresponding path program 1 times [2020-10-29 07:50:47,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:47,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603631925] [2020-10-29 07:50:47,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:47,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:48,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:49,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:50,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:50,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 07:50:50,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:50:50,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2344 [2020-10-29 07:50:50,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:50,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:50,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:50:50,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:50:50,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 07:50:50,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:50:50,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:50,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:50,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:50,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:50,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:50,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 07:50:50,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:50,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:50,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:50:50,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:50:50,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:50,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:50,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:50,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 07:50:50,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:50,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-29 07:50:50,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:50,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:50,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:50,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:50,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 07:50:50,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:50,879 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:50:50,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603631925] [2020-10-29 07:50:50,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:50:50,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:50:50,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63202256] [2020-10-29 07:50:50,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:50:50,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:50,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:50:50,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:50:50,886 INFO L87 Difference]: Start difference. First operand 1025 states and 1567 transitions. Second operand 7 states. [2020-10-29 07:51:00,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:00,858 INFO L93 Difference]: Finished difference Result 2725 states and 4240 transitions. [2020-10-29 07:51:00,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:51:00,860 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-10-29 07:51:00,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:00,873 INFO L225 Difference]: With dead ends: 2725 [2020-10-29 07:51:00,874 INFO L226 Difference]: Without dead ends: 1706 [2020-10-29 07:51:00,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:51:00,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2020-10-29 07:51:00,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1663. [2020-10-29 07:51:00,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1663 states. [2020-10-29 07:51:00,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2215 transitions. [2020-10-29 07:51:00,962 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2215 transitions. Word has length 125 [2020-10-29 07:51:00,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:00,964 INFO L481 AbstractCegarLoop]: Abstraction has 1663 states and 2215 transitions. [2020-10-29 07:51:00,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:51:00,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2215 transitions. [2020-10-29 07:51:00,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 07:51:00,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:00,978 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, 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] [2020-10-29 07:51:00,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:51:00,979 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:00,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:00,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1199812347, now seen corresponding path program 1 times [2020-10-29 07:51:00,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:00,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410796630] [2020-10-29 07:51:00,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:01,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:01,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:02,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:02,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 07:51:02,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:51:02,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1432 [2020-10-29 07:51:02,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:02,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:02,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:51:02,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:51:02,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:51:02,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:02,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:02,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:02,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:02,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:02,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:02,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:51:02,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:02,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:02,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:02,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:02,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:51:02,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:02,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:02,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:02,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:02,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:51:02,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:02,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-29 07:51:02,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:02,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:02,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:02,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:02,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:51:02,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:03,007 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:51:03,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410796630] [2020-10-29 07:51:03,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:51:03,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:51:03,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219753141] [2020-10-29 07:51:03,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:51:03,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:03,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:51:03,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:51:03,014 INFO L87 Difference]: Start difference. First operand 1663 states and 2215 transitions. Second operand 7 states. [2020-10-29 07:51:10,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:10,429 INFO L93 Difference]: Finished difference Result 3044 states and 4127 transitions. [2020-10-29 07:51:10,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:51:10,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-29 07:51:10,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:10,441 INFO L225 Difference]: With dead ends: 3044 [2020-10-29 07:51:10,442 INFO L226 Difference]: Without dead ends: 1694 [2020-10-29 07:51:10,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:51:10,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2020-10-29 07:51:10,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1669. [2020-10-29 07:51:10,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1669 states. [2020-10-29 07:51:10,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2198 transitions. [2020-10-29 07:51:10,502 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2198 transitions. Word has length 133 [2020-10-29 07:51:10,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:10,503 INFO L481 AbstractCegarLoop]: Abstraction has 1669 states and 2198 transitions. [2020-10-29 07:51:10,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:51:10,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2198 transitions. [2020-10-29 07:51:10,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-29 07:51:10,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:10,507 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:51:10,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:51:10,508 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:10,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:10,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1790876743, now seen corresponding path program 1 times [2020-10-29 07:51:10,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:10,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084714678] [2020-10-29 07:51:10,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:10,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:10,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:10,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:11,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:15,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:15,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-29 07:51:15,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:51:15,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 07:51:15,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:15,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:15,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:51:15,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:51:15,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-29 07:51:15,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:15,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:15,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:15,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:15,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:15,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:15,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:51:15,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:15,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:15,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:15,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:15,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:51:15,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:15,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:15,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:15,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:16,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:16,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:51:16,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:51:16,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-29 07:51:16,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:16,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:16,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:16,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:16,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:51:16,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:16,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:51:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:16,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:16,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:16,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:51:16,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:16,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 07:51:16,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:16,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:16,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:16,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:16,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:51:16,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:16,343 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:51:16,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084714678] [2020-10-29 07:51:16,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:16,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:51:16,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691845823] [2020-10-29 07:51:16,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:51:16,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:16,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:51:16,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:51:16,346 INFO L87 Difference]: Start difference. First operand 1669 states and 2198 transitions. Second operand 8 states. [2020-10-29 07:51:27,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:27,049 INFO L93 Difference]: Finished difference Result 5620 states and 7857 transitions. [2020-10-29 07:51:27,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 07:51:27,050 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 228 [2020-10-29 07:51:27,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:27,075 INFO L225 Difference]: With dead ends: 5620 [2020-10-29 07:51:27,076 INFO L226 Difference]: Without dead ends: 4264 [2020-10-29 07:51:27,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:51:27,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2020-10-29 07:51:27,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4240. [2020-10-29 07:51:27,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4240 states. [2020-10-29 07:51:27,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4240 states to 4240 states and 5338 transitions. [2020-10-29 07:51:27,220 INFO L78 Accepts]: Start accepts. Automaton has 4240 states and 5338 transitions. Word has length 228 [2020-10-29 07:51:27,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:27,222 INFO L481 AbstractCegarLoop]: Abstraction has 4240 states and 5338 transitions. [2020-10-29 07:51:27,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:51:27,222 INFO L276 IsEmpty]: Start isEmpty. Operand 4240 states and 5338 transitions. [2020-10-29 07:51:27,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-29 07:51:27,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:27,229 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:51:27,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:51:27,230 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:27,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:27,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1628102421, now seen corresponding path program 1 times [2020-10-29 07:51:27,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:27,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365921679] [2020-10-29 07:51:27,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:27,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:27,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:29,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:29,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-29 07:51:29,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:51:29,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1710 [2020-10-29 07:51:29,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:29,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:51:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:51:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 342 [2020-10-29 07:51:29,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:29,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:29,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:29,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:29,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:29,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:29,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:51:29,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:29,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:29,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:29,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:29,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:51:29,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:29,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:29,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:29,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:29,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:51:29,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:29,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 551 [2020-10-29 07:51:29,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:29,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-29 07:51:29,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:30,361 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:51:30,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365921679] [2020-10-29 07:51:30,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:30,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:51:30,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201941338] [2020-10-29 07:51:30,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:51:30,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:30,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:51:30,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:51:30,364 INFO L87 Difference]: Start difference. First operand 4240 states and 5338 transitions. Second operand 6 states. [2020-10-29 07:51:39,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:39,090 INFO L93 Difference]: Finished difference Result 10733 states and 13841 transitions. [2020-10-29 07:51:39,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:51:39,098 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 339 [2020-10-29 07:51:39,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:39,139 INFO L225 Difference]: With dead ends: 10733 [2020-10-29 07:51:39,139 INFO L226 Difference]: Without dead ends: 6806 [2020-10-29 07:51:39,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:51:39,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6806 states. [2020-10-29 07:51:39,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6806 to 6750. [2020-10-29 07:51:39,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6750 states. [2020-10-29 07:51:39,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6750 states to 6750 states and 8233 transitions. [2020-10-29 07:51:39,365 INFO L78 Accepts]: Start accepts. Automaton has 6750 states and 8233 transitions. Word has length 339 [2020-10-29 07:51:39,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:39,367 INFO L481 AbstractCegarLoop]: Abstraction has 6750 states and 8233 transitions. [2020-10-29 07:51:39,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:51:39,367 INFO L276 IsEmpty]: Start isEmpty. Operand 6750 states and 8233 transitions. [2020-10-29 07:51:39,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-29 07:51:39,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:39,375 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:51:39,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:51:39,375 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:39,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:39,376 INFO L82 PathProgramCache]: Analyzing trace with hash -780044874, now seen corresponding path program 1 times [2020-10-29 07:51:39,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:39,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918543473] [2020-10-29 07:51:39,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:39,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:39,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:39,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:40,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:41,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:44,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:44,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-29 07:51:44,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:51:44,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 07:51:44,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:44,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:44,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:51:44,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:51:44,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-29 07:51:44,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:44,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:44,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:44,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:44,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:44,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:44,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:51:44,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:44,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:44,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:44,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:44,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:44,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:44,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:44,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:44,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:44,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:51:44,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:44,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 07:51:44,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:44,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:51:44,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:44,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:51:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:44,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:44,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:45,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:45,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:51:45,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:51:45,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-10-29 07:51:45,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:45,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:45,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:51:45,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 135 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:51:45,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918543473] [2020-10-29 07:51:45,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:45,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:51:45,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383180112] [2020-10-29 07:51:45,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:51:45,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:45,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:51:45,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:51:45,956 INFO L87 Difference]: Start difference. First operand 6750 states and 8233 transitions. Second operand 6 states. [2020-10-29 07:51:55,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:55,294 INFO L93 Difference]: Finished difference Result 17101 states and 22351 transitions. [2020-10-29 07:51:55,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:51:55,296 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 348 [2020-10-29 07:51:55,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:55,351 INFO L225 Difference]: With dead ends: 17101 [2020-10-29 07:51:55,352 INFO L226 Difference]: Without dead ends: 8731 [2020-10-29 07:51:55,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:51:55,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8731 states. [2020-10-29 07:51:55,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8731 to 8620. [2020-10-29 07:51:55,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8620 states. [2020-10-29 07:51:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8620 states to 8620 states and 9999 transitions. [2020-10-29 07:51:55,671 INFO L78 Accepts]: Start accepts. Automaton has 8620 states and 9999 transitions. Word has length 348 [2020-10-29 07:51:55,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:55,671 INFO L481 AbstractCegarLoop]: Abstraction has 8620 states and 9999 transitions. [2020-10-29 07:51:55,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:51:55,671 INFO L276 IsEmpty]: Start isEmpty. Operand 8620 states and 9999 transitions. [2020-10-29 07:51:55,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2020-10-29 07:51:55,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:55,682 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:51:55,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:51:55,683 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:55,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:55,684 INFO L82 PathProgramCache]: Analyzing trace with hash 911906590, now seen corresponding path program 1 times [2020-10-29 07:51:55,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:55,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281739246] [2020-10-29 07:51:55,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:55,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:56,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:58,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:58,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 452 [2020-10-29 07:51:58,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:51:58,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2644 [2020-10-29 07:51:58,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:58,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:58,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:58,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:51:58,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:51:58,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:58,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:58,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:58,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:58,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:58,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:58,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:51:58,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:58,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:58,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:58,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:58,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:58,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:51:58,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:58,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:59,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:59,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:51:59,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:59,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-29 07:51:59,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:59,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:59,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:59,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:59,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:51:59,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:51:59,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:51:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:59,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:59,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:59,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:51:59,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:59,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-29 07:51:59,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:59,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:59,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:59,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:59,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:51:59,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:00,224 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:52:00,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281739246] [2020-10-29 07:52:00,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:52:00,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:52:00,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501358864] [2020-10-29 07:52:00,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:52:00,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:00,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:52:00,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:52:00,227 INFO L87 Difference]: Start difference. First operand 8620 states and 9999 transitions. Second operand 7 states. [2020-10-29 07:52:08,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:52:08,760 INFO L93 Difference]: Finished difference Result 19202 states and 22356 transitions. [2020-10-29 07:52:08,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:52:08,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 438 [2020-10-29 07:52:08,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:52:08,811 INFO L225 Difference]: With dead ends: 19202 [2020-10-29 07:52:08,812 INFO L226 Difference]: Without dead ends: 10895 [2020-10-29 07:52:08,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:52:08,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10895 states. [2020-10-29 07:52:09,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10895 to 10542. [2020-10-29 07:52:09,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10542 states. [2020-10-29 07:52:09,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10542 states to 10542 states and 12131 transitions. [2020-10-29 07:52:09,100 INFO L78 Accepts]: Start accepts. Automaton has 10542 states and 12131 transitions. Word has length 438 [2020-10-29 07:52:09,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:52:09,101 INFO L481 AbstractCegarLoop]: Abstraction has 10542 states and 12131 transitions. [2020-10-29 07:52:09,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:52:09,101 INFO L276 IsEmpty]: Start isEmpty. Operand 10542 states and 12131 transitions. [2020-10-29 07:52:09,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2020-10-29 07:52:09,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:09,113 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:52:09,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:52:09,114 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:09,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:09,114 INFO L82 PathProgramCache]: Analyzing trace with hash -822141402, now seen corresponding path program 1 times [2020-10-29 07:52:09,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:09,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536811586] [2020-10-29 07:52:09,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:09,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:10,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:10,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 464 [2020-10-29 07:52:10,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:10,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 863 [2020-10-29 07:52:10,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:10,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:10,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:10,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:52:10,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 07:52:10,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:10,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:52:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:10,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:10,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:10,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:52:10,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:10,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:52:10,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:10,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:10,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:52:10,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:10,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:52:10,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:10,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:52:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:10,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:10,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:10,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:52:10,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:10,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 07:52:10,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:10,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:10,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:52:10,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:10,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:52:10,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:10,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:52:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:10,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:10,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:10,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:52:10,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:10,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 07:52:10,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:10,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:10,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:10,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:10,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:52:10,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-29 07:52:11,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536811586] [2020-10-29 07:52:11,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:52:11,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:52:11,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823327185] [2020-10-29 07:52:11,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:52:11,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:11,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:52:11,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:52:11,148 INFO L87 Difference]: Start difference. First operand 10542 states and 12131 transitions. Second operand 5 states. [2020-10-29 07:52:19,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:52:19,277 INFO L93 Difference]: Finished difference Result 24329 states and 28623 transitions. [2020-10-29 07:52:19,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:52:19,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 450 [2020-10-29 07:52:19,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:52:19,338 INFO L225 Difference]: With dead ends: 24329 [2020-10-29 07:52:19,339 INFO L226 Difference]: Without dead ends: 14100 [2020-10-29 07:52:19,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:52:19,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14100 states. [2020-10-29 07:52:19,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14100 to 14064. [2020-10-29 07:52:19,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14064 states. [2020-10-29 07:52:19,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14064 states to 14064 states and 16487 transitions. [2020-10-29 07:52:19,697 INFO L78 Accepts]: Start accepts. Automaton has 14064 states and 16487 transitions. Word has length 450 [2020-10-29 07:52:19,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:52:19,698 INFO L481 AbstractCegarLoop]: Abstraction has 14064 states and 16487 transitions. [2020-10-29 07:52:19,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:52:19,698 INFO L276 IsEmpty]: Start isEmpty. Operand 14064 states and 16487 transitions. [2020-10-29 07:52:19,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2020-10-29 07:52:19,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:19,705 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:52:19,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:52:19,705 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:19,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:19,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1256568099, now seen corresponding path program 1 times [2020-10-29 07:52:19,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:19,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143466498] [2020-10-29 07:52:19,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:19,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:20,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:20,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:20,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:23,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:24,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:24,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 504 [2020-10-29 07:52:24,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:52:24,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 07:52:24,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:24,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:24,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:52:24,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:52:24,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 495 [2020-10-29 07:52:24,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:25,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:52:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:25,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:25,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:25,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:52:25,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:25,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:52:25,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:25,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:25,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:25,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:25,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:52:25,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:25,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:52:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:25,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:25,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:25,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:25,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:52:25,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:52:25,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-29 07:52:25,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:25,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:25,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:25,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:25,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-29 07:52:25,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:25,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-29 07:52:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:25,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:25,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:26,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:26,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:52:26,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:52:26,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 523 [2020-10-29 07:52:26,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:26,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:26,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:26,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:26,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-29 07:52:26,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:26,636 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 82 proven. 11 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2020-10-29 07:52:26,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143466498] [2020-10-29 07:52:26,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:52:26,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:52:26,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040218423] [2020-10-29 07:52:26,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:52:26,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:26,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:52:26,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:52:26,639 INFO L87 Difference]: Start difference. First operand 14064 states and 16487 transitions. Second operand 7 states. [2020-10-29 07:52:45,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:52:45,009 INFO L93 Difference]: Finished difference Result 35261 states and 42643 transitions. [2020-10-29 07:52:45,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:52:45,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 490 [2020-10-29 07:52:45,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:52:45,078 INFO L225 Difference]: With dead ends: 35261 [2020-10-29 07:52:45,078 INFO L226 Difference]: Without dead ends: 21510 [2020-10-29 07:52:45,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:52:45,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21510 states. [2020-10-29 07:52:45,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21510 to 16866. [2020-10-29 07:52:45,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16866 states. [2020-10-29 07:52:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16866 states to 16866 states and 20155 transitions. [2020-10-29 07:52:45,541 INFO L78 Accepts]: Start accepts. Automaton has 16866 states and 20155 transitions. Word has length 490 [2020-10-29 07:52:45,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:52:45,542 INFO L481 AbstractCegarLoop]: Abstraction has 16866 states and 20155 transitions. [2020-10-29 07:52:45,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:52:45,542 INFO L276 IsEmpty]: Start isEmpty. Operand 16866 states and 20155 transitions. [2020-10-29 07:52:45,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2020-10-29 07:52:45,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:45,552 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, 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, 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] [2020-10-29 07:52:45,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:52:45,552 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:45,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:45,553 INFO L82 PathProgramCache]: Analyzing trace with hash -2023809888, now seen corresponding path program 1 times [2020-10-29 07:52:45,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:45,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62769622] [2020-10-29 07:52:45,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:45,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:46,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:47,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:47,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:47,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 559 [2020-10-29 07:52:47,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:52:47,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2105 [2020-10-29 07:52:47,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:47,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:47,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:52:47,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:52:47,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-29 07:52:47,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:48,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:52:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:48,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:48,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:48,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:52:48,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:48,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:52:48,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:48,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:48,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:52:48,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:48,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:52:48,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:48,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:52:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:48,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:48,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:48,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:52:48,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:48,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 07:52:48,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:48,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:48,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:52:48,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:48,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:52:48,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:48,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:52:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:48,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:48,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:48,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:52:48,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:48,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-29 07:52:48,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:48,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:52:48,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:48,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:52:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:48,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:48,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:48,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:48,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:52:48,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:52:48,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-29 07:52:48,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:48,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:48,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:48,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:52:48,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 07:52:48,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:49,009 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 272 proven. 46 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-29 07:52:49,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62769622] [2020-10-29 07:52:49,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:52:49,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:52:49,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566257378] [2020-10-29 07:52:49,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:52:49,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:49,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:52:49,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:52:49,012 INFO L87 Difference]: Start difference. First operand 16866 states and 20155 transitions. Second operand 6 states. [2020-10-29 07:52:56,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:52:56,006 INFO L93 Difference]: Finished difference Result 38167 states and 46789 transitions. [2020-10-29 07:52:56,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:52:56,008 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 543 [2020-10-29 07:52:56,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:52:56,062 INFO L225 Difference]: With dead ends: 38167 [2020-10-29 07:52:56,062 INFO L226 Difference]: Without dead ends: 20659 [2020-10-29 07:52:56,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:52:56,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20659 states. [2020-10-29 07:52:56,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20659 to 19964. [2020-10-29 07:52:56,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19964 states. [2020-10-29 07:52:56,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19964 states to 19964 states and 23395 transitions. [2020-10-29 07:52:56,495 INFO L78 Accepts]: Start accepts. Automaton has 19964 states and 23395 transitions. Word has length 543 [2020-10-29 07:52:56,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:52:56,496 INFO L481 AbstractCegarLoop]: Abstraction has 19964 states and 23395 transitions. [2020-10-29 07:52:56,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:52:56,496 INFO L276 IsEmpty]: Start isEmpty. Operand 19964 states and 23395 transitions. [2020-10-29 07:52:56,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2020-10-29 07:52:56,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:56,510 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:52:56,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:52:56,511 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:56,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:56,512 INFO L82 PathProgramCache]: Analyzing trace with hash -125774939, now seen corresponding path program 1 times [2020-10-29 07:52:56,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:56,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602939201] [2020-10-29 07:52:56,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:56,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:56,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:00,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:01,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:01,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 615 [2020-10-29 07:53:01,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:53:01,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 07:53:01,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:01,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:01,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:53:01,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:53:01,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-29 07:53:01,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:01,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:01,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:01,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:01,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:01,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:01,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:53:01,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:01,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:01,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:01,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:01,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:53:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:01,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:02,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:02,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:53:02,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:02,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-29 07:53:02,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:02,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:02,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:02,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:02,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:53:02,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:02,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:53:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:02,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:02,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:02,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:53:02,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:02,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-29 07:53:02,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:02,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:02,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:53:02,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:02,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:53:02,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:02,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:53:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:02,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:02,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:02,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:53:02,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:02,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 07:53:02,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:02,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-29 07:53:02,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:03,261 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 393 proven. 110 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:53:03,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602939201] [2020-10-29 07:53:03,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:53:03,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:53:03,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322300174] [2020-10-29 07:53:03,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:53:03,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:03,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:53:03,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:53:03,264 INFO L87 Difference]: Start difference. First operand 19964 states and 23395 transitions. Second operand 10 states. [2020-10-29 07:53:09,242 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-29 07:53:21,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:53:21,578 INFO L93 Difference]: Finished difference Result 49407 states and 59259 transitions. [2020-10-29 07:53:21,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 07:53:21,581 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 599 [2020-10-29 07:53:21,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:53:21,661 INFO L225 Difference]: With dead ends: 49407 [2020-10-29 07:53:21,662 INFO L226 Difference]: Without dead ends: 29756 [2020-10-29 07:53:21,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2020-10-29 07:53:21,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29756 states. [2020-10-29 07:53:22,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29756 to 28450. [2020-10-29 07:53:22,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28450 states. [2020-10-29 07:53:22,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28450 states to 28450 states and 33426 transitions. [2020-10-29 07:53:22,360 INFO L78 Accepts]: Start accepts. Automaton has 28450 states and 33426 transitions. Word has length 599 [2020-10-29 07:53:22,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:53:22,362 INFO L481 AbstractCegarLoop]: Abstraction has 28450 states and 33426 transitions. [2020-10-29 07:53:22,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 07:53:22,362 INFO L276 IsEmpty]: Start isEmpty. Operand 28450 states and 33426 transitions. [2020-10-29 07:53:22,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2020-10-29 07:53:22,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:22,378 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, 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, 2, 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] [2020-10-29 07:53:22,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:53:22,379 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:22,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:22,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1828450131, now seen corresponding path program 1 times [2020-10-29 07:53:22,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:22,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619736032] [2020-10-29 07:53:22,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:22,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:22,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:23,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:23,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:24,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:24,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:27,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:27,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 630 [2020-10-29 07:53:27,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:53:27,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 07:53:27,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:27,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:27,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:27,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:53:27,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 07:53:27,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:27,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:27,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:27,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:27,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:27,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:27,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:53:27,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:27,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:27,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:27,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:27,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:27,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:27,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:53:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:27,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:27,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:27,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:53:27,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:27,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-29 07:53:27,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:27,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:27,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:27,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:27,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:53:27,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:28,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:53:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:28,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:28,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:28,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:28,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:28,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 07:53:28,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:53:28,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-29 07:53:28,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:28,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:28,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:28,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:28,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 07:53:28,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:28,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2020-10-29 07:53:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:28,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:28,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:28,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:53:28,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:28,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 07:53:28,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:28,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-29 07:53:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:28,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:28,672 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 260 proven. 123 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-10-29 07:53:28,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619736032] [2020-10-29 07:53:28,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:53:28,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:53:28,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225312810] [2020-10-29 07:53:28,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:53:28,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:28,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:53:28,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:53:28,674 INFO L87 Difference]: Start difference. First operand 28450 states and 33426 transitions. Second operand 7 states. [2020-10-29 07:53:41,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:53:41,098 INFO L93 Difference]: Finished difference Result 65060 states and 76663 transitions. [2020-10-29 07:53:41,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:53:41,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 614 [2020-10-29 07:53:41,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:53:41,200 INFO L225 Difference]: With dead ends: 65060 [2020-10-29 07:53:41,200 INFO L226 Difference]: Without dead ends: 36923 [2020-10-29 07:53:41,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:53:41,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36923 states. [2020-10-29 07:53:41,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36923 to 35026. [2020-10-29 07:53:41,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35026 states. [2020-10-29 07:53:41,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35026 states to 35026 states and 40642 transitions. [2020-10-29 07:53:41,963 INFO L78 Accepts]: Start accepts. Automaton has 35026 states and 40642 transitions. Word has length 614 [2020-10-29 07:53:41,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:53:41,964 INFO L481 AbstractCegarLoop]: Abstraction has 35026 states and 40642 transitions. [2020-10-29 07:53:41,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:53:41,964 INFO L276 IsEmpty]: Start isEmpty. Operand 35026 states and 40642 transitions. [2020-10-29 07:53:41,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2020-10-29 07:53:41,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:41,977 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:53:41,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:53:41,977 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:41,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:41,978 INFO L82 PathProgramCache]: Analyzing trace with hash -384722615, now seen corresponding path program 1 times [2020-10-29 07:53:41,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:41,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860975860] [2020-10-29 07:53:41,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:42,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:43,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:43,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:44,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:44,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 644 [2020-10-29 07:53:44,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:53:44,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2617 [2020-10-29 07:53:44,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:44,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:44,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:44,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-29 07:53:44,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 07:53:44,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:44,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:44,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:44,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:44,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:44,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:44,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:53:44,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:44,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:44,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:44,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:44,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:44,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:44,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:53:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:44,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:45,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:45,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:53:45,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:45,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 07:53:45,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:45,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:45,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:45,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:45,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:45,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:45,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:53:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:45,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:45,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:45,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 07:53:45,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:45,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 07:53:45,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:45,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:45,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:45,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:45,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-29 07:53:45,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:45,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-29 07:53:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:45,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:45,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:45,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 07:53:45,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:45,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 07:53:45,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:45,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:45,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:45,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:45,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 07:53:45,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-29 07:53:45,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860975860] [2020-10-29 07:53:45,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:53:45,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:53:45,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614338433] [2020-10-29 07:53:45,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:53:45,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:45,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:53:45,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:53:45,675 INFO L87 Difference]: Start difference. First operand 35026 states and 40642 transitions. Second operand 7 states. [2020-10-29 07:53:53,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:53:53,269 INFO L93 Difference]: Finished difference Result 76584 states and 90477 transitions. [2020-10-29 07:53:53,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:53:53,271 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 628 [2020-10-29 07:53:53,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:53:53,396 INFO L225 Difference]: With dead ends: 76584 [2020-10-29 07:53:53,396 INFO L226 Difference]: Without dead ends: 41871 [2020-10-29 07:53:53,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:53:53,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41871 states. [2020-10-29 07:53:54,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41871 to 41213. [2020-10-29 07:53:54,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41213 states. [2020-10-29 07:53:54,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41213 states to 41213 states and 48723 transitions. [2020-10-29 07:53:54,402 INFO L78 Accepts]: Start accepts. Automaton has 41213 states and 48723 transitions. Word has length 628 [2020-10-29 07:53:54,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:53:54,404 INFO L481 AbstractCegarLoop]: Abstraction has 41213 states and 48723 transitions. [2020-10-29 07:53:54,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:53:54,404 INFO L276 IsEmpty]: Start isEmpty. Operand 41213 states and 48723 transitions. [2020-10-29 07:53:54,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2020-10-29 07:53:54,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:54,425 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:53:54,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:53:54,425 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:54,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:54,426 INFO L82 PathProgramCache]: Analyzing trace with hash -360961094, now seen corresponding path program 1 times [2020-10-29 07:53:54,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:54,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661771919] [2020-10-29 07:53:54,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:54,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:54,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:57,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:58,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:58,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 708 [2020-10-29 07:53:58,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:53:58,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4182 [2020-10-29 07:53:58,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:58,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:58,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:58,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-29 07:53:58,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:53:58,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:59,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:59,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:59,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:59,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:59,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:59,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:53:59,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:59,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:59,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:59,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:59,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:59,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:59,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:53:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:59,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:59,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:59,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:53:59,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:59,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 07:53:59,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:59,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:59,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:59,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:59,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:59,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:59,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:53:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:59,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:59,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:59,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 07:53:59,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:59,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 07:53:59,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:59,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:59,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:59,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:59,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-29 07:53:59,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:59,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-29 07:53:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:59,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:59,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:59,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:53:59,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:59,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 07:53:59,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:59,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:59,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:59,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:53:59,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:59,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-29 07:53:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:59,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:59,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:59,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 07:53:59,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:59,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:53:59,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:59,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:59,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:59,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-29 07:53:59,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:59,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:59,947 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 347 proven. 77 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2020-10-29 07:53:59,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661771919] [2020-10-29 07:53:59,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:53:59,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:53:59,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623868701] [2020-10-29 07:53:59,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:53:59,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:59,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:53:59,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:53:59,949 INFO L87 Difference]: Start difference. First operand 41213 states and 48723 transitions. Second operand 7 states. [2020-10-29 07:54:13,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:54:13,305 INFO L93 Difference]: Finished difference Result 92984 states and 110576 transitions. [2020-10-29 07:54:13,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:54:13,307 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 690 [2020-10-29 07:54:13,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:54:13,588 INFO L225 Difference]: With dead ends: 92984 [2020-10-29 07:54:13,588 INFO L226 Difference]: Without dead ends: 52084 [2020-10-29 07:54:13,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:54:13,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52084 states. [2020-10-29 07:54:14,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52084 to 51413. [2020-10-29 07:54:14,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51413 states.