/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/array-industry-pattern/array_assert_loop_dep.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:58:53,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:58:53,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:58:53,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:58:53,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:58:53,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:58:53,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:58:53,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:58:53,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:58:53,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:58:53,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:58:53,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:58:53,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:58:53,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:58:53,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:58:53,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:58:53,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:58:53,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:58:53,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:58:53,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:58:53,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:58:53,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:58:53,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:58:53,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:58:53,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:58:53,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:58:53,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:58:53,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:58:53,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:58:53,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:58:53,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:58:53,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:58:53,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:58:53,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:58:53,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:58:53,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:58:53,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:58:53,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:58:53,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:58:53,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:58:53,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:58:53,822 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 03:58:53,875 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:58:53,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:58:53,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:58:53,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:58:53,880 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:58:53,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:58:53,880 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:58:53,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:58:53,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:58:53,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:58:53,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:58:53,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:58:53,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:58:53,883 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:58:53,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:58:53,883 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:58:53,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:58:53,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:58:53,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:58:53,884 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:58:53,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:58:53,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:58:53,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:58:53,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:58:53,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:58:53,885 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:58:53,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:58:53,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:58:53,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:58:53,886 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:58:54,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:58:54,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:58:54,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:58:54,308 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:58:54,308 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:58:54,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_assert_loop_dep.i [2020-10-29 03:58:54,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bab6179e/eb2eaa57fadf47fab824754b94c42d82/FLAGb61da62f1 [2020-10-29 03:58:55,070 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:58:55,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_assert_loop_dep.i [2020-10-29 03:58:55,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bab6179e/eb2eaa57fadf47fab824754b94c42d82/FLAGb61da62f1 [2020-10-29 03:58:55,436 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bab6179e/eb2eaa57fadf47fab824754b94c42d82 [2020-10-29 03:58:55,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:58:55,445 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:58:55,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:58:55,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:58:55,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:58:55,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:58:55" (1/1) ... [2020-10-29 03:58:55,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d0f3df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:58:55, skipping insertion in model container [2020-10-29 03:58:55,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:58:55" (1/1) ... [2020-10-29 03:58:55,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:58:55,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:58:55,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:58:55,686 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:58:55,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:58:55,724 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:58:55,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:58:55 WrapperNode [2020-10-29 03:58:55,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:58:55,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:58:55,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:58:55,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:58:55,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:58:55" (1/1) ... [2020-10-29 03:58:55,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:58:55" (1/1) ... [2020-10-29 03:58:55,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:58:55" (1/1) ... [2020-10-29 03:58:55,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:58:55" (1/1) ... [2020-10-29 03:58:55,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:58:55" (1/1) ... [2020-10-29 03:58:55,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:58:55" (1/1) ... [2020-10-29 03:58:55,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:58:55" (1/1) ... [2020-10-29 03:58:55,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:58:55,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:58:55,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:58:55,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:58:55,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:58:55" (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 03:58:55,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:58:55,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:58:55,851 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:58:55,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:58:55,851 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:58:55,851 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:58:55,851 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:58:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:58:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:58:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:58:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:58:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:58:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:58:55,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:58:55,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:58:55,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:58:55,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:58:55,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:58:55,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:58:56,194 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:58:56,194 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 03:58:56,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:58:56 BoogieIcfgContainer [2020-10-29 03:58:56,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:58:56,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:58:56,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:58:56,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:58:56,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:58:55" (1/3) ... [2020-10-29 03:58:56,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c59dafb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:58:56, skipping insertion in model container [2020-10-29 03:58:56,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:58:55" (2/3) ... [2020-10-29 03:58:56,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c59dafb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:58:56, skipping insertion in model container [2020-10-29 03:58:56,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:58:56" (3/3) ... [2020-10-29 03:58:56,206 INFO L111 eAbstractionObserver]: Analyzing ICFG array_assert_loop_dep.i [2020-10-29 03:58:56,218 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:58:56,223 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:58:56,237 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:58:56,276 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:58:56,276 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:58:56,277 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:58:56,277 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:58:56,277 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:58:56,277 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:58:56,278 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:58:56,278 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:58:56,302 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-29 03:58:56,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 03:58:56,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:58:56,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:58:56,315 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:58:56,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:58:56,329 INFO L82 PathProgramCache]: Analyzing trace with hash -110565287, now seen corresponding path program 1 times [2020-10-29 03:58:56,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:58:56,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115887812] [2020-10-29 03:58:56,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:58:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:56,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:56,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:56,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 03:58:56,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:56,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 03:58:56,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:56,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:58:56,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:56,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 03:58:56,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:58:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:56,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:56,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:56,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:58:56,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:56,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 03:58:56,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:56,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:56,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:56,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:56,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:56,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:58:56,822 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 03:58:56,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115887812] [2020-10-29 03:58:56,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:58:56,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 03:58:56,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113478547] [2020-10-29 03:58:56,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 03:58:56,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:58:56,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 03:58:56,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 03:58:56,848 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2020-10-29 03:58:56,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:58:56,926 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2020-10-29 03:58:56,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 03:58:56,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-29 03:58:56,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:58:56,935 INFO L225 Difference]: With dead ends: 49 [2020-10-29 03:58:56,935 INFO L226 Difference]: Without dead ends: 22 [2020-10-29 03:58:56,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 03:58:56,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-29 03:58:56,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-29 03:58:56,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-29 03:58:56,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-10-29 03:58:56,979 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 15 [2020-10-29 03:58:56,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:58:56,980 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-10-29 03:58:56,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 03:58:56,980 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-10-29 03:58:56,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 03:58:56,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:58:56,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:58:56,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:58:56,982 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:58:56,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:58:56,983 INFO L82 PathProgramCache]: Analyzing trace with hash 2144226899, now seen corresponding path program 1 times [2020-10-29 03:58:56,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:58:56,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104325127] [2020-10-29 03:58:56,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:58:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:57,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:57,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:57,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 03:58:57,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:57,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-29 03:58:57,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:57,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:57,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:58:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:58:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:58:57,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:58:57,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:58:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:57,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:57,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:57,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:58:57,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:57,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:58:57,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:57,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:57,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:57,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:57,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:57,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:58:57,250 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 03:58:57,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104325127] [2020-10-29 03:58:57,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:58:57,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:58:57,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313942696] [2020-10-29 03:58:57,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:58:57,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:58:57,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:58:57,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:58:57,254 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 4 states. [2020-10-29 03:58:57,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:58:57,334 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-10-29 03:58:57,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:58:57,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-29 03:58:57,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:58:57,337 INFO L225 Difference]: With dead ends: 43 [2020-10-29 03:58:57,338 INFO L226 Difference]: Without dead ends: 29 [2020-10-29 03:58:57,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:58:57,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-29 03:58:57,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-10-29 03:58:57,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-29 03:58:57,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-29 03:58:57,351 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 15 [2020-10-29 03:58:57,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:58:57,351 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-29 03:58:57,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:58:57,351 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-29 03:58:57,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 03:58:57,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:58:57,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:58:57,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:58:57,354 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:58:57,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:58:57,354 INFO L82 PathProgramCache]: Analyzing trace with hash -246080399, now seen corresponding path program 1 times [2020-10-29 03:58:57,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:58:57,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491159527] [2020-10-29 03:58:57,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:58:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:57,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:57,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:57,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:57,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 03:58:57,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:58:57,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-10-29 03:58:57,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:57,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:57,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:58:57,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:58:57,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 03:58:57,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:58:58,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:58:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:58,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:58,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:58,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:58:58,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:58,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:58:58,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:58,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:58,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:58,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:58,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:58,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:58:58,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491159527] [2020-10-29 03:58:58,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:58:58,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:58:58,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058729215] [2020-10-29 03:58:58,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:58:58,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:58:58,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:58:58,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:58:58,022 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 9 states. [2020-10-29 03:58:58,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:58:58,302 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2020-10-29 03:58:58,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:58:58,303 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-10-29 03:58:58,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:58:58,304 INFO L225 Difference]: With dead ends: 42 [2020-10-29 03:58:58,304 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 03:58:58,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:58:58,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 03:58:58,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2020-10-29 03:58:58,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 03:58:58,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-10-29 03:58:58,316 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 17 [2020-10-29 03:58:58,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:58:58,316 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-10-29 03:58:58,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:58:58,316 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-10-29 03:58:58,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 03:58:58,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:58:58,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:58:58,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:58:58,318 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:58:58,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:58:58,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1377191, now seen corresponding path program 1 times [2020-10-29 03:58:58,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:58:58,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107347655] [2020-10-29 03:58:58,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:58:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:58,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:58,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:58,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:58:58,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:58,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 03:58:58,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:58,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:58,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:58:58,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:58:58,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:58:58,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:58,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:58:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:58,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:58,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:58,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:58:58,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:58,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 03:58:58,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:58,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:58,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:58,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:58,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:58:58,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 03:58:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:58,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:58,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:58,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:58:58,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:58,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:58:58,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:58,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:58:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:58,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:58,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:58:58,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107347655] [2020-10-29 03:58:58,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:58:58,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:58:58,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020490964] [2020-10-29 03:58:58,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:58:58,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:58:58,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:58:58,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:58:58,544 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 5 states. [2020-10-29 03:58:58,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:58:58,641 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-10-29 03:58:58,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:58:58,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-29 03:58:58,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:58:58,643 INFO L225 Difference]: With dead ends: 62 [2020-10-29 03:58:58,643 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 03:58:58,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:58:58,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 03:58:58,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-10-29 03:58:58,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 03:58:58,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-10-29 03:58:58,653 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 26 [2020-10-29 03:58:58,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:58:58,654 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-10-29 03:58:58,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:58:58,654 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-10-29 03:58:58,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:58:58,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:58:58,655 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:58:58,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:58:58,656 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:58:58,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:58:58,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1485361019, now seen corresponding path program 2 times [2020-10-29 03:58:58,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:58:58,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235897463] [2020-10-29 03:58:58,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:58:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:58,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:58,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:58,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:58:58,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:58,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 03:58:58,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:58,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:58,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:58:58,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:58:58,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:58:58,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:58:58,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:58:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:58,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:58,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:58,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:58:58,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:58,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:58:58,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:58,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:58,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:58,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:58,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:58,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:58:58,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 03:58:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:58,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:58,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:58,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:58:58,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:58,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:58:58,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:58,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:58,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:58,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:58:58,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:58,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:58,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:58:58,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235897463] [2020-10-29 03:58:58,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:58:58,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:58:58,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805420804] [2020-10-29 03:58:58,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:58:58,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:58:58,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:58:58,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:58:58,827 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 6 states. [2020-10-29 03:58:58,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:58:58,933 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2020-10-29 03:58:58,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:58:58,933 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-29 03:58:58,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:58:58,934 INFO L225 Difference]: With dead ends: 74 [2020-10-29 03:58:58,935 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 03:58:58,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:58:58,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 03:58:58,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-10-29 03:58:58,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 03:58:58,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-29 03:58:58,944 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 28 [2020-10-29 03:58:58,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:58:58,945 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-29 03:58:58,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:58:58,945 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-29 03:58:58,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 03:58:58,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:58:58,946 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:58:58,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:58:58,947 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:58:58,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:58:58,947 INFO L82 PathProgramCache]: Analyzing trace with hash 16671261, now seen corresponding path program 3 times [2020-10-29 03:58:58,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:58:58,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944586104] [2020-10-29 03:58:58,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:58:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:58,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:59,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:59,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:58:59,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:59,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 03:58:59,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:59,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:59,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:58:59,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:58:59,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:58:59,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:59,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:58:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:59,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:59,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:59,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:58:59,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:59,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:58:59,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:59,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:59,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:59,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:59,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:59,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:59,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 03:58:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:59,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:59,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:59,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:58:59,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:59,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:58:59,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:59,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:59,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:59,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:58:59,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:59,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:58:59,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944586104] [2020-10-29 03:58:59,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:58:59,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:58:59,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124777434] [2020-10-29 03:58:59,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:58:59,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:58:59,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:58:59,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:58:59,122 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-10-29 03:58:59,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:58:59,247 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2020-10-29 03:58:59,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:58:59,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-10-29 03:58:59,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:58:59,249 INFO L225 Difference]: With dead ends: 86 [2020-10-29 03:58:59,249 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 03:58:59,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:58:59,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 03:58:59,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-29 03:58:59,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 03:58:59,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-10-29 03:58:59,259 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2020-10-29 03:58:59,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:58:59,259 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-10-29 03:58:59,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:58:59,259 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-10-29 03:58:59,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 03:58:59,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:58:59,260 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:58:59,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:58:59,261 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:58:59,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:58:59,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1650054207, now seen corresponding path program 4 times [2020-10-29 03:58:59,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:58:59,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199521600] [2020-10-29 03:58:59,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:58:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:59,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:59,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:59,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:58:59,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:59,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-29 03:58:59,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:59,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:59,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:58:59,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:58:59,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:58:59,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:59,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:58:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:59,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:59,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:59,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:58:59,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:59,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:58:59,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:59,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:59,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:59,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:59,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:59,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:59,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 03:58:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:59,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:59,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:59,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:58:59,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:59,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:58:59,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:59,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:59,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:59,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:58:59,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:59,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:58:59,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199521600] [2020-10-29 03:58:59,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:58:59,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:58:59,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788587555] [2020-10-29 03:58:59,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:58:59,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:58:59,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:58:59,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:58:59,580 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 8 states. [2020-10-29 03:58:59,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:58:59,732 INFO L93 Difference]: Finished difference Result 98 states and 110 transitions. [2020-10-29 03:58:59,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:58:59,733 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-29 03:58:59,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:58:59,734 INFO L225 Difference]: With dead ends: 98 [2020-10-29 03:58:59,734 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 03:58:59,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:58:59,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 03:58:59,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-10-29 03:58:59,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 03:58:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2020-10-29 03:58:59,744 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 32 [2020-10-29 03:58:59,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:58:59,744 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2020-10-29 03:58:59,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:58:59,745 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2020-10-29 03:58:59,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 03:58:59,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:58:59,746 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:58:59,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:58:59,746 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:58:59,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:58:59,747 INFO L82 PathProgramCache]: Analyzing trace with hash -626965023, now seen corresponding path program 5 times [2020-10-29 03:58:59,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:58:59,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797694320] [2020-10-29 03:58:59,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:58:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:59,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:59,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:59,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:58:59,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:59,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 03:58:59,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:59,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:59,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:58:59,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:58:59,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:58:59,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:59,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:58:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:59,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:59,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:59,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:58:59,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:59,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:58:59,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:59,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:59,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:59,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:59,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:59,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:59,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 03:58:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:59,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:59,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:59,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:58:59,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:59,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:58:59,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:59,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:58:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:59,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:58:59,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797694320] [2020-10-29 03:58:59,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:58:59,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:58:59,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901558075] [2020-10-29 03:58:59,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:58:59,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:58:59,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:58:59,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:58:59,982 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 9 states. [2020-10-29 03:59:00,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:00,152 INFO L93 Difference]: Finished difference Result 110 states and 124 transitions. [2020-10-29 03:59:00,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:59:00,153 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-29 03:59:00,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:00,154 INFO L225 Difference]: With dead ends: 110 [2020-10-29 03:59:00,154 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 03:59:00,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:59:00,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 03:59:00,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-10-29 03:59:00,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 03:59:00,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-10-29 03:59:00,164 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 34 [2020-10-29 03:59:00,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:00,165 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-10-29 03:59:00,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:59:00,165 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-10-29 03:59:00,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 03:59:00,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:00,166 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:00,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:59:00,166 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:00,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:00,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1590875907, now seen corresponding path program 6 times [2020-10-29 03:59:00,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:00,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389649995] [2020-10-29 03:59:00,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:00,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:00,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:00,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:59:00,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:00,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 03:59:00,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:00,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:00,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:59:00,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:00,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:59:00,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:00,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:00,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:00,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:00,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:00,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:00,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:59:00,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:00,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:00,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:00,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:00,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:00,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:00,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 03:59:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:00,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:00,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:00,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:00,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:00,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:00,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:00,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:00,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:00,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:00,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:00,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:00,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389649995] [2020-10-29 03:59:00,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:00,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:59:00,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198671483] [2020-10-29 03:59:00,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:59:00,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:00,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:59:00,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:59:00,429 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 10 states. [2020-10-29 03:59:00,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:00,649 INFO L93 Difference]: Finished difference Result 122 states and 138 transitions. [2020-10-29 03:59:00,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:59:00,650 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-29 03:59:00,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:00,651 INFO L225 Difference]: With dead ends: 122 [2020-10-29 03:59:00,651 INFO L226 Difference]: Without dead ends: 75 [2020-10-29 03:59:00,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:59:00,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-29 03:59:00,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-10-29 03:59:00,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 03:59:00,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2020-10-29 03:59:00,661 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 36 [2020-10-29 03:59:00,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:00,661 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2020-10-29 03:59:00,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:59:00,662 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2020-10-29 03:59:00,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 03:59:00,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:00,663 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:00,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:59:00,663 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:00,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:00,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1662736475, now seen corresponding path program 7 times [2020-10-29 03:59:00,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:00,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995514790] [2020-10-29 03:59:00,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:00,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:00,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:00,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:59:00,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:00,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-29 03:59:00,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:00,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:00,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:59:00,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:00,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:59:00,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:01,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:01,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:01,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:01,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:01,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:01,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:59:01,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:01,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:01,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:01,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:59:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:01,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:01,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:01,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:01,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:01,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:59:01,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:01,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:01,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:01,023 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 2 proven. 49 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:01,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995514790] [2020-10-29 03:59:01,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:01,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:59:01,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216153987] [2020-10-29 03:59:01,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:59:01,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:01,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:59:01,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:59:01,025 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand 11 states. [2020-10-29 03:59:01,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:01,223 INFO L93 Difference]: Finished difference Result 134 states and 152 transitions. [2020-10-29 03:59:01,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:59:01,224 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-10-29 03:59:01,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:01,225 INFO L225 Difference]: With dead ends: 134 [2020-10-29 03:59:01,225 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 03:59:01,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:59:01,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 03:59:01,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-10-29 03:59:01,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-29 03:59:01,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-10-29 03:59:01,234 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 38 [2020-10-29 03:59:01,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:01,235 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-10-29 03:59:01,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:59:01,235 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-10-29 03:59:01,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 03:59:01,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:01,236 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:01,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:59:01,236 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:01,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:01,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1648044089, now seen corresponding path program 8 times [2020-10-29 03:59:01,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:01,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912870907] [2020-10-29 03:59:01,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:01,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:01,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:01,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:59:01,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:01,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-29 03:59:01,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:01,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:01,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:59:01,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:01,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:59:01,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:01,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:01,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:01,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:01,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:01,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:01,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:59:01,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:01,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:01,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:01,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:01,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:01,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:01,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:59:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:01,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:01,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:01,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:01,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:01,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:59:01,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:01,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:01,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:01,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:01,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:01,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 64 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:01,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912870907] [2020-10-29 03:59:01,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:01,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:59:01,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803553203] [2020-10-29 03:59:01,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:59:01,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:01,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:59:01,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:59:01,600 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 12 states. [2020-10-29 03:59:01,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:01,839 INFO L93 Difference]: Finished difference Result 146 states and 166 transitions. [2020-10-29 03:59:01,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:59:01,840 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-29 03:59:01,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:01,842 INFO L225 Difference]: With dead ends: 146 [2020-10-29 03:59:01,842 INFO L226 Difference]: Without dead ends: 89 [2020-10-29 03:59:01,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:59:01,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-29 03:59:01,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2020-10-29 03:59:01,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-29 03:59:01,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2020-10-29 03:59:01,852 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 40 [2020-10-29 03:59:01,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:01,853 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2020-10-29 03:59:01,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:59:01,853 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2020-10-29 03:59:01,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 03:59:01,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:01,854 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:01,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:59:01,854 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:01,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:01,855 INFO L82 PathProgramCache]: Analyzing trace with hash -413563031, now seen corresponding path program 9 times [2020-10-29 03:59:01,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:01,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908323047] [2020-10-29 03:59:01,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:01,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:02,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:02,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:59:02,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:02,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-29 03:59:02,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:02,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:02,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:59:02,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:02,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:59:02,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:02,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:02,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:02,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:02,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:02,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:02,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:59:02,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:02,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:02,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:02,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:02,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:59:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:02,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:02,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:02,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:02,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:02,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:02,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:02,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:02,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:02,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:02,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:02,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:02,278 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 2 proven. 81 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:02,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908323047] [2020-10-29 03:59:02,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:02,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:59:02,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712370742] [2020-10-29 03:59:02,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:59:02,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:02,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:59:02,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:59:02,281 INFO L87 Difference]: Start difference. First operand 87 states and 97 transitions. Second operand 13 states. [2020-10-29 03:59:02,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:02,576 INFO L93 Difference]: Finished difference Result 158 states and 180 transitions. [2020-10-29 03:59:02,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:59:02,576 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-10-29 03:59:02,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:02,577 INFO L225 Difference]: With dead ends: 158 [2020-10-29 03:59:02,578 INFO L226 Difference]: Without dead ends: 96 [2020-10-29 03:59:02,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:59:02,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-29 03:59:02,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-10-29 03:59:02,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-29 03:59:02,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2020-10-29 03:59:02,594 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 42 [2020-10-29 03:59:02,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:02,594 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2020-10-29 03:59:02,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:59:02,595 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2020-10-29 03:59:02,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 03:59:02,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:02,599 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:02,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:59:02,599 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:02,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:02,600 INFO L82 PathProgramCache]: Analyzing trace with hash 511760011, now seen corresponding path program 10 times [2020-10-29 03:59:02,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:02,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570283754] [2020-10-29 03:59:02,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:02,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:02,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:02,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:59:02,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:02,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-29 03:59:02,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:02,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:59:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:02,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:59:02,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:03,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:03,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:03,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:03,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:03,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:03,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:59:03,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:03,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:03,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:03,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:03,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:03,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 03:59:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:03,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:03,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:03,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:03,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:03,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:03,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:03,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:03,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:03,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:03,024 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:03,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570283754] [2020-10-29 03:59:03,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:03,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:59:03,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047797097] [2020-10-29 03:59:03,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:59:03,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:03,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:59:03,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:59:03,029 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand 14 states. [2020-10-29 03:59:03,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:03,370 INFO L93 Difference]: Finished difference Result 170 states and 194 transitions. [2020-10-29 03:59:03,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:59:03,370 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-10-29 03:59:03,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:03,372 INFO L225 Difference]: With dead ends: 170 [2020-10-29 03:59:03,372 INFO L226 Difference]: Without dead ends: 103 [2020-10-29 03:59:03,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:59:03,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-29 03:59:03,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2020-10-29 03:59:03,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-29 03:59:03,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2020-10-29 03:59:03,387 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 44 [2020-10-29 03:59:03,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:03,387 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2020-10-29 03:59:03,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:59:03,388 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2020-10-29 03:59:03,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 03:59:03,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:03,391 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:03,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:59:03,392 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:03,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:03,392 INFO L82 PathProgramCache]: Analyzing trace with hash 688973101, now seen corresponding path program 11 times [2020-10-29 03:59:03,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:03,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228547612] [2020-10-29 03:59:03,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:03,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:03,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:03,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:59:03,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:03,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-29 03:59:03,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:03,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:03,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:59:03,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:03,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:59:03,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:03,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:03,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:03,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:03,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:03,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:03,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:59:03,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:03,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:03,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:03,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:03,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:03,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:03,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:59:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:03,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:03,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:03,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:03,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:03,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:03,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:03,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:03,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:03,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:03,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:03,953 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 121 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:03,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228547612] [2020-10-29 03:59:03,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:03,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:59:03,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524406574] [2020-10-29 03:59:03,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:59:03,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:03,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:59:03,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:59:03,961 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 15 states. [2020-10-29 03:59:04,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:04,341 INFO L93 Difference]: Finished difference Result 182 states and 208 transitions. [2020-10-29 03:59:04,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:59:04,341 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2020-10-29 03:59:04,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:04,343 INFO L225 Difference]: With dead ends: 182 [2020-10-29 03:59:04,343 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 03:59:04,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:59:04,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 03:59:04,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2020-10-29 03:59:04,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-29 03:59:04,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 121 transitions. [2020-10-29 03:59:04,353 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 121 transitions. Word has length 46 [2020-10-29 03:59:04,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:04,354 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 121 transitions. [2020-10-29 03:59:04,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:59:04,354 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 121 transitions. [2020-10-29 03:59:04,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 03:59:04,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:04,358 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:04,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:59:04,359 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:04,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:04,359 INFO L82 PathProgramCache]: Analyzing trace with hash -807939249, now seen corresponding path program 12 times [2020-10-29 03:59:04,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:04,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155556809] [2020-10-29 03:59:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:04,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:04,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:04,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:59:04,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:04,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-29 03:59:04,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:04,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:59:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:59:04,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:04,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:04,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:04,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:04,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:04,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:04,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:59:04,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:04,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:04,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:04,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:04,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:04,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:04,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:59:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:04,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:04,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:04,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:04,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:04,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:04,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:04,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:04,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:04,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:04,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:04,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:04,935 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 144 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:04,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155556809] [2020-10-29 03:59:04,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:04,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:59:04,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471300434] [2020-10-29 03:59:04,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:59:04,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:04,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:59:04,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:59:04,938 INFO L87 Difference]: Start difference. First operand 108 states and 121 transitions. Second operand 16 states. [2020-10-29 03:59:05,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:05,263 INFO L93 Difference]: Finished difference Result 194 states and 222 transitions. [2020-10-29 03:59:05,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:59:05,264 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-10-29 03:59:05,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:05,265 INFO L225 Difference]: With dead ends: 194 [2020-10-29 03:59:05,265 INFO L226 Difference]: Without dead ends: 117 [2020-10-29 03:59:05,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:59:05,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-29 03:59:05,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2020-10-29 03:59:05,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-29 03:59:05,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 129 transitions. [2020-10-29 03:59:05,274 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 129 transitions. Word has length 48 [2020-10-29 03:59:05,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:05,274 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 129 transitions. [2020-10-29 03:59:05,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:59:05,274 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 129 transitions. [2020-10-29 03:59:05,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 03:59:05,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:05,275 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:05,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:59:05,275 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:05,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:05,276 INFO L82 PathProgramCache]: Analyzing trace with hash -526663439, now seen corresponding path program 13 times [2020-10-29 03:59:05,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:05,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772319962] [2020-10-29 03:59:05,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:05,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:05,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:05,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:59:05,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:05,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-29 03:59:05,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:05,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:59:05,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:05,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:59:05,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:05,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:05,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:05,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:05,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:05,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:05,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:59:05,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:05,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:05,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:05,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:05,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:05,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:05,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:59:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:05,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:05,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:05,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:05,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:05,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:05,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:05,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:05,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:05,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:05,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:05,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:05,782 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 2 proven. 169 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:05,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772319962] [2020-10-29 03:59:05,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:05,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:59:05,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377690518] [2020-10-29 03:59:05,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:59:05,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:05,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:59:05,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:59:05,784 INFO L87 Difference]: Start difference. First operand 115 states and 129 transitions. Second operand 17 states. [2020-10-29 03:59:06,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:06,269 INFO L93 Difference]: Finished difference Result 206 states and 236 transitions. [2020-10-29 03:59:06,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:59:06,269 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 50 [2020-10-29 03:59:06,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:06,271 INFO L225 Difference]: With dead ends: 206 [2020-10-29 03:59:06,271 INFO L226 Difference]: Without dead ends: 124 [2020-10-29 03:59:06,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:59:06,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-29 03:59:06,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-10-29 03:59:06,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-29 03:59:06,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 137 transitions. [2020-10-29 03:59:06,280 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 137 transitions. Word has length 50 [2020-10-29 03:59:06,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:06,280 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 137 transitions. [2020-10-29 03:59:06,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:59:06,280 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 137 transitions. [2020-10-29 03:59:06,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:59:06,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:06,281 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:06,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:59:06,281 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:06,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:06,282 INFO L82 PathProgramCache]: Analyzing trace with hash -803549677, now seen corresponding path program 14 times [2020-10-29 03:59:06,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:06,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542761977] [2020-10-29 03:59:06,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:06,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:06,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:06,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:59:06,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:06,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-29 03:59:06,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:06,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:06,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:59:06,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:06,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:59:06,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:06,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:06,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:06,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:06,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:06,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:06,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:59:06,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:06,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:06,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:06,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:06,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:06,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:59:06,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 03:59:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:06,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:06,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:06,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:06,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:06,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:06,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:06,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:06,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:06,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:06,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:06,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:59:06,894 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 2 proven. 196 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:06,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542761977] [2020-10-29 03:59:06,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:06,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:59:06,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151786850] [2020-10-29 03:59:06,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:59:06,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:06,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:59:06,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:59:06,897 INFO L87 Difference]: Start difference. First operand 122 states and 137 transitions. Second operand 18 states. [2020-10-29 03:59:07,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:07,253 INFO L93 Difference]: Finished difference Result 218 states and 250 transitions. [2020-10-29 03:59:07,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:59:07,254 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 52 [2020-10-29 03:59:07,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:07,257 INFO L225 Difference]: With dead ends: 218 [2020-10-29 03:59:07,257 INFO L226 Difference]: Without dead ends: 131 [2020-10-29 03:59:07,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:59:07,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-29 03:59:07,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2020-10-29 03:59:07,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-29 03:59:07,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 145 transitions. [2020-10-29 03:59:07,272 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 145 transitions. Word has length 52 [2020-10-29 03:59:07,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:07,273 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 145 transitions. [2020-10-29 03:59:07,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:59:07,273 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 145 transitions. [2020-10-29 03:59:07,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 03:59:07,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:07,274 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:07,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:59:07,275 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:07,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:07,275 INFO L82 PathProgramCache]: Analyzing trace with hash -603252043, now seen corresponding path program 15 times [2020-10-29 03:59:07,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:07,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274004795] [2020-10-29 03:59:07,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:07,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:07,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:07,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:59:07,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:07,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-29 03:59:07,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:07,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:59:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:59:07,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:59:07,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:07,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:07,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:07,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:07,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:07,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:59:07,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:07,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:07,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:07,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:07,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:07,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:07,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:59:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:07,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:07,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:07,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:07,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:07,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:59:07,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:07,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:07,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:07,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:07,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:07,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:07,953 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 2 proven. 225 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:07,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274004795] [2020-10-29 03:59:07,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:07,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:59:07,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106795105] [2020-10-29 03:59:07,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:59:07,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:07,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:59:07,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:59:07,959 INFO L87 Difference]: Start difference. First operand 129 states and 145 transitions. Second operand 19 states. [2020-10-29 03:59:08,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:08,337 INFO L93 Difference]: Finished difference Result 230 states and 264 transitions. [2020-10-29 03:59:08,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:59:08,337 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 54 [2020-10-29 03:59:08,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:08,340 INFO L225 Difference]: With dead ends: 230 [2020-10-29 03:59:08,340 INFO L226 Difference]: Without dead ends: 138 [2020-10-29 03:59:08,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:59:08,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-29 03:59:08,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-10-29 03:59:08,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-29 03:59:08,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 153 transitions. [2020-10-29 03:59:08,349 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 153 transitions. Word has length 54 [2020-10-29 03:59:08,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:08,349 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 153 transitions. [2020-10-29 03:59:08,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:59:08,350 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 153 transitions. [2020-10-29 03:59:08,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 03:59:08,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:08,350 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:08,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:59:08,351 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:08,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:08,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1390754089, now seen corresponding path program 16 times [2020-10-29 03:59:08,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:08,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78631738] [2020-10-29 03:59:08,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:08,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:08,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:08,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:59:08,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:08,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-29 03:59:08,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:08,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:08,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:59:08,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:08,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:59:08,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:08,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:08,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:09,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:09,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:09,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:09,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:59:09,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:09,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:09,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:09,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:09,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:09,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:09,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:59:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:09,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:09,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:09,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:09,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:09,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:09,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:09,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:09,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:09,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:09,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:09,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 2 proven. 256 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:09,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78631738] [2020-10-29 03:59:09,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:09,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:59:09,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525796679] [2020-10-29 03:59:09,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:59:09,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:09,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:59:09,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:59:09,016 INFO L87 Difference]: Start difference. First operand 136 states and 153 transitions. Second operand 20 states. [2020-10-29 03:59:09,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:09,445 INFO L93 Difference]: Finished difference Result 242 states and 278 transitions. [2020-10-29 03:59:09,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:59:09,450 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 56 [2020-10-29 03:59:09,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:09,452 INFO L225 Difference]: With dead ends: 242 [2020-10-29 03:59:09,452 INFO L226 Difference]: Without dead ends: 145 [2020-10-29 03:59:09,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:59:09,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-29 03:59:09,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2020-10-29 03:59:09,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-29 03:59:09,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 161 transitions. [2020-10-29 03:59:09,467 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 161 transitions. Word has length 56 [2020-10-29 03:59:09,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:09,467 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 161 transitions. [2020-10-29 03:59:09,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:59:09,467 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 161 transitions. [2020-10-29 03:59:09,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 03:59:09,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:09,468 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:09,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:59:09,469 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:09,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:09,469 INFO L82 PathProgramCache]: Analyzing trace with hash 2028991097, now seen corresponding path program 17 times [2020-10-29 03:59:09,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:09,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853770747] [2020-10-29 03:59:09,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:09,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:10,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:10,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:59:10,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:10,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-29 03:59:10,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:10,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:59:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:59:10,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:10,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:10,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:10,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:10,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:10,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:10,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:59:10,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:10,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:10,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:10,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:10,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:10,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:10,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:59:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:10,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:10,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:10,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:10,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:10,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:10,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:10,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:10,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:10,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:10,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:10,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:10,426 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 2 proven. 289 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:10,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853770747] [2020-10-29 03:59:10,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:10,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:59:10,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891693457] [2020-10-29 03:59:10,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:59:10,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:10,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:59:10,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:59:10,428 INFO L87 Difference]: Start difference. First operand 143 states and 161 transitions. Second operand 21 states. [2020-10-29 03:59:10,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:10,856 INFO L93 Difference]: Finished difference Result 254 states and 292 transitions. [2020-10-29 03:59:10,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:59:10,856 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2020-10-29 03:59:10,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:10,857 INFO L225 Difference]: With dead ends: 254 [2020-10-29 03:59:10,858 INFO L226 Difference]: Without dead ends: 152 [2020-10-29 03:59:10,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:59:10,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-29 03:59:10,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2020-10-29 03:59:10,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-29 03:59:10,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 169 transitions. [2020-10-29 03:59:10,868 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 169 transitions. Word has length 58 [2020-10-29 03:59:10,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:10,868 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 169 transitions. [2020-10-29 03:59:10,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:59:10,868 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 169 transitions. [2020-10-29 03:59:10,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 03:59:10,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:10,875 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:10,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:59:10,875 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:10,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:10,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1540833893, now seen corresponding path program 18 times [2020-10-29 03:59:10,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:10,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617826637] [2020-10-29 03:59:10,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:10,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:11,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:11,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:59:11,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:11,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-10-29 03:59:11,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:11,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:59:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:59:11,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:11,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:11,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:11,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:11,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:11,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:11,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:59:11,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:11,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:11,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:11,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:11,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:11,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:11,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 03:59:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:11,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:11,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:11,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:11,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:11,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:11,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:11,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:11,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:11,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:11,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:11,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:11,688 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 2 proven. 324 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:11,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617826637] [2020-10-29 03:59:11,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:11,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:59:11,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425228897] [2020-10-29 03:59:11,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:59:11,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:11,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:59:11,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:59:11,696 INFO L87 Difference]: Start difference. First operand 150 states and 169 transitions. Second operand 22 states. [2020-10-29 03:59:12,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:12,288 INFO L93 Difference]: Finished difference Result 266 states and 306 transitions. [2020-10-29 03:59:12,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:59:12,289 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 60 [2020-10-29 03:59:12,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:12,290 INFO L225 Difference]: With dead ends: 266 [2020-10-29 03:59:12,290 INFO L226 Difference]: Without dead ends: 159 [2020-10-29 03:59:12,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:59:12,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-29 03:59:12,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2020-10-29 03:59:12,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-29 03:59:12,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 177 transitions. [2020-10-29 03:59:12,301 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 177 transitions. Word has length 60 [2020-10-29 03:59:12,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:12,302 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 177 transitions. [2020-10-29 03:59:12,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:59:12,302 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 177 transitions. [2020-10-29 03:59:12,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 03:59:12,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:12,303 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:12,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:59:12,303 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:12,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:12,304 INFO L82 PathProgramCache]: Analyzing trace with hash -463779779, now seen corresponding path program 19 times [2020-10-29 03:59:12,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:12,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015461157] [2020-10-29 03:59:12,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:12,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:12,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:12,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 03:59:12,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:12,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-10-29 03:59:12,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:12,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:12,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:59:12,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:12,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:59:12,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:13,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:13,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:13,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:13,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:13,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:13,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:59:13,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:13,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:13,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:59:13,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:59:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:13,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:13,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:13,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:13,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:13,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 03:59:13,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:13,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:13,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:13,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:13,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:13,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:13,177 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 2 proven. 361 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:13,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015461157] [2020-10-29 03:59:13,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:13,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:59:13,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44081653] [2020-10-29 03:59:13,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:59:13,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:13,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:59:13,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:59:13,179 INFO L87 Difference]: Start difference. First operand 157 states and 177 transitions. Second operand 23 states. [2020-10-29 03:59:13,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:13,804 INFO L93 Difference]: Finished difference Result 278 states and 320 transitions. [2020-10-29 03:59:13,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:59:13,805 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 62 [2020-10-29 03:59:13,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:13,806 INFO L225 Difference]: With dead ends: 278 [2020-10-29 03:59:13,806 INFO L226 Difference]: Without dead ends: 166 [2020-10-29 03:59:13,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:59:13,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-29 03:59:13,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-10-29 03:59:13,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-29 03:59:13,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 185 transitions. [2020-10-29 03:59:13,818 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 185 transitions. Word has length 62 [2020-10-29 03:59:13,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:13,818 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 185 transitions. [2020-10-29 03:59:13,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:59:13,818 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 185 transitions. [2020-10-29 03:59:13,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 03:59:13,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:13,819 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:13,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:59:13,819 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:13,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:13,820 INFO L82 PathProgramCache]: Analyzing trace with hash -501894561, now seen corresponding path program 20 times [2020-10-29 03:59:13,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:13,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502235884] [2020-10-29 03:59:13,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:13,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:14,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:14,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 03:59:14,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:14,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-29 03:59:14,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:14,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:14,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:59:14,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:14,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:59:14,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:14,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:14,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:14,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:14,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:14,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:14,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:59:14,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:14,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:14,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:14,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:14,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:14,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:14,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 03:59:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:14,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:14,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:14,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:14,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:14,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:14,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:14,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:14,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:14,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:14,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:14,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:14,737 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 2 proven. 400 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:14,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502235884] [2020-10-29 03:59:14,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:14,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:59:14,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973887891] [2020-10-29 03:59:14,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:59:14,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:14,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:59:14,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:59:14,739 INFO L87 Difference]: Start difference. First operand 164 states and 185 transitions. Second operand 24 states. [2020-10-29 03:59:15,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:15,322 INFO L93 Difference]: Finished difference Result 290 states and 334 transitions. [2020-10-29 03:59:15,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:59:15,323 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 64 [2020-10-29 03:59:15,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:15,324 INFO L225 Difference]: With dead ends: 290 [2020-10-29 03:59:15,324 INFO L226 Difference]: Without dead ends: 173 [2020-10-29 03:59:15,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:59:15,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-29 03:59:15,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 171. [2020-10-29 03:59:15,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-29 03:59:15,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 193 transitions. [2020-10-29 03:59:15,335 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 193 transitions. Word has length 64 [2020-10-29 03:59:15,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:15,335 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 193 transitions. [2020-10-29 03:59:15,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:59:15,335 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 193 transitions. [2020-10-29 03:59:15,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 03:59:15,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:15,336 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:15,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:59:15,336 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:15,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:15,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1524505601, now seen corresponding path program 21 times [2020-10-29 03:59:15,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:15,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071059431] [2020-10-29 03:59:15,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:15,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:15,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:15,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 03:59:15,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:15,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-10-29 03:59:15,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:15,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:15,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:59:15,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:59:15,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:16,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:16,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:16,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:16,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:16,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:16,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:59:16,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:16,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:16,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:16,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:16,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:16,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:16,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:59:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:16,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:16,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:16,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:16,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:16,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:59:16,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:16,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:16,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:16,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:16,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:16,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 2 proven. 441 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:16,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071059431] [2020-10-29 03:59:16,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:16,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:59:16,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394217407] [2020-10-29 03:59:16,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:59:16,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:16,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:59:16,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:59:16,308 INFO L87 Difference]: Start difference. First operand 171 states and 193 transitions. Second operand 25 states. [2020-10-29 03:59:16,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:16,947 INFO L93 Difference]: Finished difference Result 302 states and 348 transitions. [2020-10-29 03:59:16,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:59:16,947 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 66 [2020-10-29 03:59:16,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:16,949 INFO L225 Difference]: With dead ends: 302 [2020-10-29 03:59:16,949 INFO L226 Difference]: Without dead ends: 180 [2020-10-29 03:59:16,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:59:16,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-29 03:59:16,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2020-10-29 03:59:16,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-29 03:59:16,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 201 transitions. [2020-10-29 03:59:16,959 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 201 transitions. Word has length 66 [2020-10-29 03:59:16,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:16,959 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 201 transitions. [2020-10-29 03:59:16,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:59:16,959 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 201 transitions. [2020-10-29 03:59:16,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 03:59:16,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:16,960 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:16,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:59:16,960 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:16,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:16,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1020091101, now seen corresponding path program 22 times [2020-10-29 03:59:16,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:16,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516948904] [2020-10-29 03:59:16,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:16,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:17,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:17,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 03:59:17,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:17,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-29 03:59:17,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:17,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:17,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:59:17,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:17,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:59:17,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:17,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:17,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:17,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:17,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:17,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:17,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:59:17,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:17,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:17,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:17,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:17,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:17,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:17,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 03:59:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:17,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:17,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:17,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:17,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:17,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:17,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:17,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:17,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:17,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:17,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:17,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:17,986 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:17,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516948904] [2020-10-29 03:59:17,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:17,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:59:17,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629761883] [2020-10-29 03:59:17,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:59:17,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:17,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:59:17,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:59:17,989 INFO L87 Difference]: Start difference. First operand 178 states and 201 transitions. Second operand 26 states. [2020-10-29 03:59:18,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:18,525 INFO L93 Difference]: Finished difference Result 314 states and 362 transitions. [2020-10-29 03:59:18,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:59:18,526 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 68 [2020-10-29 03:59:18,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:18,527 INFO L225 Difference]: With dead ends: 314 [2020-10-29 03:59:18,527 INFO L226 Difference]: Without dead ends: 187 [2020-10-29 03:59:18,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:59:18,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-29 03:59:18,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2020-10-29 03:59:18,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-29 03:59:18,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 209 transitions. [2020-10-29 03:59:18,538 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 209 transitions. Word has length 68 [2020-10-29 03:59:18,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:18,538 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 209 transitions. [2020-10-29 03:59:18,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:59:18,539 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 209 transitions. [2020-10-29 03:59:18,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:59:18,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:18,539 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:18,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:59:18,540 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:18,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:18,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1753836997, now seen corresponding path program 23 times [2020-10-29 03:59:18,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:18,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726768462] [2020-10-29 03:59:18,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:18,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:19,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:19,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 03:59:19,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:19,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-10-29 03:59:19,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:19,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:19,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:59:19,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:19,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:59:19,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:19,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:19,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:19,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:19,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:19,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:19,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:59:19,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:19,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:19,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:19,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:19,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:19,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:19,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:59:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:19,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:19,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:19,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:19,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:19,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:19,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:19,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:19,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:19,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:19,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:19,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:19,648 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 2 proven. 529 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:19,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726768462] [2020-10-29 03:59:19,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:19,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:59:19,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195893534] [2020-10-29 03:59:19,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:59:19,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:19,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:59:19,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:59:19,651 INFO L87 Difference]: Start difference. First operand 185 states and 209 transitions. Second operand 27 states. [2020-10-29 03:59:20,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:20,237 INFO L93 Difference]: Finished difference Result 326 states and 376 transitions. [2020-10-29 03:59:20,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:59:20,237 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 70 [2020-10-29 03:59:20,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:20,239 INFO L225 Difference]: With dead ends: 326 [2020-10-29 03:59:20,239 INFO L226 Difference]: Without dead ends: 194 [2020-10-29 03:59:20,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:59:20,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-29 03:59:20,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2020-10-29 03:59:20,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-29 03:59:20,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 217 transitions. [2020-10-29 03:59:20,249 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 217 transitions. Word has length 70 [2020-10-29 03:59:20,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:20,249 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 217 transitions. [2020-10-29 03:59:20,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:59:20,250 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 217 transitions. [2020-10-29 03:59:20,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 03:59:20,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:20,250 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:20,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:59:20,251 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:20,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:20,251 INFO L82 PathProgramCache]: Analyzing trace with hash 324048359, now seen corresponding path program 24 times [2020-10-29 03:59:20,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:20,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114346580] [2020-10-29 03:59:20,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:20,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:20,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:20,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 03:59:20,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:20,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-29 03:59:20,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:20,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:20,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:59:20,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:20,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:59:20,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:21,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:21,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:21,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:21,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:21,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:21,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:59:21,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:21,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:21,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:21,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:21,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:21,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:21,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 03:59:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:21,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:21,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:21,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:21,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:21,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:21,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:21,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:21,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:21,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:21,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:21,455 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 2 proven. 576 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:21,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114346580] [2020-10-29 03:59:21,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:21,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:59:21,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203516729] [2020-10-29 03:59:21,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:59:21,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:21,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:59:21,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:59:21,457 INFO L87 Difference]: Start difference. First operand 192 states and 217 transitions. Second operand 28 states. [2020-10-29 03:59:22,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:22,161 INFO L93 Difference]: Finished difference Result 338 states and 390 transitions. [2020-10-29 03:59:22,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:59:22,162 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 72 [2020-10-29 03:59:22,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:22,166 INFO L225 Difference]: With dead ends: 338 [2020-10-29 03:59:22,166 INFO L226 Difference]: Without dead ends: 201 [2020-10-29 03:59:22,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:59:22,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-29 03:59:22,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2020-10-29 03:59:22,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-29 03:59:22,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 225 transitions. [2020-10-29 03:59:22,186 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 225 transitions. Word has length 72 [2020-10-29 03:59:22,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:22,186 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 225 transitions. [2020-10-29 03:59:22,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:59:22,186 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 225 transitions. [2020-10-29 03:59:22,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 03:59:22,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:22,187 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:22,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:59:22,188 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:22,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:22,188 INFO L82 PathProgramCache]: Analyzing trace with hash 686701961, now seen corresponding path program 25 times [2020-10-29 03:59:22,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:22,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372313778] [2020-10-29 03:59:22,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:22,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:22,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:22,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 03:59:22,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:22,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 632 [2020-10-29 03:59:22,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:22,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:22,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:59:22,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:22,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:59:22,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:23,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:23,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:23,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:23,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:23,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:23,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:59:23,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:23,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:23,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:23,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:59:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:23,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:23,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:23,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:23,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:23,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:23,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:23,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:23,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:23,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:23,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:23,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 2 proven. 625 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:23,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372313778] [2020-10-29 03:59:23,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:23,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:59:23,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576769747] [2020-10-29 03:59:23,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:59:23,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:23,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:59:23,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:59:23,378 INFO L87 Difference]: Start difference. First operand 199 states and 225 transitions. Second operand 29 states. [2020-10-29 03:59:24,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:24,204 INFO L93 Difference]: Finished difference Result 350 states and 404 transitions. [2020-10-29 03:59:24,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:59:24,205 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 74 [2020-10-29 03:59:24,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:24,206 INFO L225 Difference]: With dead ends: 350 [2020-10-29 03:59:24,207 INFO L226 Difference]: Without dead ends: 208 [2020-10-29 03:59:24,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:59:24,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-29 03:59:24,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2020-10-29 03:59:24,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-29 03:59:24,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 233 transitions. [2020-10-29 03:59:24,218 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 233 transitions. Word has length 74 [2020-10-29 03:59:24,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:24,219 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 233 transitions. [2020-10-29 03:59:24,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:59:24,219 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 233 transitions. [2020-10-29 03:59:24,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 03:59:24,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:24,220 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:24,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:59:24,220 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:24,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:24,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1304462507, now seen corresponding path program 26 times [2020-10-29 03:59:24,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:24,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138054756] [2020-10-29 03:59:24,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:24,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:24,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:24,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 03:59:24,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:24,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-29 03:59:24,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:24,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:24,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:59:24,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:24,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:59:24,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:25,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:25,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:25,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:25,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:25,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:25,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:59:25,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:25,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:25,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:25,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 03:59:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:25,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:25,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:25,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:25,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:25,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:59:25,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:25,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:25,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 2 proven. 676 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:25,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138054756] [2020-10-29 03:59:25,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:25,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:59:25,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316624117] [2020-10-29 03:59:25,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:59:25,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:25,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:59:25,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:59:25,544 INFO L87 Difference]: Start difference. First operand 206 states and 233 transitions. Second operand 30 states. [2020-10-29 03:59:26,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:26,424 INFO L93 Difference]: Finished difference Result 362 states and 418 transitions. [2020-10-29 03:59:26,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:59:26,425 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 76 [2020-10-29 03:59:26,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:26,427 INFO L225 Difference]: With dead ends: 362 [2020-10-29 03:59:26,427 INFO L226 Difference]: Without dead ends: 215 [2020-10-29 03:59:26,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:59:26,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-29 03:59:26,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2020-10-29 03:59:26,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-29 03:59:26,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 241 transitions. [2020-10-29 03:59:26,440 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 241 transitions. Word has length 76 [2020-10-29 03:59:26,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:26,440 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 241 transitions. [2020-10-29 03:59:26,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:59:26,440 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 241 transitions. [2020-10-29 03:59:26,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 03:59:26,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:26,441 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:26,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:59:26,441 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:26,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:26,442 INFO L82 PathProgramCache]: Analyzing trace with hash -2028106931, now seen corresponding path program 27 times [2020-10-29 03:59:26,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:26,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345773891] [2020-10-29 03:59:26,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:26,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:27,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:27,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:59:27,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:27,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-10-29 03:59:27,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:27,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:59:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:59:27,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:59:27,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:27,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:27,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:27,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:27,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:27,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:59:27,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:27,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:27,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:27,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:59:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:27,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:27,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:27,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:27,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:27,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:27,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:27,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:27,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:27,756 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 2 proven. 729 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:27,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345773891] [2020-10-29 03:59:27,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:27,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:59:27,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823693733] [2020-10-29 03:59:27,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:59:27,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:27,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:59:27,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:59:27,759 INFO L87 Difference]: Start difference. First operand 213 states and 241 transitions. Second operand 31 states. [2020-10-29 03:59:28,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:28,509 INFO L93 Difference]: Finished difference Result 374 states and 432 transitions. [2020-10-29 03:59:28,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:59:28,509 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 78 [2020-10-29 03:59:28,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:28,511 INFO L225 Difference]: With dead ends: 374 [2020-10-29 03:59:28,511 INFO L226 Difference]: Without dead ends: 222 [2020-10-29 03:59:28,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:59:28,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-29 03:59:28,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2020-10-29 03:59:28,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-29 03:59:28,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 249 transitions. [2020-10-29 03:59:28,524 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 249 transitions. Word has length 78 [2020-10-29 03:59:28,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:28,525 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 249 transitions. [2020-10-29 03:59:28,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:59:28,525 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 249 transitions. [2020-10-29 03:59:28,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 03:59:28,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:28,526 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:28,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:59:28,526 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:28,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:28,527 INFO L82 PathProgramCache]: Analyzing trace with hash -581734033, now seen corresponding path program 28 times [2020-10-29 03:59:28,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:28,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404345431] [2020-10-29 03:59:28,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:28,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:29,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:29,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 03:59:29,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:29,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 687 [2020-10-29 03:59:29,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:29,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:59:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:29,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:59:29,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:29,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:29,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:29,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:29,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:29,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:29,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:59:29,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:29,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:29,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:29,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:29,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:29,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:29,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 03:59:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:29,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:29,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:29,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:29,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:29,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:59:29,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:29,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:29,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:29,927 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 2 proven. 784 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:29,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404345431] [2020-10-29 03:59:29,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:29,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:59:29,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706692331] [2020-10-29 03:59:29,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:59:29,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:29,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:59:29,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:59:29,929 INFO L87 Difference]: Start difference. First operand 220 states and 249 transitions. Second operand 32 states. [2020-10-29 03:59:30,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:30,922 INFO L93 Difference]: Finished difference Result 386 states and 446 transitions. [2020-10-29 03:59:30,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:59:30,922 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 80 [2020-10-29 03:59:30,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:30,925 INFO L225 Difference]: With dead ends: 386 [2020-10-29 03:59:30,925 INFO L226 Difference]: Without dead ends: 229 [2020-10-29 03:59:30,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:59:30,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-29 03:59:30,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 227. [2020-10-29 03:59:30,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-29 03:59:30,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 257 transitions. [2020-10-29 03:59:30,939 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 257 transitions. Word has length 80 [2020-10-29 03:59:30,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:30,939 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 257 transitions. [2020-10-29 03:59:30,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:59:30,939 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 257 transitions. [2020-10-29 03:59:30,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 03:59:30,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:30,940 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:30,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:59:30,940 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:30,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:30,941 INFO L82 PathProgramCache]: Analyzing trace with hash 2108184337, now seen corresponding path program 29 times [2020-10-29 03:59:30,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:30,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672725101] [2020-10-29 03:59:30,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:30,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:31,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:31,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 03:59:31,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:31,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-10-29 03:59:31,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:31,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:31,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:59:31,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:31,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:59:31,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:32,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:32,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:32,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:32,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:32,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:32,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:59:32,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:32,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:32,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:32,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:32,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:32,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:32,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 03:59:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:32,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:32,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:32,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:32,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:32,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:32,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:32,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:32,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:32,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:32,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:32,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:32,328 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 2 proven. 841 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:32,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672725101] [2020-10-29 03:59:32,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:32,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:59:32,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476322345] [2020-10-29 03:59:32,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:59:32,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:32,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:59:32,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:59:32,331 INFO L87 Difference]: Start difference. First operand 227 states and 257 transitions. Second operand 33 states. [2020-10-29 03:59:33,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:33,141 INFO L93 Difference]: Finished difference Result 398 states and 460 transitions. [2020-10-29 03:59:33,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:59:33,142 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 82 [2020-10-29 03:59:33,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:33,144 INFO L225 Difference]: With dead ends: 398 [2020-10-29 03:59:33,144 INFO L226 Difference]: Without dead ends: 236 [2020-10-29 03:59:33,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:59:33,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-29 03:59:33,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 234. [2020-10-29 03:59:33,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-29 03:59:33,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 265 transitions. [2020-10-29 03:59:33,163 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 265 transitions. Word has length 82 [2020-10-29 03:59:33,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:33,163 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 265 transitions. [2020-10-29 03:59:33,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:59:33,163 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 265 transitions. [2020-10-29 03:59:33,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 03:59:33,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:33,164 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:33,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:59:33,164 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:33,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:33,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1549425715, now seen corresponding path program 30 times [2020-10-29 03:59:33,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:33,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329624574] [2020-10-29 03:59:33,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:33,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:33,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:33,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 03:59:33,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:33,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-10-29 03:59:33,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:33,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:33,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:59:33,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:33,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:59:33,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:34,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:34,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:34,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:34,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:34,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:34,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:59:34,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:34,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:34,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:34,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:34,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:34,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:34,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 03:59:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:34,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:34,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:34,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:34,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:34,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:34,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:34,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:34,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:34,515 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 2 proven. 900 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:34,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329624574] [2020-10-29 03:59:34,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:34,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:59:34,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821598204] [2020-10-29 03:59:34,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:59:34,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:34,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:59:34,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:59:34,517 INFO L87 Difference]: Start difference. First operand 234 states and 265 transitions. Second operand 34 states. [2020-10-29 03:59:35,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:35,558 INFO L93 Difference]: Finished difference Result 410 states and 474 transitions. [2020-10-29 03:59:35,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:59:35,558 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 84 [2020-10-29 03:59:35,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:35,561 INFO L225 Difference]: With dead ends: 410 [2020-10-29 03:59:35,561 INFO L226 Difference]: Without dead ends: 243 [2020-10-29 03:59:35,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:59:35,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-29 03:59:35,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2020-10-29 03:59:35,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-29 03:59:35,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 273 transitions. [2020-10-29 03:59:35,575 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 273 transitions. Word has length 84 [2020-10-29 03:59:35,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:35,575 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 273 transitions. [2020-10-29 03:59:35,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:59:35,575 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 273 transitions. [2020-10-29 03:59:35,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-29 03:59:35,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:35,576 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:35,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:59:35,576 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:35,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:35,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1453301973, now seen corresponding path program 31 times [2020-10-29 03:59:35,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:35,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51454484] [2020-10-29 03:59:35,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:35,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:36,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:36,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 03:59:36,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:36,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 795 [2020-10-29 03:59:36,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:36,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:36,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:59:36,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:36,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:59:36,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:37,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:37,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:37,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:37,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:37,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:37,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:59:37,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:37,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:37,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:37,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:37,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:37,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:37,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:59:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:37,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:37,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:37,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:37,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:37,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:37,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:37,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:37,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:37,188 INFO L134 CoverageAnalysis]: Checked inductivity of 965 backedges. 2 proven. 961 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:37,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51454484] [2020-10-29 03:59:37,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:37,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:59:37,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390489168] [2020-10-29 03:59:37,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:59:37,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:37,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:59:37,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:59:37,190 INFO L87 Difference]: Start difference. First operand 241 states and 273 transitions. Second operand 35 states. [2020-10-29 03:59:38,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:38,316 INFO L93 Difference]: Finished difference Result 422 states and 488 transitions. [2020-10-29 03:59:38,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:59:38,317 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 86 [2020-10-29 03:59:38,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:38,321 INFO L225 Difference]: With dead ends: 422 [2020-10-29 03:59:38,321 INFO L226 Difference]: Without dead ends: 250 [2020-10-29 03:59:38,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:59:38,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-29 03:59:38,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2020-10-29 03:59:38,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-29 03:59:38,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 281 transitions. [2020-10-29 03:59:38,345 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 281 transitions. Word has length 86 [2020-10-29 03:59:38,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:38,346 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 281 transitions. [2020-10-29 03:59:38,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 03:59:38,346 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 281 transitions. [2020-10-29 03:59:38,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 03:59:38,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:38,346 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:38,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:59:38,347 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:38,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:38,347 INFO L82 PathProgramCache]: Analyzing trace with hash -727300873, now seen corresponding path program 32 times [2020-10-29 03:59:38,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:38,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794307779] [2020-10-29 03:59:38,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:38,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:38,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:38,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 03:59:38,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:38,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-10-29 03:59:38,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:38,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:59:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:38,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 03:59:38,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:39,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:39,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:39,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:39,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:39,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:39,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:59:39,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:39,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:39,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:39,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 03:59:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:39,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:39,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:39,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:39,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:39,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:39,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:39,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:39,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:39,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:39,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:39,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 2 proven. 1024 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:39,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794307779] [2020-10-29 03:59:39,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:39,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:59:39,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219862920] [2020-10-29 03:59:39,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:59:39,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:39,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:59:39,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:59:39,867 INFO L87 Difference]: Start difference. First operand 248 states and 281 transitions. Second operand 36 states. [2020-10-29 03:59:40,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:40,905 INFO L93 Difference]: Finished difference Result 434 states and 502 transitions. [2020-10-29 03:59:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:59:40,905 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 88 [2020-10-29 03:59:40,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:40,908 INFO L225 Difference]: With dead ends: 434 [2020-10-29 03:59:40,908 INFO L226 Difference]: Without dead ends: 257 [2020-10-29 03:59:40,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:59:40,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-29 03:59:40,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 255. [2020-10-29 03:59:40,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-29 03:59:40,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 289 transitions. [2020-10-29 03:59:40,921 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 289 transitions. Word has length 88 [2020-10-29 03:59:40,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:40,922 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 289 transitions. [2020-10-29 03:59:40,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:59:40,922 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 289 transitions. [2020-10-29 03:59:40,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 03:59:40,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:40,923 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:40,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:59:40,923 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:40,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:40,923 INFO L82 PathProgramCache]: Analyzing trace with hash -342595431, now seen corresponding path program 33 times [2020-10-29 03:59:40,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:40,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649624588] [2020-10-29 03:59:40,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:40,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:41,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:41,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 03:59:41,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:41,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-10-29 03:59:41,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:41,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:41,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 03:59:41,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:41,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 03:59:41,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:42,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:42,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:42,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:42,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:42,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:42,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:59:42,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:42,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:42,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:42,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:42,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:42,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:42,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 03:59:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:42,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:42,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:42,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:42,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:42,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:42,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:42,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:42,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:42,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:42,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:42,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:42,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1093 backedges. 2 proven. 1089 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:42,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649624588] [2020-10-29 03:59:42,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:42,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 03:59:42,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190547029] [2020-10-29 03:59:42,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 03:59:42,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:42,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 03:59:42,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:59:42,520 INFO L87 Difference]: Start difference. First operand 255 states and 289 transitions. Second operand 37 states. [2020-10-29 03:59:43,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:43,611 INFO L93 Difference]: Finished difference Result 446 states and 516 transitions. [2020-10-29 03:59:43,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 03:59:43,612 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 90 [2020-10-29 03:59:43,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:43,614 INFO L225 Difference]: With dead ends: 446 [2020-10-29 03:59:43,614 INFO L226 Difference]: Without dead ends: 264 [2020-10-29 03:59:43,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:59:43,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-29 03:59:43,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2020-10-29 03:59:43,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-29 03:59:43,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 297 transitions. [2020-10-29 03:59:43,627 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 297 transitions. Word has length 90 [2020-10-29 03:59:43,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:43,627 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 297 transitions. [2020-10-29 03:59:43,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 03:59:43,628 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 297 transitions. [2020-10-29 03:59:43,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 03:59:43,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:43,628 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:43,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 03:59:43,629 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:43,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:43,629 INFO L82 PathProgramCache]: Analyzing trace with hash -7853125, now seen corresponding path program 34 times [2020-10-29 03:59:43,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:43,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829302803] [2020-10-29 03:59:43,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:43,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:44,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:44,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 03:59:44,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:44,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 806 [2020-10-29 03:59:44,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:44,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:44,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 03:59:44,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:44,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 03:59:44,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:45,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:45,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:45,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:45,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:45,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:45,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:59:45,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:45,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:45,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:45,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:45,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:45,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:45,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 03:59:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:45,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:45,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:45,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:45,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:45,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:45,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:45,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:45,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:45,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:45,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:45,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:45,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 2 proven. 1156 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:45,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829302803] [2020-10-29 03:59:45,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:45,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 03:59:45,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928925233] [2020-10-29 03:59:45,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 03:59:45,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:45,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 03:59:45,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:59:45,437 INFO L87 Difference]: Start difference. First operand 262 states and 297 transitions. Second operand 38 states. [2020-10-29 03:59:46,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:46,675 INFO L93 Difference]: Finished difference Result 458 states and 530 transitions. [2020-10-29 03:59:46,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:59:46,675 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 92 [2020-10-29 03:59:46,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:46,677 INFO L225 Difference]: With dead ends: 458 [2020-10-29 03:59:46,677 INFO L226 Difference]: Without dead ends: 271 [2020-10-29 03:59:46,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:59:46,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-29 03:59:46,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 269. [2020-10-29 03:59:46,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-29 03:59:46,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 305 transitions. [2020-10-29 03:59:46,695 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 305 transitions. Word has length 92 [2020-10-29 03:59:46,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:46,695 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 305 transitions. [2020-10-29 03:59:46,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 03:59:46,695 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 305 transitions. [2020-10-29 03:59:46,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 03:59:46,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:46,697 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:46,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 03:59:46,698 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:46,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:46,698 INFO L82 PathProgramCache]: Analyzing trace with hash -443044259, now seen corresponding path program 35 times [2020-10-29 03:59:46,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:46,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103408774] [2020-10-29 03:59:46,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:46,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:47,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:47,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 03:59:47,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:47,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 641 [2020-10-29 03:59:47,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:47,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:47,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-29 03:59:47,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:47,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 03:59:47,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:48,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:48,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:48,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:48,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:48,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:48,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:59:48,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:48,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:48,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:48,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 03:59:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:48,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:48,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:48,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:48,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:48,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:59:48,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:48,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:48,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:48,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:48,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:48,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:48,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1229 backedges. 2 proven. 1225 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:48,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103408774] [2020-10-29 03:59:48,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:48,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-29 03:59:48,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485986959] [2020-10-29 03:59:48,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-29 03:59:48,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:48,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-29 03:59:48,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:59:48,390 INFO L87 Difference]: Start difference. First operand 269 states and 305 transitions. Second operand 39 states. [2020-10-29 03:59:49,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:49,696 INFO L93 Difference]: Finished difference Result 470 states and 544 transitions. [2020-10-29 03:59:49,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 03:59:49,697 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 94 [2020-10-29 03:59:49,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:49,699 INFO L225 Difference]: With dead ends: 470 [2020-10-29 03:59:49,699 INFO L226 Difference]: Without dead ends: 278 [2020-10-29 03:59:49,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:59:49,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-29 03:59:49,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 276. [2020-10-29 03:59:49,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-29 03:59:49,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 313 transitions. [2020-10-29 03:59:49,718 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 313 transitions. Word has length 94 [2020-10-29 03:59:49,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:49,718 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 313 transitions. [2020-10-29 03:59:49,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-29 03:59:49,719 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 313 transitions. [2020-10-29 03:59:49,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 03:59:49,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:49,719 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:49,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 03:59:49,720 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:49,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:49,720 INFO L82 PathProgramCache]: Analyzing trace with hash -2049896321, now seen corresponding path program 36 times [2020-10-29 03:59:49,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:49,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240925479] [2020-10-29 03:59:49,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:49,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:50,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:50,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 03:59:50,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:50,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 706 [2020-10-29 03:59:50,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:50,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:50,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-29 03:59:50,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:50,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 03:59:50,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:51,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:51,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:51,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:51,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:51,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:51,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:59:51,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:51,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:51,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:51,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:51,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:51,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:51,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 03:59:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:51,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:51,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:51,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:51,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:51,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:51,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:51,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:51,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:51,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 2 proven. 1296 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:51,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240925479] [2020-10-29 03:59:51,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:51,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-29 03:59:51,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483253977] [2020-10-29 03:59:51,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-29 03:59:51,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:51,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-29 03:59:51,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:59:51,517 INFO L87 Difference]: Start difference. First operand 276 states and 313 transitions. Second operand 40 states. [2020-10-29 03:59:52,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:52,897 INFO L93 Difference]: Finished difference Result 482 states and 558 transitions. [2020-10-29 03:59:52,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 03:59:52,897 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 96 [2020-10-29 03:59:52,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:52,899 INFO L225 Difference]: With dead ends: 482 [2020-10-29 03:59:52,899 INFO L226 Difference]: Without dead ends: 285 [2020-10-29 03:59:52,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:59:52,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-29 03:59:52,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 283. [2020-10-29 03:59:52,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-10-29 03:59:52,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 321 transitions. [2020-10-29 03:59:52,912 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 321 transitions. Word has length 96 [2020-10-29 03:59:52,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:52,912 INFO L481 AbstractCegarLoop]: Abstraction has 283 states and 321 transitions. [2020-10-29 03:59:52,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-29 03:59:52,912 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 321 transitions. [2020-10-29 03:59:52,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 03:59:52,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:52,913 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:52,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 03:59:52,914 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:52,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:52,914 INFO L82 PathProgramCache]: Analyzing trace with hash -46501343, now seen corresponding path program 37 times [2020-10-29 03:59:52,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:52,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663791835] [2020-10-29 03:59:52,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:52,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:53,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:53,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 03:59:53,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:53,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 824 [2020-10-29 03:59:53,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:53,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:53,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-29 03:59:53,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:53,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 03:59:53,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:54,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:54,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:54,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:54,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:54,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:54,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:59:54,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:54,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:54,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:54,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:54,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:54,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:54,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 03:59:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:54,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:54,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:54,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:54,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:54,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:59:54,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:54,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:54,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:54,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:54,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:54,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 2 proven. 1369 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:54,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663791835] [2020-10-29 03:59:54,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:54,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-29 03:59:54,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139449847] [2020-10-29 03:59:54,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-29 03:59:54,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:54,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-29 03:59:54,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:59:54,896 INFO L87 Difference]: Start difference. First operand 283 states and 321 transitions. Second operand 41 states. [2020-10-29 03:59:56,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:56,335 INFO L93 Difference]: Finished difference Result 494 states and 572 transitions. [2020-10-29 03:59:56,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-29 03:59:56,336 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 98 [2020-10-29 03:59:56,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:56,338 INFO L225 Difference]: With dead ends: 494 [2020-10-29 03:59:56,338 INFO L226 Difference]: Without dead ends: 292 [2020-10-29 03:59:56,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:59:56,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-29 03:59:56,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 290. [2020-10-29 03:59:56,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-29 03:59:56,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 329 transitions. [2020-10-29 03:59:56,351 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 329 transitions. Word has length 98 [2020-10-29 03:59:56,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:56,351 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 329 transitions. [2020-10-29 03:59:56,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-29 03:59:56,351 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 329 transitions. [2020-10-29 03:59:56,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 03:59:56,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:56,352 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:56,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 03:59:56,352 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:56,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:56,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1070723907, now seen corresponding path program 38 times [2020-10-29 03:59:56,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:56,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775495315] [2020-10-29 03:59:56,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:56,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:57,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:57,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 03:59:57,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:57,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 840 [2020-10-29 03:59:57,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:57,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:57,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-29 03:59:57,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:59:57,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 03:59:57,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:58,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:58,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:58,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:58,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:58,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:58,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:58,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:58,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:58,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:58,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:58,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:58,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:58,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-29 03:59:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:58,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:58,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:58,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:58,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:58,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:59:58,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:58,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:59:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:58,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1448 backedges. 2 proven. 1444 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:59:58,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775495315] [2020-10-29 03:59:58,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:58,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-29 03:59:58,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157812857] [2020-10-29 03:59:58,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-29 03:59:58,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:58,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-29 03:59:58,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:59:58,415 INFO L87 Difference]: Start difference. First operand 290 states and 329 transitions. Second operand 42 states. [2020-10-29 03:59:59,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:59,917 INFO L93 Difference]: Finished difference Result 506 states and 586 transitions. [2020-10-29 03:59:59,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 03:59:59,918 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 100 [2020-10-29 03:59:59,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:59,919 INFO L225 Difference]: With dead ends: 506 [2020-10-29 03:59:59,919 INFO L226 Difference]: Without dead ends: 299 [2020-10-29 03:59:59,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:59:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-29 03:59:59,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 297. [2020-10-29 03:59:59,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-10-29 03:59:59,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 337 transitions. [2020-10-29 03:59:59,932 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 337 transitions. Word has length 100 [2020-10-29 03:59:59,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:59,932 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 337 transitions. [2020-10-29 03:59:59,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-29 03:59:59,933 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 337 transitions. [2020-10-29 03:59:59,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 03:59:59,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:59,933 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:59:59,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 03:59:59,934 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:59,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:59,934 INFO L82 PathProgramCache]: Analyzing trace with hash 982365157, now seen corresponding path program 39 times [2020-10-29 03:59:59,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:59,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679335184] [2020-10-29 03:59:59,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:59,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:00,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:00,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 04:00:00,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:00,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 738 [2020-10-29 04:00:00,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:00,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-29 04:00:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:00:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 04:00:00,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:01,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:01,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:01,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:01,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:01,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:01,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:00:01,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:01,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:01,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:01,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:01,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:01,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:01,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 04:00:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:01,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:01,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:01,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:00:01,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:01,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:00:01,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:01,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:01,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:01,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:00:01,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:01,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 2 proven. 1521 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:00:01,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679335184] [2020-10-29 04:00:01,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:01,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-29 04:00:01,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180413819] [2020-10-29 04:00:01,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-29 04:00:01,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:01,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-29 04:00:01,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 04:00:01,949 INFO L87 Difference]: Start difference. First operand 297 states and 337 transitions. Second operand 43 states. [2020-10-29 04:00:03,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:03,306 INFO L93 Difference]: Finished difference Result 518 states and 600 transitions. [2020-10-29 04:00:03,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-29 04:00:03,306 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 102 [2020-10-29 04:00:03,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:03,309 INFO L225 Difference]: With dead ends: 518 [2020-10-29 04:00:03,309 INFO L226 Difference]: Without dead ends: 306 [2020-10-29 04:00:03,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 04:00:03,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-29 04:00:03,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2020-10-29 04:00:03,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-10-29 04:00:03,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 345 transitions. [2020-10-29 04:00:03,322 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 345 transitions. Word has length 102 [2020-10-29 04:00:03,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:03,322 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 345 transitions. [2020-10-29 04:00:03,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-29 04:00:03,322 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 345 transitions. [2020-10-29 04:00:03,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 04:00:03,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:03,323 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:00:03,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 04:00:03,323 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:03,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:03,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1968952327, now seen corresponding path program 40 times [2020-10-29 04:00:03,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:03,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109790885] [2020-10-29 04:00:03,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:03,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:04,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:04,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 04:00:04,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:04,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 865 [2020-10-29 04:00:04,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:04,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:04,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-29 04:00:04,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:00:04,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 04:00:04,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:05,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:05,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:05,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:05,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:05,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:05,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:00:05,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:05,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:05,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:05,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:05,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:05,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:05,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-29 04:00:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:05,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:05,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:05,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:00:05,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:05,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:00:05,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:05,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:05,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:05,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:00:05,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:05,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1604 backedges. 2 proven. 1600 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:00:05,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109790885] [2020-10-29 04:00:05,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:05,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-29 04:00:05,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617558224] [2020-10-29 04:00:05,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-29 04:00:05,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:05,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-29 04:00:05,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 04:00:05,533 INFO L87 Difference]: Start difference. First operand 304 states and 345 transitions. Second operand 44 states. [2020-10-29 04:00:06,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:06,986 INFO L93 Difference]: Finished difference Result 530 states and 614 transitions. [2020-10-29 04:00:06,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-29 04:00:06,987 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 104 [2020-10-29 04:00:06,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:06,990 INFO L225 Difference]: With dead ends: 530 [2020-10-29 04:00:06,990 INFO L226 Difference]: Without dead ends: 313 [2020-10-29 04:00:06,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 04:00:06,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-29 04:00:07,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 311. [2020-10-29 04:00:07,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-10-29 04:00:07,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 353 transitions. [2020-10-29 04:00:07,003 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 353 transitions. Word has length 104 [2020-10-29 04:00:07,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:07,003 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 353 transitions. [2020-10-29 04:00:07,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-29 04:00:07,003 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 353 transitions. [2020-10-29 04:00:07,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 04:00:07,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:07,004 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:00:07,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 04:00:07,004 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:07,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:07,005 INFO L82 PathProgramCache]: Analyzing trace with hash 891450281, now seen corresponding path program 41 times [2020-10-29 04:00:07,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:07,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728000076] [2020-10-29 04:00:07,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:07,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:07,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:07,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 04:00:07,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:07,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 888 [2020-10-29 04:00:07,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:07,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-29 04:00:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:00:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 04:00:07,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:09,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:09,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:09,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:09,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:09,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:09,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:00:09,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:09,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:09,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:09,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:09,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:09,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:09,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 04:00:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:09,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:09,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:09,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:00:09,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:09,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:00:09,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:09,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:09,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:09,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:00:09,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:09,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:09,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 2 proven. 1681 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:00:09,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728000076] [2020-10-29 04:00:09,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:09,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-29 04:00:09,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644194910] [2020-10-29 04:00:09,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-29 04:00:09,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:09,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-29 04:00:09,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 04:00:09,278 INFO L87 Difference]: Start difference. First operand 311 states and 353 transitions. Second operand 45 states. [2020-10-29 04:00:10,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:10,703 INFO L93 Difference]: Finished difference Result 542 states and 628 transitions. [2020-10-29 04:00:10,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-29 04:00:10,703 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 106 [2020-10-29 04:00:10,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:10,706 INFO L225 Difference]: With dead ends: 542 [2020-10-29 04:00:10,706 INFO L226 Difference]: Without dead ends: 320 [2020-10-29 04:00:10,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 04:00:10,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-29 04:00:10,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 318. [2020-10-29 04:00:10,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-10-29 04:00:10,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 361 transitions. [2020-10-29 04:00:10,718 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 361 transitions. Word has length 106 [2020-10-29 04:00:10,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:10,718 INFO L481 AbstractCegarLoop]: Abstraction has 318 states and 361 transitions. [2020-10-29 04:00:10,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-29 04:00:10,718 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 361 transitions. [2020-10-29 04:00:10,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 04:00:10,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:10,719 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:00:10,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-29 04:00:10,719 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:10,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:10,720 INFO L82 PathProgramCache]: Analyzing trace with hash 499102411, now seen corresponding path program 42 times [2020-10-29 04:00:10,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:10,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685405762] [2020-10-29 04:00:10,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:10,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:11,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:11,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 04:00:11,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:11,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 899 [2020-10-29 04:00:11,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:11,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-29 04:00:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:00:11,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 04:00:11,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:13,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:13,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:13,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:13,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:13,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:13,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:00:13,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:13,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:13,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:13,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:13,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:13,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:13,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-29 04:00:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:13,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:13,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:13,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:00:13,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:13,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:00:13,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:13,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:13,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:13,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:00:13,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:13,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1768 backedges. 2 proven. 1764 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:00:13,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685405762] [2020-10-29 04:00:13,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:13,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-29 04:00:13,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133164022] [2020-10-29 04:00:13,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-29 04:00:13,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:13,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-29 04:00:13,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 04:00:13,072 INFO L87 Difference]: Start difference. First operand 318 states and 361 transitions. Second operand 46 states. [2020-10-29 04:00:14,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:14,806 INFO L93 Difference]: Finished difference Result 554 states and 642 transitions. [2020-10-29 04:00:14,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-29 04:00:14,807 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 108 [2020-10-29 04:00:14,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:14,809 INFO L225 Difference]: With dead ends: 554 [2020-10-29 04:00:14,809 INFO L226 Difference]: Without dead ends: 327 [2020-10-29 04:00:14,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 04:00:14,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-29 04:00:14,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 325. [2020-10-29 04:00:14,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-10-29 04:00:14,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 369 transitions. [2020-10-29 04:00:14,822 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 369 transitions. Word has length 108 [2020-10-29 04:00:14,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:14,822 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 369 transitions. [2020-10-29 04:00:14,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-29 04:00:14,822 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 369 transitions. [2020-10-29 04:00:14,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-29 04:00:14,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:14,823 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:00:14,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-29 04:00:14,823 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:14,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:14,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1409921389, now seen corresponding path program 43 times [2020-10-29 04:00:14,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:14,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777814965] [2020-10-29 04:00:14,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:14,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:15,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:15,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 04:00:15,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:15,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1107 [2020-10-29 04:00:15,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:15,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:15,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-29 04:00:15,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:00:15,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 04:00:15,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:17,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:17,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:17,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:17,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:17,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:17,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:00:17,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:17,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:17,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:17,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:17,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:17,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:17,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 04:00:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:17,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:17,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:17,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:00:17,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:17,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:00:17,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:17,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:17,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:17,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:00:17,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:17,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:17,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1853 backedges. 2 proven. 1849 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:00:17,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777814965] [2020-10-29 04:00:17,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:17,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-29 04:00:17,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866411626] [2020-10-29 04:00:17,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-29 04:00:17,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:17,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-29 04:00:17,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 04:00:17,448 INFO L87 Difference]: Start difference. First operand 325 states and 369 transitions. Second operand 47 states. [2020-10-29 04:00:18,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:18,776 INFO L93 Difference]: Finished difference Result 566 states and 656 transitions. [2020-10-29 04:00:18,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-29 04:00:18,776 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 110 [2020-10-29 04:00:18,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:18,779 INFO L225 Difference]: With dead ends: 566 [2020-10-29 04:00:18,779 INFO L226 Difference]: Without dead ends: 334 [2020-10-29 04:00:18,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 04:00:18,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-29 04:00:18,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 332. [2020-10-29 04:00:18,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-10-29 04:00:18,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 377 transitions. [2020-10-29 04:00:18,791 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 377 transitions. Word has length 110 [2020-10-29 04:00:18,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:18,791 INFO L481 AbstractCegarLoop]: Abstraction has 332 states and 377 transitions. [2020-10-29 04:00:18,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-29 04:00:18,792 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 377 transitions. [2020-10-29 04:00:18,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 04:00:18,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:18,792 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:00:18,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-29 04:00:18,793 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:18,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:18,793 INFO L82 PathProgramCache]: Analyzing trace with hash 533630863, now seen corresponding path program 44 times [2020-10-29 04:00:18,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:18,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677891737] [2020-10-29 04:00:18,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:18,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:19,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:19,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 04:00:19,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:19,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 968 [2020-10-29 04:00:19,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:19,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:19,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-29 04:00:19,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:00:19,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 04:00:19,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:21,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:21,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:21,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:21,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:21,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:21,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:00:21,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:21,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:21,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:21,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:21,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:21,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:21,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 04:00:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:21,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:21,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:21,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:00:21,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:21,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:00:21,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:21,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:00:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:21,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 2 proven. 1936 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:00:21,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677891737] [2020-10-29 04:00:21,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:21,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-29 04:00:21,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419993213] [2020-10-29 04:00:21,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-29 04:00:21,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:21,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-29 04:00:21,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 04:00:21,339 INFO L87 Difference]: Start difference. First operand 332 states and 377 transitions. Second operand 48 states. [2020-10-29 04:00:22,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:22,816 INFO L93 Difference]: Finished difference Result 578 states and 670 transitions. [2020-10-29 04:00:22,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-29 04:00:22,817 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 112 [2020-10-29 04:00:22,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:22,819 INFO L225 Difference]: With dead ends: 578 [2020-10-29 04:00:22,820 INFO L226 Difference]: Without dead ends: 341 [2020-10-29 04:00:22,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 04:00:22,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-29 04:00:22,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 339. [2020-10-29 04:00:22,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-10-29 04:00:22,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 385 transitions. [2020-10-29 04:00:22,833 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 385 transitions. Word has length 112 [2020-10-29 04:00:22,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:22,833 INFO L481 AbstractCegarLoop]: Abstraction has 339 states and 385 transitions. [2020-10-29 04:00:22,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-29 04:00:22,833 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 385 transitions. [2020-10-29 04:00:22,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 04:00:22,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:22,834 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:00:22,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-29 04:00:22,834 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:22,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:22,835 INFO L82 PathProgramCache]: Analyzing trace with hash 232025393, now seen corresponding path program 45 times [2020-10-29 04:00:22,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:22,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378089317] [2020-10-29 04:00:22,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:22,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:23,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:23,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 04:00:23,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:23,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1069 [2020-10-29 04:00:23,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:23,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-29 04:00:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:00:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 04:00:23,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:25,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:25,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:25,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:25,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:25,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:25,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:00:25,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:25,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:25,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:25,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:25,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:25,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:25,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 04:00:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:25,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:25,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:25,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:00:25,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:25,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:00:25,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:25,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:25,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:25,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:00:25,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:25,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:25,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2029 backedges. 2 proven. 2025 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:00:25,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378089317] [2020-10-29 04:00:25,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:25,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-29 04:00:25,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175269277] [2020-10-29 04:00:25,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-29 04:00:25,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:25,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-29 04:00:25,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 04:00:25,573 INFO L87 Difference]: Start difference. First operand 339 states and 385 transitions. Second operand 49 states. [2020-10-29 04:00:26,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:26,986 INFO L93 Difference]: Finished difference Result 590 states and 684 transitions. [2020-10-29 04:00:26,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-29 04:00:26,987 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 114 [2020-10-29 04:00:26,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:26,990 INFO L225 Difference]: With dead ends: 590 [2020-10-29 04:00:26,990 INFO L226 Difference]: Without dead ends: 348 [2020-10-29 04:00:26,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 04:00:26,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-29 04:00:26,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 346. [2020-10-29 04:00:26,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-29 04:00:27,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 393 transitions. [2020-10-29 04:00:27,000 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 393 transitions. Word has length 114 [2020-10-29 04:00:27,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:27,001 INFO L481 AbstractCegarLoop]: Abstraction has 346 states and 393 transitions. [2020-10-29 04:00:27,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-29 04:00:27,001 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 393 transitions. [2020-10-29 04:00:27,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 04:00:27,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:27,002 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:00:27,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-29 04:00:27,002 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:27,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:27,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1848022445, now seen corresponding path program 46 times [2020-10-29 04:00:27,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:27,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276292163] [2020-10-29 04:00:27,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:27,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:28,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:28,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 04:00:28,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:28,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-10-29 04:00:28,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:28,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:28,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-29 04:00:28,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:00:28,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 04:00:28,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:29,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:29,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:29,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:29,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:29,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:29,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:00:29,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:29,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:29,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:29,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:29,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:29,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:29,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 04:00:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:29,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:29,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:29,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:00:29,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:29,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:00:29,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:29,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:29,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:29,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:00:29,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:29,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2120 backedges. 2 proven. 2116 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:00:29,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276292163] [2020-10-29 04:00:29,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:29,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-29 04:00:29,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129616879] [2020-10-29 04:00:29,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-29 04:00:29,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:29,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-29 04:00:29,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 04:00:29,752 INFO L87 Difference]: Start difference. First operand 346 states and 393 transitions. Second operand 50 states. [2020-10-29 04:00:31,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:31,481 INFO L93 Difference]: Finished difference Result 602 states and 698 transitions. [2020-10-29 04:00:31,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-29 04:00:31,481 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 116 [2020-10-29 04:00:31,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:31,484 INFO L225 Difference]: With dead ends: 602 [2020-10-29 04:00:31,484 INFO L226 Difference]: Without dead ends: 355 [2020-10-29 04:00:31,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 04:00:31,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-10-29 04:00:31,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 353. [2020-10-29 04:00:31,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-10-29 04:00:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 401 transitions. [2020-10-29 04:00:31,496 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 401 transitions. Word has length 116 [2020-10-29 04:00:31,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:31,496 INFO L481 AbstractCegarLoop]: Abstraction has 353 states and 401 transitions. [2020-10-29 04:00:31,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-29 04:00:31,497 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 401 transitions. [2020-10-29 04:00:31,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 04:00:31,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:31,498 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:00:31,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-29 04:00:31,498 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:31,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:31,498 INFO L82 PathProgramCache]: Analyzing trace with hash 680765173, now seen corresponding path program 47 times [2020-10-29 04:00:31,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:31,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857176038] [2020-10-29 04:00:31,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:31,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:32,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:32,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 04:00:32,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:32,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1082 [2020-10-29 04:00:32,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:32,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:32,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-29 04:00:32,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:00:32,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 04:00:32,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:34,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:34,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:34,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:34,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:34,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:34,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:00:34,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:34,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:34,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:34,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:34,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:34,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:34,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 04:00:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:34,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:34,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:34,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:00:34,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:34,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:00:34,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:34,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:00:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:34,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:34,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2213 backedges. 2 proven. 2209 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:00:34,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857176038] [2020-10-29 04:00:34,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:34,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-29 04:00:34,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792634326] [2020-10-29 04:00:34,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-29 04:00:34,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:34,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-29 04:00:34,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 04:00:34,375 INFO L87 Difference]: Start difference. First operand 353 states and 401 transitions. Second operand 51 states. [2020-10-29 04:00:36,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:36,011 INFO L93 Difference]: Finished difference Result 614 states and 712 transitions. [2020-10-29 04:00:36,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-29 04:00:36,012 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 118 [2020-10-29 04:00:36,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:36,014 INFO L225 Difference]: With dead ends: 614 [2020-10-29 04:00:36,014 INFO L226 Difference]: Without dead ends: 362 [2020-10-29 04:00:36,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 04:00:36,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-29 04:00:36,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 360. [2020-10-29 04:00:36,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-10-29 04:00:36,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 409 transitions. [2020-10-29 04:00:36,027 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 409 transitions. Word has length 118 [2020-10-29 04:00:36,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:36,028 INFO L481 AbstractCegarLoop]: Abstraction has 360 states and 409 transitions. [2020-10-29 04:00:36,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-29 04:00:36,028 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 409 transitions. [2020-10-29 04:00:36,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 04:00:36,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:36,029 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:00:36,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-29 04:00:36,029 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:36,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:36,030 INFO L82 PathProgramCache]: Analyzing trace with hash -105823465, now seen corresponding path program 48 times [2020-10-29 04:00:36,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:36,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072502295] [2020-10-29 04:00:36,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:36,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:37,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:37,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 04:00:37,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:37,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1459 [2020-10-29 04:00:37,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:37,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:37,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-29 04:00:37,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:00:37,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 04:00:37,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:39,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:39,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:39,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:39,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:39,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:39,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:00:39,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:39,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:39,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:39,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:39,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:39,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:39,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-29 04:00:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:39,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:39,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:39,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:00:39,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:39,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:00:39,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:39,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:39,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:39,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:00:39,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:39,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2308 backedges. 2 proven. 2304 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:00:39,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072502295] [2020-10-29 04:00:39,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:39,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-29 04:00:39,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211591310] [2020-10-29 04:00:39,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-29 04:00:39,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:39,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-29 04:00:39,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 04:00:39,417 INFO L87 Difference]: Start difference. First operand 360 states and 409 transitions. Second operand 52 states. [2020-10-29 04:00:41,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:41,345 INFO L93 Difference]: Finished difference Result 626 states and 726 transitions. [2020-10-29 04:00:41,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-29 04:00:41,345 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 120 [2020-10-29 04:00:41,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:41,348 INFO L225 Difference]: With dead ends: 626 [2020-10-29 04:00:41,348 INFO L226 Difference]: Without dead ends: 369 [2020-10-29 04:00:41,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 04:00:41,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-10-29 04:00:41,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 367. [2020-10-29 04:00:41,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-10-29 04:00:41,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 417 transitions. [2020-10-29 04:00:41,359 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 417 transitions. Word has length 120 [2020-10-29 04:00:41,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:41,359 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 417 transitions. [2020-10-29 04:00:41,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-29 04:00:41,359 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 417 transitions. [2020-10-29 04:00:41,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 04:00:41,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:41,360 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:00:41,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-29 04:00:41,360 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:41,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:41,361 INFO L82 PathProgramCache]: Analyzing trace with hash -103260487, now seen corresponding path program 49 times [2020-10-29 04:00:41,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:41,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103678367] [2020-10-29 04:00:41,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:41,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:42,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:42,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 04:00:42,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:42,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1157 [2020-10-29 04:00:42,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:42,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:42,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-29 04:00:42,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:00:42,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 04:00:42,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:44,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:44,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:44,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:44,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:44,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:44,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:00:44,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:44,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:44,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:44,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:44,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:44,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:44,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-29 04:00:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:44,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:44,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:44,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:00:44,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:44,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:00:44,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:44,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:00:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:44,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:44,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2405 backedges. 2 proven. 2401 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:00:44,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103678367] [2020-10-29 04:00:44,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:44,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-29 04:00:44,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368352148] [2020-10-29 04:00:44,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-29 04:00:44,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:44,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-29 04:00:44,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 04:00:44,448 INFO L87 Difference]: Start difference. First operand 367 states and 417 transitions. Second operand 53 states. [2020-10-29 04:00:46,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:46,637 INFO L93 Difference]: Finished difference Result 638 states and 740 transitions. [2020-10-29 04:00:46,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-29 04:00:46,637 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 122 [2020-10-29 04:00:46,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:46,640 INFO L225 Difference]: With dead ends: 638 [2020-10-29 04:00:46,640 INFO L226 Difference]: Without dead ends: 376 [2020-10-29 04:00:46,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 04:00:46,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-10-29 04:00:46,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 374. [2020-10-29 04:00:46,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-10-29 04:00:46,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 425 transitions. [2020-10-29 04:00:46,654 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 425 transitions. Word has length 122 [2020-10-29 04:00:46,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:46,654 INFO L481 AbstractCegarLoop]: Abstraction has 374 states and 425 transitions. [2020-10-29 04:00:46,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-29 04:00:46,654 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 425 transitions. [2020-10-29 04:00:46,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 04:00:46,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:46,655 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:00:46,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-29 04:00:46,655 INFO L429 AbstractCegarLoop]: === Iteration 53 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:46,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:46,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1935205925, now seen corresponding path program 50 times [2020-10-29 04:00:46,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:46,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235165480] [2020-10-29 04:00:46,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:46,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:47,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:47,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 04:00:47,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:47,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1215 [2020-10-29 04:00:47,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:47,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:47,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-29 04:00:47,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:00:47,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 04:00:47,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:49,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:49,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:49,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:49,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:49,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:49,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:00:49,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:49,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:49,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:49,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:49,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:49,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:49,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-29 04:00:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:49,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:49,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:49,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:00:49,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:49,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:00:49,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:49,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:49,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:49,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:00:49,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:49,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:49,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2504 backedges. 2 proven. 2500 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:00:49,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235165480] [2020-10-29 04:00:49,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:49,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-29 04:00:49,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770788163] [2020-10-29 04:00:49,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-29 04:00:49,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:49,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-29 04:00:49,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-29 04:00:49,917 INFO L87 Difference]: Start difference. First operand 374 states and 425 transitions. Second operand 54 states. [2020-10-29 04:00:52,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:52,204 INFO L93 Difference]: Finished difference Result 650 states and 754 transitions. [2020-10-29 04:00:52,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-29 04:00:52,205 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 124 [2020-10-29 04:00:52,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:52,207 INFO L225 Difference]: With dead ends: 650 [2020-10-29 04:00:52,207 INFO L226 Difference]: Without dead ends: 383 [2020-10-29 04:00:52,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-29 04:00:52,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-10-29 04:00:52,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 381. [2020-10-29 04:00:52,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-29 04:00:52,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 433 transitions. [2020-10-29 04:00:52,219 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 433 transitions. Word has length 124 [2020-10-29 04:00:52,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:52,220 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 433 transitions. [2020-10-29 04:00:52,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-29 04:00:52,220 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 433 transitions. [2020-10-29 04:00:52,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 04:00:52,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:52,221 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:00:52,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-29 04:00:52,221 INFO L429 AbstractCegarLoop]: === Iteration 54 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:52,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:52,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1498180483, now seen corresponding path program 51 times [2020-10-29 04:00:52,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:52,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338781272] [2020-10-29 04:00:52,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:52,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:53,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:53,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 04:00:53,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:53,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1228 [2020-10-29 04:00:53,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:53,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-10-29 04:00:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:00:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 04:00:53,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:55,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:55,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:55,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:55,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:55,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:55,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:00:55,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:55,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:55,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:55,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:55,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:55,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:55,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 04:00:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:55,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:55,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:55,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:00:55,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:55,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:00:55,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:55,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:55,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:55,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:00:55,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:55,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:55,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2605 backedges. 2 proven. 2601 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:00:55,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338781272] [2020-10-29 04:00:55,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:55,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-29 04:00:55,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251558504] [2020-10-29 04:00:55,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-29 04:00:55,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:55,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-29 04:00:55,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 04:00:55,537 INFO L87 Difference]: Start difference. First operand 381 states and 433 transitions. Second operand 55 states. [2020-10-29 04:00:57,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:57,921 INFO L93 Difference]: Finished difference Result 662 states and 768 transitions. [2020-10-29 04:00:57,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-29 04:00:57,921 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 126 [2020-10-29 04:00:57,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:57,924 INFO L225 Difference]: With dead ends: 662 [2020-10-29 04:00:57,924 INFO L226 Difference]: Without dead ends: 390 [2020-10-29 04:00:57,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 04:00:57,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-10-29 04:00:57,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 388. [2020-10-29 04:00:57,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-10-29 04:00:57,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 441 transitions. [2020-10-29 04:00:57,937 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 441 transitions. Word has length 126 [2020-10-29 04:00:57,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:57,937 INFO L481 AbstractCegarLoop]: Abstraction has 388 states and 441 transitions. [2020-10-29 04:00:57,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-29 04:00:57,938 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 441 transitions. [2020-10-29 04:00:57,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 04:00:57,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:57,938 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:00:57,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-29 04:00:57,939 INFO L429 AbstractCegarLoop]: === Iteration 55 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:57,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:57,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1871441567, now seen corresponding path program 52 times [2020-10-29 04:00:57,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:57,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73388696] [2020-10-29 04:00:57,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:57,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:59,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:59,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 04:00:59,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:59,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1266 [2020-10-29 04:00:59,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:59,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:59,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-29 04:00:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:00:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 04:00:59,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:01,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:01,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:01,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:01,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:01,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:01,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:01:01,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:01,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:01,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:01,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-29 04:01:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:01,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:01,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:01,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:01:01,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:01,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:01:01,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:01,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:01:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:01,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2708 backedges. 2 proven. 2704 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:01:01,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73388696] [2020-10-29 04:01:01,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:01,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-29 04:01:01,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76070966] [2020-10-29 04:01:01,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-29 04:01:01,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:01,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-29 04:01:01,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 04:01:01,383 INFO L87 Difference]: Start difference. First operand 388 states and 441 transitions. Second operand 56 states. [2020-10-29 04:01:03,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:03,824 INFO L93 Difference]: Finished difference Result 674 states and 782 transitions. [2020-10-29 04:01:03,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-29 04:01:03,826 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 128 [2020-10-29 04:01:03,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:03,828 INFO L225 Difference]: With dead ends: 674 [2020-10-29 04:01:03,829 INFO L226 Difference]: Without dead ends: 397 [2020-10-29 04:01:03,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 04:01:03,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-10-29 04:01:03,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 395. [2020-10-29 04:01:03,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-10-29 04:01:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 449 transitions. [2020-10-29 04:01:03,841 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 449 transitions. Word has length 128 [2020-10-29 04:01:03,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:03,841 INFO L481 AbstractCegarLoop]: Abstraction has 395 states and 449 transitions. [2020-10-29 04:01:03,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-29 04:01:03,841 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 449 transitions. [2020-10-29 04:01:03,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 04:01:03,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:03,842 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:03,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-29 04:01:03,843 INFO L429 AbstractCegarLoop]: === Iteration 56 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:03,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:03,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1672890433, now seen corresponding path program 53 times [2020-10-29 04:01:03,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:03,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980436988] [2020-10-29 04:01:03,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:03,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:05,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:05,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 04:01:05,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:05,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1327 [2020-10-29 04:01:05,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:05,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:05,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-29 04:01:05,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:01:05,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 04:01:05,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:07,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:07,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:07,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:07,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:07,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:07,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:01:07,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:07,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:07,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:07,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:07,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:07,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:07,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-29 04:01:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:07,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:07,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:07,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:01:07,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:07,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:01:07,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:07,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:07,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:07,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:01:07,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:07,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:07,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2813 backedges. 2 proven. 2809 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:01:07,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980436988] [2020-10-29 04:01:07,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:07,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-29 04:01:07,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494482486] [2020-10-29 04:01:07,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-29 04:01:07,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:07,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-29 04:01:07,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 04:01:07,445 INFO L87 Difference]: Start difference. First operand 395 states and 449 transitions. Second operand 57 states. [2020-10-29 04:01:10,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:10,029 INFO L93 Difference]: Finished difference Result 686 states and 796 transitions. [2020-10-29 04:01:10,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-29 04:01:10,029 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 130 [2020-10-29 04:01:10,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:10,031 INFO L225 Difference]: With dead ends: 686 [2020-10-29 04:01:10,032 INFO L226 Difference]: Without dead ends: 404 [2020-10-29 04:01:10,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 04:01:10,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-10-29 04:01:10,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 402. [2020-10-29 04:01:10,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-10-29 04:01:10,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 457 transitions. [2020-10-29 04:01:10,044 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 457 transitions. Word has length 130 [2020-10-29 04:01:10,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:10,044 INFO L481 AbstractCegarLoop]: Abstraction has 402 states and 457 transitions. [2020-10-29 04:01:10,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-29 04:01:10,045 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 457 transitions. [2020-10-29 04:01:10,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-29 04:01:10,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:10,046 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:10,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-29 04:01:10,046 INFO L429 AbstractCegarLoop]: === Iteration 57 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:10,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:10,046 INFO L82 PathProgramCache]: Analyzing trace with hash -156188317, now seen corresponding path program 54 times [2020-10-29 04:01:10,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:10,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136029417] [2020-10-29 04:01:10,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:10,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:11,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:11,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 04:01:11,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:11,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1505 [2020-10-29 04:01:11,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:11,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:11,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 56 [2020-10-29 04:01:11,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:01:11,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 04:01:11,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:13,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:13,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:13,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:13,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:13,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:13,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:01:13,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:13,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:13,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:13,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:13,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:13,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:13,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 04:01:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:13,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:13,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:13,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:01:13,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:13,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:01:13,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:13,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:13,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:13,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:01:13,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:13,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:13,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2920 backedges. 2 proven. 2916 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:01:13,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136029417] [2020-10-29 04:01:13,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:13,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-29 04:01:13,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308807392] [2020-10-29 04:01:13,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-29 04:01:13,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:13,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-29 04:01:13,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-29 04:01:13,951 INFO L87 Difference]: Start difference. First operand 402 states and 457 transitions. Second operand 58 states. [2020-10-29 04:01:16,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:16,603 INFO L93 Difference]: Finished difference Result 698 states and 810 transitions. [2020-10-29 04:01:16,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-29 04:01:16,604 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 132 [2020-10-29 04:01:16,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:16,606 INFO L225 Difference]: With dead ends: 698 [2020-10-29 04:01:16,606 INFO L226 Difference]: Without dead ends: 411 [2020-10-29 04:01:16,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-29 04:01:16,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-10-29 04:01:16,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 409. [2020-10-29 04:01:16,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-10-29 04:01:16,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 465 transitions. [2020-10-29 04:01:16,619 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 465 transitions. Word has length 132 [2020-10-29 04:01:16,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:16,619 INFO L481 AbstractCegarLoop]: Abstraction has 409 states and 465 transitions. [2020-10-29 04:01:16,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-29 04:01:16,619 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 465 transitions. [2020-10-29 04:01:16,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 04:01:16,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:16,620 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:16,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-29 04:01:16,621 INFO L429 AbstractCegarLoop]: === Iteration 58 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:16,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:16,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1259243003, now seen corresponding path program 55 times [2020-10-29 04:01:16,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:16,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695968840] [2020-10-29 04:01:16,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:16,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:18,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:18,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 04:01:18,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:18,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1516 [2020-10-29 04:01:18,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:18,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 57 [2020-10-29 04:01:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:01:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 04:01:18,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:20,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:20,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:20,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:20,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:20,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:20,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:01:20,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:20,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:20,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:20,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:20,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:20,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:20,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 04:01:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:20,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:20,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:20,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:01:20,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:20,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:01:20,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:20,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:20,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:20,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:01:20,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:20,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:20,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3029 backedges. 2 proven. 3025 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:01:20,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695968840] [2020-10-29 04:01:20,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:20,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-10-29 04:01:20,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222512274] [2020-10-29 04:01:20,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-29 04:01:20,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:20,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-29 04:01:20,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 04:01:20,580 INFO L87 Difference]: Start difference. First operand 409 states and 465 transitions. Second operand 59 states. [2020-10-29 04:01:23,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:23,006 INFO L93 Difference]: Finished difference Result 710 states and 824 transitions. [2020-10-29 04:01:23,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-29 04:01:23,006 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 134 [2020-10-29 04:01:23,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:23,008 INFO L225 Difference]: With dead ends: 710 [2020-10-29 04:01:23,008 INFO L226 Difference]: Without dead ends: 418 [2020-10-29 04:01:23,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 04:01:23,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-10-29 04:01:23,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 416. [2020-10-29 04:01:23,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-10-29 04:01:23,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 473 transitions. [2020-10-29 04:01:23,020 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 473 transitions. Word has length 134 [2020-10-29 04:01:23,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:23,020 INFO L481 AbstractCegarLoop]: Abstraction has 416 states and 473 transitions. [2020-10-29 04:01:23,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-10-29 04:01:23,020 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 473 transitions. [2020-10-29 04:01:23,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-29 04:01:23,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:23,021 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:23,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-29 04:01:23,022 INFO L429 AbstractCegarLoop]: === Iteration 59 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:23,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:23,022 INFO L82 PathProgramCache]: Analyzing trace with hash -437874137, now seen corresponding path program 56 times [2020-10-29 04:01:23,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:23,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067952574] [2020-10-29 04:01:23,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:23,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:24,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:24,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 04:01:24,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:24,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1675 [2020-10-29 04:01:24,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:24,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:24,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-10-29 04:01:24,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:01:24,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 04:01:24,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:27,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:27,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:27,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:27,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:27,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:27,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:01:27,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:27,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:27,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:27,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-29 04:01:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:27,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:27,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:27,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:01:27,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:27,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:01:27,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:27,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:01:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:27,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:27,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3140 backedges. 2 proven. 3136 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:01:27,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067952574] [2020-10-29 04:01:27,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:27,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-10-29 04:01:27,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748334691] [2020-10-29 04:01:27,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-29 04:01:27,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:27,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-29 04:01:27,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2020-10-29 04:01:27,231 INFO L87 Difference]: Start difference. First operand 416 states and 473 transitions. Second operand 60 states. [2020-10-29 04:01:29,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:29,821 INFO L93 Difference]: Finished difference Result 722 states and 838 transitions. [2020-10-29 04:01:29,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-29 04:01:29,822 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 136 [2020-10-29 04:01:29,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:29,825 INFO L225 Difference]: With dead ends: 722 [2020-10-29 04:01:29,825 INFO L226 Difference]: Without dead ends: 425 [2020-10-29 04:01:29,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2020-10-29 04:01:29,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-10-29 04:01:29,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 423. [2020-10-29 04:01:29,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-10-29 04:01:29,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 481 transitions. [2020-10-29 04:01:29,838 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 481 transitions. Word has length 136 [2020-10-29 04:01:29,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:29,838 INFO L481 AbstractCegarLoop]: Abstraction has 423 states and 481 transitions. [2020-10-29 04:01:29,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-29 04:01:29,838 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 481 transitions. [2020-10-29 04:01:29,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-29 04:01:29,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:29,839 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:29,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-29 04:01:29,840 INFO L429 AbstractCegarLoop]: === Iteration 60 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:29,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:29,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1376376375, now seen corresponding path program 57 times [2020-10-29 04:01:29,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:29,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821378121] [2020-10-29 04:01:29,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:29,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:31,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:31,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 04:01:31,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:31,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1744 [2020-10-29 04:01:31,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:31,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 59 [2020-10-29 04:01:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:01:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 04:01:31,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:34,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:34,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:34,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:34,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:34,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:34,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:01:34,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:34,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:34,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:34,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:34,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:34,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:34,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 04:01:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:34,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:34,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:34,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:01:34,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:34,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:01:34,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:34,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:01:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:34,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3253 backedges. 2 proven. 3249 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:01:34,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821378121] [2020-10-29 04:01:34,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:34,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-10-29 04:01:34,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758687089] [2020-10-29 04:01:34,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-10-29 04:01:34,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:34,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-10-29 04:01:34,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2020-10-29 04:01:34,288 INFO L87 Difference]: Start difference. First operand 423 states and 481 transitions. Second operand 61 states. [2020-10-29 04:01:37,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:37,227 INFO L93 Difference]: Finished difference Result 734 states and 852 transitions. [2020-10-29 04:01:37,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-29 04:01:37,228 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 138 [2020-10-29 04:01:37,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:37,231 INFO L225 Difference]: With dead ends: 734 [2020-10-29 04:01:37,231 INFO L226 Difference]: Without dead ends: 432 [2020-10-29 04:01:37,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2020-10-29 04:01:37,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-29 04:01:37,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 430. [2020-10-29 04:01:37,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-29 04:01:37,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 489 transitions. [2020-10-29 04:01:37,245 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 489 transitions. Word has length 138 [2020-10-29 04:01:37,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:37,246 INFO L481 AbstractCegarLoop]: Abstraction has 430 states and 489 transitions. [2020-10-29 04:01:37,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-10-29 04:01:37,246 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 489 transitions. [2020-10-29 04:01:37,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-29 04:01:37,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:37,247 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:37,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-29 04:01:37,247 INFO L429 AbstractCegarLoop]: === Iteration 61 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:37,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:37,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1333894933, now seen corresponding path program 58 times [2020-10-29 04:01:37,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:37,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168213325] [2020-10-29 04:01:37,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:37,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:39,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:39,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 04:01:39,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:39,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1742 [2020-10-29 04:01:39,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:39,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:39,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 60 [2020-10-29 04:01:39,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:01:39,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 04:01:39,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:41,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:41,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:41,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:41,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:41,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:41,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:01:41,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:41,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:41,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:41,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-29 04:01:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:41,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:41,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:41,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:01:41,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:41,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:01:41,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:41,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:41,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:41,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:01:41,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:41,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:41,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3368 backedges. 2 proven. 3364 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:01:41,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168213325] [2020-10-29 04:01:41,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:41,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-10-29 04:01:41,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213517224] [2020-10-29 04:01:41,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-10-29 04:01:41,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:41,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-10-29 04:01:41,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2020-10-29 04:01:41,747 INFO L87 Difference]: Start difference. First operand 430 states and 489 transitions. Second operand 62 states. [2020-10-29 04:01:44,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:44,100 INFO L93 Difference]: Finished difference Result 746 states and 866 transitions. [2020-10-29 04:01:44,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-29 04:01:44,101 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 140 [2020-10-29 04:01:44,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:44,104 INFO L225 Difference]: With dead ends: 746 [2020-10-29 04:01:44,104 INFO L226 Difference]: Without dead ends: 439 [2020-10-29 04:01:44,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2020-10-29 04:01:44,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-10-29 04:01:44,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 437. [2020-10-29 04:01:44,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-29 04:01:44,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 497 transitions. [2020-10-29 04:01:44,115 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 497 transitions. Word has length 140 [2020-10-29 04:01:44,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:44,115 INFO L481 AbstractCegarLoop]: Abstraction has 437 states and 497 transitions. [2020-10-29 04:01:44,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-10-29 04:01:44,115 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 497 transitions. [2020-10-29 04:01:44,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-29 04:01:44,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:44,116 INFO L422 BasicCegarLoop]: trace histogram [59, 59, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:44,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-29 04:01:44,116 INFO L429 AbstractCegarLoop]: === Iteration 62 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:44,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:44,116 INFO L82 PathProgramCache]: Analyzing trace with hash 836065165, now seen corresponding path program 59 times [2020-10-29 04:01:44,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:44,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697412008] [2020-10-29 04:01:44,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:44,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:45,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:45,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 04:01:45,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:45,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1853 [2020-10-29 04:01:45,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:45,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 61 [2020-10-29 04:01:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:01:45,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 04:01:45,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:48,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:48,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:48,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:48,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:48,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:01:48,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:48,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:48,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 04:01:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:48,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:48,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:48,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:01:48,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:48,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:01:48,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:48,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:48,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:48,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:01:48,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:48,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:48,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3485 backedges. 2 proven. 3481 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:01:48,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697412008] [2020-10-29 04:01:48,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:48,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-10-29 04:01:48,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997332337] [2020-10-29 04:01:48,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-29 04:01:48,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:48,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-29 04:01:48,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2020-10-29 04:01:48,878 INFO L87 Difference]: Start difference. First operand 437 states and 497 transitions. Second operand 63 states. [2020-10-29 04:01:51,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:51,992 INFO L93 Difference]: Finished difference Result 758 states and 880 transitions. [2020-10-29 04:01:51,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-29 04:01:51,992 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 142 [2020-10-29 04:01:51,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:51,994 INFO L225 Difference]: With dead ends: 758 [2020-10-29 04:01:51,994 INFO L226 Difference]: Without dead ends: 446 [2020-10-29 04:01:51,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2020-10-29 04:01:51,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-10-29 04:01:52,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 444. [2020-10-29 04:01:52,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-10-29 04:01:52,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 505 transitions. [2020-10-29 04:01:52,005 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 505 transitions. Word has length 142 [2020-10-29 04:01:52,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:52,006 INFO L481 AbstractCegarLoop]: Abstraction has 444 states and 505 transitions. [2020-10-29 04:01:52,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-29 04:01:52,006 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 505 transitions. [2020-10-29 04:01:52,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-29 04:01:52,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:52,007 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:52,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-29 04:01:52,007 INFO L429 AbstractCegarLoop]: === Iteration 63 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:52,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:52,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1186386513, now seen corresponding path program 60 times [2020-10-29 04:01:52,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:52,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838635011] [2020-10-29 04:01:52,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:52,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:53,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:53,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 04:01:53,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:53,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1946 [2020-10-29 04:01:53,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:53,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 62 [2020-10-29 04:01:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:01:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 04:01:53,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:56,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:56,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:56,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:56,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:56,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:56,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:01:56,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:56,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:56,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:56,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:56,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:56,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:56,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-29 04:01:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:56,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:56,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:56,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:01:56,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:56,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:01:56,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:56,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:56,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:56,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:01:56,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:56,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:56,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3604 backedges. 2 proven. 3600 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:01:56,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838635011] [2020-10-29 04:01:56,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:56,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-10-29 04:01:56,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498148956] [2020-10-29 04:01:56,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-29 04:01:56,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:56,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-29 04:01:56,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2020-10-29 04:01:56,929 INFO L87 Difference]: Start difference. First operand 444 states and 505 transitions. Second operand 64 states. [2020-10-29 04:02:00,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:00,217 INFO L93 Difference]: Finished difference Result 770 states and 894 transitions. [2020-10-29 04:02:00,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-29 04:02:00,218 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 144 [2020-10-29 04:02:00,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:00,220 INFO L225 Difference]: With dead ends: 770 [2020-10-29 04:02:00,220 INFO L226 Difference]: Without dead ends: 453 [2020-10-29 04:02:00,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2020-10-29 04:02:00,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-10-29 04:02:00,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 451. [2020-10-29 04:02:00,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2020-10-29 04:02:00,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 513 transitions. [2020-10-29 04:02:00,233 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 513 transitions. Word has length 144 [2020-10-29 04:02:00,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:00,233 INFO L481 AbstractCegarLoop]: Abstraction has 451 states and 513 transitions. [2020-10-29 04:02:00,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-10-29 04:02:00,233 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 513 transitions. [2020-10-29 04:02:00,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-29 04:02:00,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:00,234 INFO L422 BasicCegarLoop]: trace histogram [61, 61, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:00,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-29 04:02:00,235 INFO L429 AbstractCegarLoop]: === Iteration 64 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:00,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:00,235 INFO L82 PathProgramCache]: Analyzing trace with hash 857736017, now seen corresponding path program 61 times [2020-10-29 04:02:00,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:00,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914754378] [2020-10-29 04:02:00,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:00,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:02,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:02,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 04:02:02,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:02,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2009 [2020-10-29 04:02:02,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:02,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 63 [2020-10-29 04:02:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:02:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 04:02:02,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:05,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:05,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:05,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:05,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:05,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:05,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:02:05,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:05,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:05,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:05,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:05,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:05,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:05,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 04:02:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:05,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:05,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:05,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:02:05,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:05,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:02:05,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:05,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:02:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:05,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:05,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3725 backedges. 2 proven. 3721 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:02:05,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914754378] [2020-10-29 04:02:05,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:05,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2020-10-29 04:02:05,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99107199] [2020-10-29 04:02:05,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-10-29 04:02:05,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:05,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-10-29 04:02:05,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2020-10-29 04:02:05,441 INFO L87 Difference]: Start difference. First operand 451 states and 513 transitions. Second operand 65 states. [2020-10-29 04:02:08,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:08,927 INFO L93 Difference]: Finished difference Result 782 states and 908 transitions. [2020-10-29 04:02:08,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-29 04:02:08,928 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 146 [2020-10-29 04:02:08,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:08,931 INFO L225 Difference]: With dead ends: 782 [2020-10-29 04:02:08,931 INFO L226 Difference]: Without dead ends: 460 [2020-10-29 04:02:08,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2020-10-29 04:02:08,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-29 04:02:08,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 458. [2020-10-29 04:02:08,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2020-10-29 04:02:08,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 521 transitions. [2020-10-29 04:02:08,944 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 521 transitions. Word has length 146 [2020-10-29 04:02:08,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:08,945 INFO L481 AbstractCegarLoop]: Abstraction has 458 states and 521 transitions. [2020-10-29 04:02:08,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-10-29 04:02:08,945 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 521 transitions. [2020-10-29 04:02:08,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 04:02:08,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:08,947 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:08,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-29 04:02:08,947 INFO L429 AbstractCegarLoop]: === Iteration 65 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:08,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:08,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1835534221, now seen corresponding path program 62 times [2020-10-29 04:02:08,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:08,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416766696] [2020-10-29 04:02:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:09,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:11,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:11,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 04:02:11,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:11,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2214 [2020-10-29 04:02:11,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:11,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:11,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 64 [2020-10-29 04:02:11,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:02:11,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 04:02:11,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:14,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:14,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:14,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:14,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:14,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:14,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:02:14,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:14,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:14,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:14,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-29 04:02:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:14,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:14,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:14,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:02:14,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:14,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:02:14,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:14,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:14,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:14,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:02:14,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:14,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:14,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3848 backedges. 2 proven. 3844 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:02:14,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416766696] [2020-10-29 04:02:14,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:14,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2020-10-29 04:02:14,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302296462] [2020-10-29 04:02:14,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-10-29 04:02:14,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:14,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-10-29 04:02:14,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2020-10-29 04:02:14,495 INFO L87 Difference]: Start difference. First operand 458 states and 521 transitions. Second operand 66 states. [2020-10-29 04:02:17,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:17,166 INFO L93 Difference]: Finished difference Result 794 states and 922 transitions. [2020-10-29 04:02:17,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-10-29 04:02:17,167 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 148 [2020-10-29 04:02:17,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:17,170 INFO L225 Difference]: With dead ends: 794 [2020-10-29 04:02:17,170 INFO L226 Difference]: Without dead ends: 467 [2020-10-29 04:02:17,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2020-10-29 04:02:17,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-10-29 04:02:17,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 465. [2020-10-29 04:02:17,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-10-29 04:02:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 529 transitions. [2020-10-29 04:02:17,182 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 529 transitions. Word has length 148 [2020-10-29 04:02:17,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:17,183 INFO L481 AbstractCegarLoop]: Abstraction has 465 states and 529 transitions. [2020-10-29 04:02:17,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-10-29 04:02:17,183 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 529 transitions. [2020-10-29 04:02:17,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-29 04:02:17,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:17,184 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:17,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-29 04:02:17,184 INFO L429 AbstractCegarLoop]: === Iteration 66 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:17,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:17,185 INFO L82 PathProgramCache]: Analyzing trace with hash -202953451, now seen corresponding path program 63 times [2020-10-29 04:02:17,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:17,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655444500] [2020-10-29 04:02:17,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:17,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:19,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:19,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 04:02:19,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:19,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2499 [2020-10-29 04:02:19,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:19,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:19,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 65 [2020-10-29 04:02:19,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:02:19,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 04:02:19,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:23,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:23,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:23,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:23,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:23,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:23,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:02:23,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:23,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:23,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:23,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:23,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:23,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:23,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 04:02:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:23,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:23,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:23,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:02:23,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:23,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:02:23,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:23,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:23,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:23,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:02:23,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:23,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:23,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3973 backedges. 2 proven. 3969 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:02:23,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655444500] [2020-10-29 04:02:23,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:23,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2020-10-29 04:02:23,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560134845] [2020-10-29 04:02:23,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-10-29 04:02:23,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:23,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-10-29 04:02:23,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2020-10-29 04:02:23,060 INFO L87 Difference]: Start difference. First operand 465 states and 529 transitions. Second operand 67 states. [2020-10-29 04:02:26,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:26,827 INFO L93 Difference]: Finished difference Result 806 states and 936 transitions. [2020-10-29 04:02:26,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-29 04:02:26,827 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 150 [2020-10-29 04:02:26,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:26,830 INFO L225 Difference]: With dead ends: 806 [2020-10-29 04:02:26,830 INFO L226 Difference]: Without dead ends: 474 [2020-10-29 04:02:26,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2020-10-29 04:02:26,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2020-10-29 04:02:26,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 472. [2020-10-29 04:02:26,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-10-29 04:02:26,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 537 transitions. [2020-10-29 04:02:26,844 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 537 transitions. Word has length 150 [2020-10-29 04:02:26,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:26,844 INFO L481 AbstractCegarLoop]: Abstraction has 472 states and 537 transitions. [2020-10-29 04:02:26,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-10-29 04:02:26,844 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 537 transitions. [2020-10-29 04:02:26,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-29 04:02:26,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:26,845 INFO L422 BasicCegarLoop]: trace histogram [64, 64, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:26,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-29 04:02:26,846 INFO L429 AbstractCegarLoop]: === Iteration 67 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:26,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:26,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1044103479, now seen corresponding path program 64 times [2020-10-29 04:02:26,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:26,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674415755] [2020-10-29 04:02:26,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:26,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:29,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:29,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 04:02:29,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:29,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2472 [2020-10-29 04:02:29,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:29,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:29,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 66 [2020-10-29 04:02:29,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:02:29,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 04:02:29,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:32,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:32,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:32,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:32,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:32,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:32,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:02:32,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:32,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:32,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:32,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 04:02:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:32,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:32,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:32,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:02:32,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:32,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:02:32,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:32,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:32,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:32,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:02:32,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:32,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:32,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4100 backedges. 2 proven. 4096 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:02:32,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674415755] [2020-10-29 04:02:32,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:32,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-10-29 04:02:32,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657703199] [2020-10-29 04:02:32,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-10-29 04:02:32,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:32,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-10-29 04:02:32,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2020-10-29 04:02:32,780 INFO L87 Difference]: Start difference. First operand 472 states and 537 transitions. Second operand 68 states. [2020-10-29 04:02:36,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:36,485 INFO L93 Difference]: Finished difference Result 818 states and 950 transitions. [2020-10-29 04:02:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-29 04:02:36,486 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 152 [2020-10-29 04:02:36,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:36,488 INFO L225 Difference]: With dead ends: 818 [2020-10-29 04:02:36,488 INFO L226 Difference]: Without dead ends: 481 [2020-10-29 04:02:36,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2020-10-29 04:02:36,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-29 04:02:36,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 479. [2020-10-29 04:02:36,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-10-29 04:02:36,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 545 transitions. [2020-10-29 04:02:36,500 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 545 transitions. Word has length 152 [2020-10-29 04:02:36,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:36,500 INFO L481 AbstractCegarLoop]: Abstraction has 479 states and 545 transitions. [2020-10-29 04:02:36,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-10-29 04:02:36,500 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 545 transitions. [2020-10-29 04:02:36,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 04:02:36,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:36,501 INFO L422 BasicCegarLoop]: trace histogram [65, 65, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:36,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-29 04:02:36,502 INFO L429 AbstractCegarLoop]: === Iteration 68 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:36,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:36,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1169937625, now seen corresponding path program 65 times [2020-10-29 04:02:36,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:36,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132365362] [2020-10-29 04:02:36,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:36,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:38,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:38,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 04:02:38,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:38,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2368 [2020-10-29 04:02:38,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:38,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 67 [2020-10-29 04:02:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:02:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 04:02:38,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:42,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:42,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:42,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:42,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:42,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:42,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:02:42,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:42,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:42,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:42,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:42,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:42,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:42,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 04:02:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:42,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:42,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:42,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:02:42,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:42,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:02:42,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:42,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:02:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:42,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4229 backedges. 2 proven. 4225 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:02:42,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132365362] [2020-10-29 04:02:42,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:42,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2020-10-29 04:02:42,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535587065] [2020-10-29 04:02:42,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-10-29 04:02:42,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:42,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-10-29 04:02:42,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2020-10-29 04:02:42,524 INFO L87 Difference]: Start difference. First operand 479 states and 545 transitions. Second operand 69 states.