/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-crafted/xor3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:22:54,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:22:54,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:22:54,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:22:54,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:22:54,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:22:54,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:22:54,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:22:54,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:22:54,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:22:54,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:22:54,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:22:54,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:22:54,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:22:54,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:22:54,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:22:54,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:22:54,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:22:54,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:22:54,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:22:54,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:22:54,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:22:54,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:22:54,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:22:54,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:22:54,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:22:54,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:22:54,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:22:54,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:22:54,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:22:54,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:22:54,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:22:54,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:22:54,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:22:54,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:22:54,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:22:54,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:22:54,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:22:54,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:22:54,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:22:54,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:22:54,815 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 03:22:54,868 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:22:54,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:22:54,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:22:54,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:22:54,873 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:22:54,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:22:54,874 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:22:54,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:22:54,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:22:54,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:22:54,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:22:54,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:22:54,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:22:54,877 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:22:54,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:22:54,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:22:54,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:22:54,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:22:54,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:22:54,879 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:22:54,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:22:54,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:22:54,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:22:54,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:22:54,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:22:54,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:22:54,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:22:54,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:22:54,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:22:54,881 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:22:55,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:22:55,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:22:55,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:22:55,339 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:22:55,340 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:22:55,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/xor3.i [2020-10-29 03:22:55,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/709462123/5e5b1e7e7f7345928369dd2b092142b6/FLAGf635fcd86 [2020-10-29 03:22:56,159 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:22:56,159 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/xor3.i [2020-10-29 03:22:56,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/709462123/5e5b1e7e7f7345928369dd2b092142b6/FLAGf635fcd86 [2020-10-29 03:22:56,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/709462123/5e5b1e7e7f7345928369dd2b092142b6 [2020-10-29 03:22:56,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:22:56,490 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:22:56,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:22:56,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:22:56,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:22:56,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:22:56" (1/1) ... [2020-10-29 03:22:56,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60a4c9c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:56, skipping insertion in model container [2020-10-29 03:22:56,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:22:56" (1/1) ... [2020-10-29 03:22:56,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:22:56,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:22:56,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:22:56,789 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:22:56,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:22:56,880 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:22:56,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:56 WrapperNode [2020-10-29 03:22:56,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:22:56,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:22:56,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:22:56,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:22:56,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:56" (1/1) ... [2020-10-29 03:22:56,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:56" (1/1) ... [2020-10-29 03:22:56,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:56" (1/1) ... [2020-10-29 03:22:56,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:56" (1/1) ... [2020-10-29 03:22:56,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:56" (1/1) ... [2020-10-29 03:22:56,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:56" (1/1) ... [2020-10-29 03:22:56,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:56" (1/1) ... [2020-10-29 03:22:56,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:22:56,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:22:56,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:22:56,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:22:56,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:22:57,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:22:57,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:22:57,079 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:22:57,079 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2020-10-29 03:22:57,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:22:57,080 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:22:57,080 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:22:57,080 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:22:57,080 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:22:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:22:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:22:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:22:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2020-10-29 03:22:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:22:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:22:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:22:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:22:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:22:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:22:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:22:57,495 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:22:57,496 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 03:22:57,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:22:57 BoogieIcfgContainer [2020-10-29 03:22:57,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:22:57,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:22:57,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:22:57,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:22:57,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:22:56" (1/3) ... [2020-10-29 03:22:57,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574b9f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:22:57, skipping insertion in model container [2020-10-29 03:22:57,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:56" (2/3) ... [2020-10-29 03:22:57,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574b9f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:22:57, skipping insertion in model container [2020-10-29 03:22:57,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:22:57" (3/3) ... [2020-10-29 03:22:57,509 INFO L111 eAbstractionObserver]: Analyzing ICFG xor3.i [2020-10-29 03:22:57,526 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:22:57,536 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:22:57,553 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:22:57,586 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:22:57,586 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:22:57,586 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:22:57,586 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:22:57,587 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:22:57,587 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:22:57,587 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:22:57,587 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:22:57,608 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-29 03:22:57,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 03:22:57,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:57,618 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:57,619 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:57,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:57,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1157692497, now seen corresponding path program 1 times [2020-10-29 03:22:57,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:57,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484746078] [2020-10-29 03:22:57,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:57,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:58,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:58,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:58,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:58,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:58,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:58,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:22:58,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:22:58,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 702 [2020-10-29 03:22:58,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:58,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:58,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:22:58,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 03:22:58,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:22:58,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:22:58,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:58,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:58,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:58,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:58,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:58,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 03:22:58,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:58,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:58,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:58,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:58,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:58,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:22:58,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:58,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:58,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:58,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:58,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:22:58,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:58,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:22:58,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:58,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:58,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:58,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 03:22:58,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:58,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:22:58,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 03:22:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:58,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:58,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:58,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:58,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:22:58,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:58,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:22:58,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:58,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:58,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:58,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:58,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:58,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:22:58,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:22:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:58,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:58,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:58,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:58,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:22:58,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:58,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 03:22:58,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:58,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:58,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 03:22:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:58,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:22:58,820 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 03:22:58,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484746078] [2020-10-29 03:22:58,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:58,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-29 03:22:58,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389620002] [2020-10-29 03:22:58,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:22:58,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:58,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:22:58,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:22:58,874 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2020-10-29 03:22:59,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:59,095 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2020-10-29 03:22:59,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:22:59,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-29 03:22:59,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:59,107 INFO L225 Difference]: With dead ends: 62 [2020-10-29 03:22:59,108 INFO L226 Difference]: Without dead ends: 30 [2020-10-29 03:22:59,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 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 03:22:59,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-29 03:22:59,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-29 03:22:59,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 03:22:59,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-29 03:22:59,164 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-29 03:22:59,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:59,165 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-29 03:22:59,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:22:59,165 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-29 03:22:59,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 03:22:59,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:59,168 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:59,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:22:59,168 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:59,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:59,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1572355889, now seen corresponding path program 1 times [2020-10-29 03:22:59,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:59,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912576738] [2020-10-29 03:22:59,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:59,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:59,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:59,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:59,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:59,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:01,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:01,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:23:01,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:23:01,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2277 [2020-10-29 03:23:01,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:01,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:01,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:23:01,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 03:23:01,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:23:01,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:01,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:01,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:01,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:01,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:01,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:01,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:23:01,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:01,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:01,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:01,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:01,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:01,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:01,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:23:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:01,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:01,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:01,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:01,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:23:01,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:01,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 03:23:01,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:01,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:23:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:01,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:23:01,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:01,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 03:23:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:01,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:01,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:01,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:01,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:23:01,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:01,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:23:01,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:01,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:23:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:23:01,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:01,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:23:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:01,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:01,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:01,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:01,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:23:01,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:01,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 03:23:01,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:01,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:01,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:23:01,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:01,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:23:01,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 03:23:01,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912576738] [2020-10-29 03:23:01,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:01,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:23:01,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429603433] [2020-10-29 03:23:01,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:23:01,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:01,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:23:01,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:23:01,718 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-29 03:23:02,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:02,008 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2020-10-29 03:23:02,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:23:02,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-29 03:23:02,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:02,011 INFO L225 Difference]: With dead ends: 54 [2020-10-29 03:23:02,011 INFO L226 Difference]: Without dead ends: 34 [2020-10-29 03:23:02,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:23:02,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-29 03:23:02,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-10-29 03:23:02,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 03:23:02,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-29 03:23:02,023 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 36 [2020-10-29 03:23:02,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:02,023 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-29 03:23:02,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:23:02,024 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-29 03:23:02,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 03:23:02,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:02,028 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:02,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:23:02,028 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:02,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:02,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1677955925, now seen corresponding path program 1 times [2020-10-29 03:23:02,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:02,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499897308] [2020-10-29 03:23:02,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:02,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:02,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:02,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:02,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:02,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:07,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:07,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:23:07,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:23:07,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:23:07,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:07,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:07,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:23:07,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 03:23:07,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:23:07,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:07,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:07,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:07,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:07,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:07,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:07,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:23:07,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:07,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:07,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:07,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:07,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:07,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:23:07,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:23:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:07,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:07,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:07,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:07,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:23:07,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:07,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 03:23:07,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:07,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:07,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:23:07,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:07,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:23:07,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:07,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 03:23:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:07,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:07,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:07,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:07,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:23:07,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:07,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 03:23:07,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:07,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:07,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:23:07,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:07,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:23:07,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:07,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:23:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:07,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:07,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:07,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:07,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:23:07,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:07,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 03:23:07,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:07,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:07,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:23:07,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:07,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:23:07,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 03:23:07,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499897308] [2020-10-29 03:23:07,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:07,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:23:07,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939304538] [2020-10-29 03:23:07,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:23:07,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:07,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:23:07,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:23:07,343 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 8 states. [2020-10-29 03:23:07,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:07,674 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2020-10-29 03:23:07,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:23:07,675 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-29 03:23:07,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:07,676 INFO L225 Difference]: With dead ends: 61 [2020-10-29 03:23:07,676 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 03:23:07,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:23:07,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 03:23:07,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-10-29 03:23:07,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-29 03:23:07,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-29 03:23:07,687 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 44 [2020-10-29 03:23:07,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:07,687 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-29 03:23:07,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:23:07,688 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-29 03:23:07,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:23:07,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:07,690 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:07,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:23:07,690 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:07,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:07,691 INFO L82 PathProgramCache]: Analyzing trace with hash -475389049, now seen corresponding path program 2 times [2020-10-29 03:23:07,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:07,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358111203] [2020-10-29 03:23:07,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:07,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:07,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:07,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:07,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:09,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:12,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:12,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:23:12,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:23:12,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:23:12,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:12,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:12,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:23:12,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:23:12,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:23:12,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:12,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:12,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:12,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:12,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:12,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:12,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:23:12,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:12,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:12,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:12,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:12,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:12,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:23:12,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:23:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:12,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:12,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:12,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 03:23:12,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:12,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 03:23:12,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:12,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:23:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:23:12,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:12,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 03:23:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:12,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:12,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:12,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:12,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 03:23:12,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:12,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 03:23:12,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:12,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:12,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:23:12,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:12,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:23:12,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:12,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 03:23:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:12,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:12,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:12,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:12,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 03:23:12,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:12,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 03:23:12,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:12,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:12,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:23:12,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:12,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:23:12,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:12,969 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-29 03:23:12,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358111203] [2020-10-29 03:23:12,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:12,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:23:12,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89671732] [2020-10-29 03:23:12,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:23:12,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:12,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:23:12,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:23:12,974 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 6 states. [2020-10-29 03:23:13,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:13,314 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-10-29 03:23:13,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:23:13,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-29 03:23:13,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:13,316 INFO L225 Difference]: With dead ends: 66 [2020-10-29 03:23:13,316 INFO L226 Difference]: Without dead ends: 39 [2020-10-29 03:23:13,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:23:13,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-29 03:23:13,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-29 03:23:13,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 03:23:13,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-29 03:23:13,341 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 52 [2020-10-29 03:23:13,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:13,342 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-29 03:23:13,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:23:13,343 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-29 03:23:13,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 03:23:13,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:13,344 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:13,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:23:13,345 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:13,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:13,347 INFO L82 PathProgramCache]: Analyzing trace with hash -371753755, now seen corresponding path program 3 times [2020-10-29 03:23:13,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:13,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051617848] [2020-10-29 03:23:13,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:13,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:13,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:13,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:13,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:15,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:18,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:18,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:23:18,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:23:18,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:23:18,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:18,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:18,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:23:18,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-29 03:23:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:23:18,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:18,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:18,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:18,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:18,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:18,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:18,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:23:18,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:18,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:18,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:18,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:18,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:18,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:18,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:23:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:18,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:18,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:18,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:18,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:23:18,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:18,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 03:23:18,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:18,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:18,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:23:18,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:18,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:23:18,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:23:18,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:23:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:18,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:18,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:18,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:18,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:23:18,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:18,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 03:23:18,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:18,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:23:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:18,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:23:18,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 03:23:18,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:23:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:18,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:18,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:18,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:23:18,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:18,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 03:23:18,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:18,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:18,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:23:18,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:18,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:23:18,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-29 03:23:18,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051617848] [2020-10-29 03:23:18,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:18,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:23:18,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102771255] [2020-10-29 03:23:18,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:23:18,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:18,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:23:18,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:23:18,609 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 7 states. [2020-10-29 03:23:18,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:18,977 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2020-10-29 03:23:18,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:23:18,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2020-10-29 03:23:18,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:18,979 INFO L225 Difference]: With dead ends: 70 [2020-10-29 03:23:18,980 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 03:23:18,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:23:18,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 03:23:18,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-29 03:23:18,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 03:23:19,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-29 03:23:19,001 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 58 [2020-10-29 03:23:19,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:19,001 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-29 03:23:19,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:23:19,001 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-29 03:23:19,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 03:23:19,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:19,006 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:19,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:23:19,008 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:19,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:19,008 INFO L82 PathProgramCache]: Analyzing trace with hash -448194621, now seen corresponding path program 4 times [2020-10-29 03:23:19,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:19,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120908082] [2020-10-29 03:23:19,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:19,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:19,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:19,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:19,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:21,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:24,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:24,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 03:23:24,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:23:24,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:23:24,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:24,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:24,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:23:24,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 03:23:24,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:23:24,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:24,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:24,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:24,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:24,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:24,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:24,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:23:24,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:24,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:24,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:24,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:23:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:24,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:24,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:24,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:24,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 03:23:24,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:24,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 03:23:24,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:24,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:24,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:23:24,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:24,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:23:24,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:24,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 03:23:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:24,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:24,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:24,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:24,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 03:23:24,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:24,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 03:23:24,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:24,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:24,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:23:24,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:24,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:23:24,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:24,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 03:23:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:24,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:24,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:24,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:24,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 03:23:24,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:24,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 03:23:24,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:24,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:23:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:24,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:23:24,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:24,381 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 48 proven. 105 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-29 03:23:24,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120908082] [2020-10-29 03:23:24,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:24,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:23:24,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862290351] [2020-10-29 03:23:24,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:23:24,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:24,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:23:24,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:23:24,387 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 12 states. [2020-10-29 03:23:24,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:24,917 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2020-10-29 03:23:24,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:23:24,918 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-10-29 03:23:24,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:24,919 INFO L225 Difference]: With dead ends: 77 [2020-10-29 03:23:24,919 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 03:23:24,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:23:24,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 03:23:24,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-10-29 03:23:24,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 03:23:24,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-10-29 03:23:24,932 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 64 [2020-10-29 03:23:24,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:24,932 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-10-29 03:23:24,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:23:24,932 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-10-29 03:23:24,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 03:23:24,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:24,937 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:24,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:23:24,937 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:24,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:24,938 INFO L82 PathProgramCache]: Analyzing trace with hash 585477535, now seen corresponding path program 5 times [2020-10-29 03:23:24,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:24,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354431274] [2020-10-29 03:23:24,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:24,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:24,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:24,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:25,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:28,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:29,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:29,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 03:23:29,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:23:29,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:23:29,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:29,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:29,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:23:29,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-29 03:23:29,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:23:29,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:30,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:30,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:30,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:30,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:30,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:30,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:23:30,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:30,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:30,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:30,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:23:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:30,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:30,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:30,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:30,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 03:23:30,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:30,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 03:23:30,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:30,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:30,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:23:30,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:30,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:23:30,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:30,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:23:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:30,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:30,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:30,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:30,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 03:23:30,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:30,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 03:23:30,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:30,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:30,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:23:30,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:30,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:23:30,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:23:30,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:23:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:30,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:30,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:30,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:30,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 03:23:30,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:30,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 03:23:30,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:30,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:30,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:23:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:23:30,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 75 proven. 166 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-29 03:23:30,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354431274] [2020-10-29 03:23:30,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:30,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:23:30,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924565361] [2020-10-29 03:23:30,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:23:30,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:30,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:23:30,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:23:30,344 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 14 states. [2020-10-29 03:23:30,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:30,803 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-10-29 03:23:30,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:23:30,804 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 72 [2020-10-29 03:23:30,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:30,805 INFO L225 Difference]: With dead ends: 85 [2020-10-29 03:23:30,805 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 03:23:30,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:23:30,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 03:23:30,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-10-29 03:23:30,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 03:23:30,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-29 03:23:30,823 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 72 [2020-10-29 03:23:30,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:30,825 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-29 03:23:30,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:23:30,826 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-29 03:23:30,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 03:23:30,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:30,831 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:30,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:23:30,831 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:30,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:30,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1600663941, now seen corresponding path program 6 times [2020-10-29 03:23:30,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:30,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110190931] [2020-10-29 03:23:30,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:30,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:30,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:30,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:30,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:35,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:35,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 03:23:35,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:23:35,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:23:35,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:35,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:35,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:23:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-29 03:23:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:23:35,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:35,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:35,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:35,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:35,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:35,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:35,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:23:35,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:35,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:35,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:35,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:23:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:35,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:35,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:36,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:36,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 03:23:36,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:36,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 03:23:36,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:36,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:36,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:23:36,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:36,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:23:36,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:36,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 03:23:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:36,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:36,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:36,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:36,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 03:23:36,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:36,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 03:23:36,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:36,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:23:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:23:36,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:36,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 03:23:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:36,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:36,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:36,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:36,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 03:23:36,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:36,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 03:23:36,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:36,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:36,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:23:36,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:36,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:23:36,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 108 proven. 241 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-29 03:23:36,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110190931] [2020-10-29 03:23:36,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:36,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:23:36,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696800652] [2020-10-29 03:23:36,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:23:36,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:36,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:23:36,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:23:36,220 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 16 states. [2020-10-29 03:23:36,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:36,725 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2020-10-29 03:23:36,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:23:36,726 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 80 [2020-10-29 03:23:36,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:36,727 INFO L225 Difference]: With dead ends: 93 [2020-10-29 03:23:36,727 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 03:23:36,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:23:36,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 03:23:36,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-29 03:23:36,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 03:23:36,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-29 03:23:36,736 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 80 [2020-10-29 03:23:36,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:36,736 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-29 03:23:36,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:23:36,736 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-29 03:23:36,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 03:23:36,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:36,738 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:36,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:23:36,738 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:36,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:36,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1211221417, now seen corresponding path program 7 times [2020-10-29 03:23:36,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:36,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533999044] [2020-10-29 03:23:36,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:36,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:36,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:36,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:36,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:41,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:41,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 03:23:41,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:23:41,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:23:41,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:41,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:41,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:23:41,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-29 03:23:41,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:23:41,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:41,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:41,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:41,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:41,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:41,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:41,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:23:41,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:41,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:41,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:41,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:41,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:41,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:41,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:23:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:41,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:41,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:41,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:41,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 03:23:41,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:41,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 03:23:41,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:41,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:23:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:23:41,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:42,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 03:23:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:42,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:42,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:42,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:42,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 03:23:42,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:42,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 03:23:42,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:42,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:42,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:23:42,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:42,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:23:42,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:42,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:23:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:42,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:42,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:42,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:42,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 03:23:42,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:42,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 03:23:42,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:42,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:42,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:23:42,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:42,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:23:42,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:42,128 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 147 proven. 330 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-29 03:23:42,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533999044] [2020-10-29 03:23:42,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:42,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:23:42,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890832639] [2020-10-29 03:23:42,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:23:42,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:42,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:23:42,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:23:42,132 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 18 states. [2020-10-29 03:23:42,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:42,729 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2020-10-29 03:23:42,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:23:42,730 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 88 [2020-10-29 03:23:42,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:42,731 INFO L225 Difference]: With dead ends: 101 [2020-10-29 03:23:42,731 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 03:23:42,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:23:42,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 03:23:42,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-29 03:23:42,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 03:23:42,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-10-29 03:23:42,740 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 88 [2020-10-29 03:23:42,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:42,741 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-10-29 03:23:42,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:23:42,741 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-10-29 03:23:42,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 03:23:42,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:42,742 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:42,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:23:42,742 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:42,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:42,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1167609549, now seen corresponding path program 8 times [2020-10-29 03:23:42,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:42,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320080686] [2020-10-29 03:23:42,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:42,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:42,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:42,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:42,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:47,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:47,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 03:23:47,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:23:47,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:23:47,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:47,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:47,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:23:47,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-29 03:23:47,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:23:47,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:47,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:47,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:47,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:47,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:47,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:47,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:23:47,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:47,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:47,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:47,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:47,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:47,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:47,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:23:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:47,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:47,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:47,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:47,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 03:23:47,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:47,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 03:23:47,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:47,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:23:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:23:47,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:48,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:23:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:48,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:48,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:48,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:48,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 03:23:48,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:48,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 03:23:48,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:48,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:48,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:23:48,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:48,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:23:48,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:48,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 03:23:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:48,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:48,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:48,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:48,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 03:23:48,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:48,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 03:23:48,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:48,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:48,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:23:48,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:48,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:23:48,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:48,188 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 192 proven. 433 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-29 03:23:48,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320080686] [2020-10-29 03:23:48,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:48,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:23:48,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115045631] [2020-10-29 03:23:48,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:23:48,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:48,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:23:48,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:23:48,191 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 20 states. [2020-10-29 03:23:48,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:48,838 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2020-10-29 03:23:48,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:23:48,839 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 96 [2020-10-29 03:23:48,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:48,840 INFO L225 Difference]: With dead ends: 109 [2020-10-29 03:23:48,840 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 03:23:48,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:23:48,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 03:23:48,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2020-10-29 03:23:48,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 03:23:48,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-10-29 03:23:48,850 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 96 [2020-10-29 03:23:48,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:48,850 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-10-29 03:23:48,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:23:48,851 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-10-29 03:23:48,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 03:23:48,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:48,852 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:48,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:23:48,852 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:48,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:48,853 INFO L82 PathProgramCache]: Analyzing trace with hash -558697713, now seen corresponding path program 9 times [2020-10-29 03:23:48,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:48,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543418851] [2020-10-29 03:23:48,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:48,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:48,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:48,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:48,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:53,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:53,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 03:23:53,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:23:53,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:23:53,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:53,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:53,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:23:53,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-29 03:23:53,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:23:53,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:54,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:54,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:54,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:54,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:54,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:54,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:23:54,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:54,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:54,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:54,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:54,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:54,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:54,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:23:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:54,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:54,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:54,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:54,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:23:54,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:54,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 03:23:54,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:54,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:54,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:23:54,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:54,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:23:54,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:54,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:23:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:54,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:54,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:54,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:54,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:23:54,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:54,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 03:23:54,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:54,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:54,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:23:54,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:54,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:23:54,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:54,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 03:23:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:54,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:54,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:54,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:54,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:23:54,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:54,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 03:23:54,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:54,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:54,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:23:54,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:54,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:23:54,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 243 proven. 550 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 03:23:54,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543418851] [2020-10-29 03:23:54,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:54,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:23:54,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902065106] [2020-10-29 03:23:54,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:23:54,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:54,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:23:54,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:23:54,436 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 22 states. [2020-10-29 03:23:55,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:55,133 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2020-10-29 03:23:55,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:23:55,134 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 104 [2020-10-29 03:23:55,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:55,135 INFO L225 Difference]: With dead ends: 117 [2020-10-29 03:23:55,135 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:23:55,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=252, Invalid=740, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:23:55,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:23:55,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-29 03:23:55,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-29 03:23:55,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-10-29 03:23:55,147 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 104 [2020-10-29 03:23:55,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:55,147 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-10-29 03:23:55,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:23:55,148 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-10-29 03:23:55,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 03:23:55,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:55,149 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:55,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:23:55,149 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:55,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:55,150 INFO L82 PathProgramCache]: Analyzing trace with hash 728678379, now seen corresponding path program 10 times [2020-10-29 03:23:55,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:55,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700542214] [2020-10-29 03:23:55,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:55,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:55,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:55,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:55,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:00,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:00,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 03:24:00,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:24:00,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:24:00,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:00,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:00,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:24:00,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 03:24:00,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:24:00,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:00,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:00,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:00,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:00,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:00,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:00,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:24:00,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:00,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:00,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:00,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:24:00,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:24:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:00,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:00,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:00,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:00,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:24:00,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:00,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 03:24:00,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:00,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:00,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:24:00,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:00,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:24:00,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:24:00,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 03:24:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:00,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:00,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:00,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:00,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:24:00,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:00,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 03:24:00,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:00,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:00,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:24:00,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:00,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:24:00,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:00,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 03:24:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:00,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:00,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:00,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:00,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:24:00,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:00,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 03:24:00,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:00,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:00,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:24:00,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:00,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:24:00,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:00,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 300 proven. 681 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 03:24:00,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700542214] [2020-10-29 03:24:00,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:00,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:24:00,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544282612] [2020-10-29 03:24:00,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:24:00,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:00,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:24:00,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:24:00,914 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 24 states. [2020-10-29 03:24:01,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:01,701 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2020-10-29 03:24:01,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:24:01,701 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 112 [2020-10-29 03:24:01,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:01,703 INFO L225 Difference]: With dead ends: 125 [2020-10-29 03:24:01,703 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 03:24:01,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:24:01,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 03:24:01,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-29 03:24:01,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-29 03:24:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-10-29 03:24:01,714 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 112 [2020-10-29 03:24:01,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:01,714 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-10-29 03:24:01,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:24:01,715 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-10-29 03:24:01,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 03:24:01,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:01,722 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:01,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:24:01,722 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:01,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:01,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1674172359, now seen corresponding path program 11 times [2020-10-29 03:24:01,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:01,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520092428] [2020-10-29 03:24:01,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:01,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:01,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:01,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:01,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:06,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:06,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 03:24:06,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:24:06,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:24:06,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:06,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:06,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:24:06,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 03:24:06,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:24:06,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:06,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:06,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:06,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:06,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:06,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:06,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:24:06,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:06,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:06,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:06,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:06,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:06,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:06,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:24:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:06,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:06,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:07,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:07,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:24:07,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:07,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 03:24:07,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:07,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:07,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:24:07,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:07,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:24:07,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:24:07,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:24:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:07,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:07,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:07,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:07,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:24:07,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:07,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 03:24:07,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:07,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:07,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:24:07,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:07,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:24:07,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:24:07,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:24:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:07,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:07,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:07,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:07,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:24:07,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:07,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 03:24:07,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:07,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:07,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:24:07,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:07,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:24:07,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:24:07,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 363 proven. 826 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 03:24:07,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520092428] [2020-10-29 03:24:07,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:07,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:24:07,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768937907] [2020-10-29 03:24:07,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:24:07,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:07,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:24:07,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:24:07,631 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 26 states. [2020-10-29 03:24:08,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:08,480 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2020-10-29 03:24:08,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:24:08,480 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 120 [2020-10-29 03:24:08,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:08,482 INFO L225 Difference]: With dead ends: 133 [2020-10-29 03:24:08,482 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 03:24:08,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=350, Invalid=1056, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:24:08,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 03:24:08,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-10-29 03:24:08,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-29 03:24:08,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-10-29 03:24:08,492 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 120 [2020-10-29 03:24:08,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:08,493 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-10-29 03:24:08,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:24:08,493 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-10-29 03:24:08,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 03:24:08,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:08,494 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:08,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:24:08,495 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:08,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:08,495 INFO L82 PathProgramCache]: Analyzing trace with hash -211617117, now seen corresponding path program 12 times [2020-10-29 03:24:08,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:08,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571234950] [2020-10-29 03:24:08,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:08,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:08,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:08,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:08,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:13,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:13,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 03:24:13,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:24:13,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:24:13,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:13,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:13,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:24:13,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 03:24:13,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:24:13,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:13,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:13,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:13,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:13,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:13,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:13,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:24:13,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:13,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:13,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:13,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:13,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:13,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:13,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:24:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:13,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:13,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:13,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:13,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:24:13,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:13,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 03:24:13,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:13,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:13,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:24:13,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:13,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:24:13,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:14,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:24:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:14,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:14,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:14,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:14,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:24:14,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:14,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 03:24:14,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:14,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:14,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:24:14,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:14,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:24:14,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:14,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-29 03:24:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:14,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:14,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:14,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:14,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:24:14,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:14,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 03:24:14,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:14,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:14,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:24:14,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:14,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:24:14,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:14,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1504 backedges. 432 proven. 985 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-29 03:24:14,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571234950] [2020-10-29 03:24:14,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:14,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:24:14,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758150074] [2020-10-29 03:24:14,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:24:14,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:14,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:24:14,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:24:14,234 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 28 states. [2020-10-29 03:24:15,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:15,220 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2020-10-29 03:24:15,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:24:15,221 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 128 [2020-10-29 03:24:15,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:15,222 INFO L225 Difference]: With dead ends: 141 [2020-10-29 03:24:15,222 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 03:24:15,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=405, Invalid=1235, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:24:15,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 03:24:15,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-29 03:24:15,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-29 03:24:15,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-10-29 03:24:15,246 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 128 [2020-10-29 03:24:15,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:15,246 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-10-29 03:24:15,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:24:15,247 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-10-29 03:24:15,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-29 03:24:15,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:15,248 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:15,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:24:15,248 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:15,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:15,250 INFO L82 PathProgramCache]: Analyzing trace with hash -632756097, now seen corresponding path program 13 times [2020-10-29 03:24:15,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:15,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083638773] [2020-10-29 03:24:15,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:15,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:15,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:15,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:15,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:20,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:20,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 03:24:20,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:24:20,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:24:20,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:20,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:20,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:24:20,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 03:24:20,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:24:20,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:20,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:20,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:20,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:20,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:20,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:20,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:24:20,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:20,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:20,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:20,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:20,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:20,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:20,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:24:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:20,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:20,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:20,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:20,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:24:20,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:20,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 03:24:20,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:20,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:24:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:24:20,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:20,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:24:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:20,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:20,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:20,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:20,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:24:20,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:20,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 03:24:20,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:20,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:24:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:24:20,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:20,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 03:24:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:20,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:20,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:21,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:21,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:24:21,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:21,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 03:24:21,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:21,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:24:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:24:21,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:21,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1758 backedges. 507 proven. 1158 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-29 03:24:21,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083638773] [2020-10-29 03:24:21,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:21,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:24:21,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150885845] [2020-10-29 03:24:21,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:24:21,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:21,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:24:21,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:24:21,035 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 30 states. [2020-10-29 03:24:22,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:22,099 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2020-10-29 03:24:22,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:24:22,100 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 136 [2020-10-29 03:24:22,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:22,101 INFO L225 Difference]: With dead ends: 149 [2020-10-29 03:24:22,102 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 03:24:22,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=464, Invalid=1428, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:24:22,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 03:24:22,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-10-29 03:24:22,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-29 03:24:22,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-10-29 03:24:22,111 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 136 [2020-10-29 03:24:22,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:22,112 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-10-29 03:24:22,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:24:22,112 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-10-29 03:24:22,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-29 03:24:22,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:22,114 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:22,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:24:22,114 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:22,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:22,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1728421541, now seen corresponding path program 14 times [2020-10-29 03:24:22,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:22,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127803552] [2020-10-29 03:24:22,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:22,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:22,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:22,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:22,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:27,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:27,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 03:24:27,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:24:27,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:24:27,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:27,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:27,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:24:27,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-29 03:24:27,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:24:27,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:27,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:27,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:27,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:27,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:27,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:27,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:24:27,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:27,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:27,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:27,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:27,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:27,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:27,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:24:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:27,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:27,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:27,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:27,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:24:27,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:27,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 03:24:27,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:27,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:27,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:24:27,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:27,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:24:27,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:27,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 03:24:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:27,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:27,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:27,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:27,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:24:27,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:27,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 03:24:27,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:27,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:27,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:24:27,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:27,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:24:27,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:27,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-29 03:24:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:27,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:27,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:27,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:27,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:24:27,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:27,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 03:24:27,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:27,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:27,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:24:27,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:27,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:24:27,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:27,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2032 backedges. 588 proven. 1345 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-29 03:24:27,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127803552] [2020-10-29 03:24:27,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:27,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:24:27,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841509204] [2020-10-29 03:24:27,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:24:27,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:27,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:24:27,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:24:27,978 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 32 states. [2020-10-29 03:24:29,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:29,175 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2020-10-29 03:24:29,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:24:29,176 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 144 [2020-10-29 03:24:29,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:29,177 INFO L225 Difference]: With dead ends: 157 [2020-10-29 03:24:29,177 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 03:24:29,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:24:29,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 03:24:29,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-10-29 03:24:29,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 03:24:29,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-10-29 03:24:29,186 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 144 [2020-10-29 03:24:29,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:29,186 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-10-29 03:24:29,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:24:29,187 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-10-29 03:24:29,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-29 03:24:29,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:29,188 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:29,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:24:29,189 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:29,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:29,189 INFO L82 PathProgramCache]: Analyzing trace with hash 476456247, now seen corresponding path program 15 times [2020-10-29 03:24:29,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:29,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796196850] [2020-10-29 03:24:29,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:29,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:29,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:29,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:29,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:34,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:34,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 03:24:34,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:24:34,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:24:34,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:34,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:34,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:24:34,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-29 03:24:34,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:24:34,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:34,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:34,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:34,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:34,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:34,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:34,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:24:34,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:34,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:34,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:34,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:34,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:34,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:34,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:24:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:34,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:34,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:34,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:34,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:24:34,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:34,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 03:24:34,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:34,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:24:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:24:34,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:34,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:24:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:34,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:34,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:35,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:35,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:24:35,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:35,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 03:24:35,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:35,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:35,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:24:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:24:35,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:35,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 03:24:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:35,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:35,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:35,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:35,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:24:35,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:35,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 03:24:35,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:35,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:24:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:24:35,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:35,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2326 backedges. 675 proven. 1546 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-29 03:24:35,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796196850] [2020-10-29 03:24:35,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:35,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:24:35,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190358331] [2020-10-29 03:24:35,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:24:35,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:35,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:24:35,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:24:35,205 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 34 states. [2020-10-29 03:24:36,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:36,464 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2020-10-29 03:24:36,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:24:36,464 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 152 [2020-10-29 03:24:36,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:36,466 INFO L225 Difference]: With dead ends: 165 [2020-10-29 03:24:36,466 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 03:24:36,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=594, Invalid=1856, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 03:24:36,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 03:24:36,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-10-29 03:24:36,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-29 03:24:36,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2020-10-29 03:24:36,475 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 152 [2020-10-29 03:24:36,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:36,475 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2020-10-29 03:24:36,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:24:36,475 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2020-10-29 03:24:36,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 03:24:36,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:36,477 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:36,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:24:36,478 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:36,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:36,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1444219885, now seen corresponding path program 16 times [2020-10-29 03:24:36,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:36,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916691641] [2020-10-29 03:24:36,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:36,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:36,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:36,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:36,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:41,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:41,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 03:24:41,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:24:41,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:24:41,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:41,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:24:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-29 03:24:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:24:41,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:41,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:41,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:41,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:41,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:41,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:41,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:24:41,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:41,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:41,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:41,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:41,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:41,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:41,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:24:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:41,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:41,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:41,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:41,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:24:41,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:41,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 03:24:41,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:41,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:41,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:24:41,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:41,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:24:41,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:42,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:24:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:42,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:42,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:42,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:42,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:24:42,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:42,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 03:24:42,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:42,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:42,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:24:42,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:42,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:24:42,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:42,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 03:24:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:42,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:42,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:42,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:42,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:24:42,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:42,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 03:24:42,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:42,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:42,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:24:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:24:42,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:42,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 768 proven. 1761 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-29 03:24:42,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916691641] [2020-10-29 03:24:42,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:42,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:24:42,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89940649] [2020-10-29 03:24:42,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:24:42,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:42,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:24:42,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:24:42,598 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand 36 states. [2020-10-29 03:24:43,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:43,936 INFO L93 Difference]: Finished difference Result 173 states and 184 transitions. [2020-10-29 03:24:43,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:24:43,937 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 160 [2020-10-29 03:24:43,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:43,938 INFO L225 Difference]: With dead ends: 173 [2020-10-29 03:24:43,938 INFO L226 Difference]: Without dead ends: 94 [2020-10-29 03:24:43,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=665, Invalid=2091, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 03:24:43,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-29 03:24:43,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2020-10-29 03:24:43,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-29 03:24:43,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2020-10-29 03:24:43,948 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 160 [2020-10-29 03:24:43,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:43,948 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2020-10-29 03:24:43,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:24:43,948 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2020-10-29 03:24:43,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-29 03:24:43,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:43,950 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:43,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:24:43,951 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:43,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:43,951 INFO L82 PathProgramCache]: Analyzing trace with hash -883454481, now seen corresponding path program 17 times [2020-10-29 03:24:43,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:43,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960540912] [2020-10-29 03:24:43,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:43,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:43,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:44,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:44,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:48,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:48,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-29 03:24:48,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:24:48,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:24:48,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:48,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:48,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:24:48,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-29 03:24:48,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:24:48,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:49,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:49,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:49,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:49,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:49,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:49,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:24:49,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:49,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:49,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:49,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:49,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:49,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:49,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:24:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:49,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:49,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:49,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:49,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:24:49,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:49,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 03:24:49,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:49,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:49,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:24:49,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:49,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:24:49,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:49,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 03:24:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:49,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:49,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:49,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:49,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:24:49,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:49,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 03:24:49,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:49,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:24:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:24:49,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:49,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 03:24:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:49,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:49,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:50,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:50,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:24:50,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:50,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 03:24:50,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:50,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:50,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:24:50,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:50,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:24:50,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:50,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2974 backedges. 867 proven. 1990 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-29 03:24:50,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960540912] [2020-10-29 03:24:50,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:50,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 03:24:50,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042290978] [2020-10-29 03:24:50,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 03:24:50,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:50,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 03:24:50,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:24:50,096 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 38 states. [2020-10-29 03:24:51,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:51,659 INFO L93 Difference]: Finished difference Result 181 states and 192 transitions. [2020-10-29 03:24:51,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:24:51,663 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 168 [2020-10-29 03:24:51,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:51,664 INFO L225 Difference]: With dead ends: 181 [2020-10-29 03:24:51,664 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 03:24:51,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=740, Invalid=2340, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 03:24:51,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 03:24:51,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-29 03:24:51,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-29 03:24:51,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2020-10-29 03:24:51,677 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 168 [2020-10-29 03:24:51,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:51,678 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2020-10-29 03:24:51,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 03:24:51,678 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2020-10-29 03:24:51,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-29 03:24:51,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:51,682 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 17, 17, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:51,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:24:51,683 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:51,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:51,683 INFO L82 PathProgramCache]: Analyzing trace with hash 988459723, now seen corresponding path program 18 times [2020-10-29 03:24:51,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:51,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097489347] [2020-10-29 03:24:51,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:51,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:51,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:51,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:51,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:56,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:56,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-29 03:24:56,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:24:56,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:24:56,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:56,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:56,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:24:56,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-29 03:24:56,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:24:56,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:57,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:57,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:57,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:57,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:57,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:57,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:24:57,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:57,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:57,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:57,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:57,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:57,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:57,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:24:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:57,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:57,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:57,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:57,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:24:57,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:57,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 03:24:57,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:57,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:57,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:24:57,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:57,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:24:57,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:57,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:24:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:57,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:57,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:57,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:57,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:24:57,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:57,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 03:24:57,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:57,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:57,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:24:57,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:57,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:24:57,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:57,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-29 03:24:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:57,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:57,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:57,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:57,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:24:57,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:57,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 03:24:57,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:57,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:57,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:24:57,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:24:57,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:24:57,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:57,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3328 backedges. 972 proven. 2233 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-29 03:24:57,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097489347] [2020-10-29 03:24:57,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:57,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-29 03:24:57,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190304531] [2020-10-29 03:24:57,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-29 03:24:57,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:57,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-29 03:24:57,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:24:57,970 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand 40 states. [2020-10-29 03:24:59,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:59,413 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2020-10-29 03:24:59,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 03:24:59,413 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 176 [2020-10-29 03:24:59,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:59,415 INFO L225 Difference]: With dead ends: 189 [2020-10-29 03:24:59,415 INFO L226 Difference]: Without dead ends: 102 [2020-10-29 03:24:59,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=819, Invalid=2603, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 03:24:59,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-29 03:24:59,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-29 03:24:59,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-29 03:24:59,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2020-10-29 03:24:59,425 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 176 [2020-10-29 03:24:59,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:59,425 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2020-10-29 03:24:59,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-29 03:24:59,426 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2020-10-29 03:24:59,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-29 03:24:59,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:59,427 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:59,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:24:59,427 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:59,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:59,428 INFO L82 PathProgramCache]: Analyzing trace with hash -816635225, now seen corresponding path program 19 times [2020-10-29 03:24:59,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:59,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295189642] [2020-10-29 03:24:59,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:59,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:59,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:59,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:59,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:04,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:04,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-29 03:25:04,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:25:04,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:25:04,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:04,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:04,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:25:04,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-29 03:25:04,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:25:04,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:04,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:25:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:04,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:04,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:04,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:25:04,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:25:04,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:25:04,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:04,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:04,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:25:04,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:25:04,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:25:04,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:04,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:25:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:04,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:04,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:04,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:04,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:25:04,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:04,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 03:25:04,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:04,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:25:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:25:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:25:04,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:05,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 03:25:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:05,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:05,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:05,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:05,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:25:05,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:05,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 03:25:05,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:05,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:05,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:25:05,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:25:05,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:25:05,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:05,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 03:25:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:05,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:05,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:05,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:05,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:25:05,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:05,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 03:25:05,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:05,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:05,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:25:05,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:25:05,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:25:05,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:05,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3702 backedges. 1083 proven. 2490 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-29 03:25:05,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295189642] [2020-10-29 03:25:05,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:25:05,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-29 03:25:05,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338518247] [2020-10-29 03:25:05,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-29 03:25:05,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:25:05,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-29 03:25:05,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=1280, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:25:05,906 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand 42 states. [2020-10-29 03:25:07,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:25:07,451 INFO L93 Difference]: Finished difference Result 197 states and 208 transitions. [2020-10-29 03:25:07,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 03:25:07,452 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 184 [2020-10-29 03:25:07,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:25:07,453 INFO L225 Difference]: With dead ends: 197 [2020-10-29 03:25:07,453 INFO L226 Difference]: Without dead ends: 106 [2020-10-29 03:25:07,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=902, Invalid=2880, Unknown=0, NotChecked=0, Total=3782 [2020-10-29 03:25:07,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-29 03:25:07,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-10-29 03:25:07,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-29 03:25:07,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2020-10-29 03:25:07,470 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 184 [2020-10-29 03:25:07,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:25:07,470 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2020-10-29 03:25:07,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-29 03:25:07,470 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2020-10-29 03:25:07,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-29 03:25:07,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:25:07,473 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:25:07,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:25:07,473 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:25:07,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:25:07,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1739562371, now seen corresponding path program 20 times [2020-10-29 03:25:07,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:25:07,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392434518] [2020-10-29 03:25:07,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:25:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:07,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:07,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:07,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:07,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:12,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:12,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-29 03:25:12,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:25:12,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:25:12,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:12,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:12,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:25:12,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 03:25:12,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:25:12,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:12,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:25:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:12,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:12,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:12,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:25:12,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:25:12,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:25:12,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:12,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:12,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:25:12,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:25:12,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:25:12,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:12,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:25:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:12,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:12,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:13,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:13,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:25:13,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:13,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 03:25:13,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:13,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:13,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:25:13,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:25:13,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:25:13,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:13,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:25:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:13,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:13,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:13,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:13,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:25:13,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:13,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 03:25:13,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:13,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:13,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:25:13,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:25:13,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:25:13,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:13,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-29 03:25:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:13,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:13,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:13,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:13,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:25:13,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:13,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 03:25:13,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:13,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:25:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:25:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:25:13,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:13,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 1200 proven. 2761 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-29 03:25:13,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392434518] [2020-10-29 03:25:13,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:25:13,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-29 03:25:13,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528724741] [2020-10-29 03:25:13,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-29 03:25:13,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:25:14,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-29 03:25:14,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1407, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:25:14,001 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand 44 states. [2020-10-29 03:25:15,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:25:15,896 INFO L93 Difference]: Finished difference Result 205 states and 216 transitions. [2020-10-29 03:25:15,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-29 03:25:15,896 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 192 [2020-10-29 03:25:15,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:25:15,897 INFO L225 Difference]: With dead ends: 205 [2020-10-29 03:25:15,898 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 03:25:15,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=989, Invalid=3171, Unknown=0, NotChecked=0, Total=4160 [2020-10-29 03:25:15,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 03:25:15,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2020-10-29 03:25:15,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-29 03:25:15,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 112 transitions. [2020-10-29 03:25:15,907 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 112 transitions. Word has length 192 [2020-10-29 03:25:15,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:25:15,908 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 112 transitions. [2020-10-29 03:25:15,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-29 03:25:15,908 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 112 transitions. [2020-10-29 03:25:15,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-29 03:25:15,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:25:15,910 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 20, 20, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:25:15,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:25:15,910 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:25:15,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:25:15,911 INFO L82 PathProgramCache]: Analyzing trace with hash -678501537, now seen corresponding path program 21 times [2020-10-29 03:25:15,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:25:15,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230658845] [2020-10-29 03:25:15,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:25:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:15,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:15,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:16,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:16,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:20,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:20,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-29 03:25:20,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:25:20,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:25:20,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:20,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:20,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:25:20,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-29 03:25:20,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:25:20,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:21,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:25:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:21,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:21,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:21,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:25:21,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:25:21,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:25:21,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:21,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:25:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:25:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:25:21,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:21,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:25:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:21,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:21,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:21,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:21,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:25:21,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:21,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 03:25:21,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:21,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:21,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:25:21,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:25:21,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:25:21,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:22,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 03:25:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:22,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:22,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:22,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:22,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:25:22,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:22,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 03:25:22,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:22,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:22,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:25:22,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:25:22,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:25:22,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:22,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-29 03:25:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:22,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:22,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:22,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:22,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:25:22,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:22,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 03:25:22,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:22,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:22,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:25:22,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:25:22,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:25:22,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:22,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 1323 proven. 3046 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-29 03:25:22,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230658845] [2020-10-29 03:25:22,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:25:22,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-29 03:25:22,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629051856] [2020-10-29 03:25:22,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-29 03:25:22,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:25:22,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-29 03:25:22,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=1540, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:25:22,583 INFO L87 Difference]: Start difference. First operand 108 states and 112 transitions. Second operand 46 states. [2020-10-29 03:25:24,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:25:24,618 INFO L93 Difference]: Finished difference Result 213 states and 224 transitions. [2020-10-29 03:25:24,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-29 03:25:24,619 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 200 [2020-10-29 03:25:24,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:25:24,620 INFO L225 Difference]: With dead ends: 213 [2020-10-29 03:25:24,620 INFO L226 Difference]: Without dead ends: 114 [2020-10-29 03:25:24,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1080, Invalid=3476, Unknown=0, NotChecked=0, Total=4556 [2020-10-29 03:25:24,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-29 03:25:24,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2020-10-29 03:25:24,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-29 03:25:24,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2020-10-29 03:25:24,631 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 200 [2020-10-29 03:25:24,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:25:24,631 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2020-10-29 03:25:24,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-29 03:25:24,631 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2020-10-29 03:25:24,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-29 03:25:24,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:25:24,633 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:25:24,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:25:24,634 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:25:24,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:25:24,634 INFO L82 PathProgramCache]: Analyzing trace with hash -756042693, now seen corresponding path program 22 times [2020-10-29 03:25:24,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:25:24,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219860237] [2020-10-29 03:25:24,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:25:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:24,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:24,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:24,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:24,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:29,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:29,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-29 03:25:29,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:25:29,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:25:29,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:29,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:29,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:25:29,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-29 03:25:29,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:25:29,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 03:25:30,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:25:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:30,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:30,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:30,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:25:30,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:25:30,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:25:30,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:30,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:30,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:25:30,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:25:30,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:25:30,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:30,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:25:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:30,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:30,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:30,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:30,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:25:30,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:30,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-29 03:25:30,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:30,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:30,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:25:30,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:25:30,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:25:30,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:31,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 03:25:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:31,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:31,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:31,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:31,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:25:31,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:31,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 03:25:31,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:31,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:31,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:25:31,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:25:31,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:25:31,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:31,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 03:25:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:31,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:31,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:31,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:31,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:25:31,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:31,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-29 03:25:31,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:31,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:31,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:25:31,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:25:31,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:25:31,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:31,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4944 backedges. 1452 proven. 3345 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-29 03:25:31,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219860237] [2020-10-29 03:25:31,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:25:31,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-29 03:25:31,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811216164] [2020-10-29 03:25:31,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-29 03:25:31,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:25:31,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-29 03:25:31,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=1679, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:25:31,631 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand 48 states. [2020-10-29 03:25:33,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:25:33,713 INFO L93 Difference]: Finished difference Result 221 states and 232 transitions. [2020-10-29 03:25:33,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-29 03:25:33,714 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 208 [2020-10-29 03:25:33,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:25:33,716 INFO L225 Difference]: With dead ends: 221 [2020-10-29 03:25:33,716 INFO L226 Difference]: Without dead ends: 118 [2020-10-29 03:25:33,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1175, Invalid=3795, Unknown=0, NotChecked=0, Total=4970 [2020-10-29 03:25:33,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-29 03:25:33,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-10-29 03:25:33,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-29 03:25:33,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions. [2020-10-29 03:25:33,726 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 208 [2020-10-29 03:25:33,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:25:33,726 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 120 transitions. [2020-10-29 03:25:33,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-29 03:25:33,727 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 120 transitions. [2020-10-29 03:25:33,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-29 03:25:33,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:25:33,728 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:25:33,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:25:33,729 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:25:33,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:25:33,729 INFO L82 PathProgramCache]: Analyzing trace with hash -633286633, now seen corresponding path program 23 times [2020-10-29 03:25:33,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:25:33,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729445636] [2020-10-29 03:25:33,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:25:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:33,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:33,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:33,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:33,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:38,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:38,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-29 03:25:38,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:25:38,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:25:38,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:38,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:38,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:25:38,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-29 03:25:38,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:25:38,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:39,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:25:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:39,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:39,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:39,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:25:39,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:25:39,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:25:39,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:39,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:39,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:25:39,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:25:39,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:25:39,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:39,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:25:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:39,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:39,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:39,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:39,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:25:39,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:39,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 03:25:39,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:39,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:39,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:25:39,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:25:39,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:25:39,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:40,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 03:25:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:40,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:40,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:40,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:40,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:25:40,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:40,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 03:25:40,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:40,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:40,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:25:40,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:25:40,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:25:40,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:40,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-29 03:25:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:40,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:40,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:40,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:40,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:25:40,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:40,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 03:25:40,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:40,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:40,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:25:40,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:25:40,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:25:40,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:40,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5398 backedges. 1587 proven. 3658 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-29 03:25:40,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729445636] [2020-10-29 03:25:40,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:25:40,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-29 03:25:40,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856007639] [2020-10-29 03:25:40,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-29 03:25:40,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:25:40,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-29 03:25:40,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=626, Invalid=1824, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 03:25:40,657 INFO L87 Difference]: Start difference. First operand 116 states and 120 transitions. Second operand 50 states. [2020-10-29 03:25:42,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:25:42,943 INFO L93 Difference]: Finished difference Result 229 states and 240 transitions. [2020-10-29 03:25:42,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-29 03:25:42,944 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 216 [2020-10-29 03:25:42,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:25:42,946 INFO L225 Difference]: With dead ends: 229 [2020-10-29 03:25:42,946 INFO L226 Difference]: Without dead ends: 122 [2020-10-29 03:25:42,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1274, Invalid=4128, Unknown=0, NotChecked=0, Total=5402 [2020-10-29 03:25:42,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-29 03:25:42,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2020-10-29 03:25:42,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-29 03:25:42,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2020-10-29 03:25:42,959 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 216 [2020-10-29 03:25:42,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:25:42,960 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2020-10-29 03:25:42,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-29 03:25:42,960 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2020-10-29 03:25:42,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-29 03:25:42,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:25:42,963 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 23, 23, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:25:42,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:25:42,964 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:25:42,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:25:42,964 INFO L82 PathProgramCache]: Analyzing trace with hash 643888883, now seen corresponding path program 24 times [2020-10-29 03:25:42,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:25:42,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258107911] [2020-10-29 03:25:42,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:25:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:42,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:43,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:43,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:43,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:47,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:47,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 03:25:47,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:25:47,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:25:47,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:47,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:25:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 03:25:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:25:47,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:48,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:25:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:48,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:48,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:48,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:25:48,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:25:48,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:25:48,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:48,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:48,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:25:48,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:25:48,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:25:48,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:48,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:25:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:48,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:48,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:48,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:48,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:25:48,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:48,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-29 03:25:48,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:48,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:48,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:25:48,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:25:48,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:25:48,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:49,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 03:25:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:49,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:49,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:49,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:49,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:25:49,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:49,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-29 03:25:49,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:49,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:49,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:25:49,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:25:49,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:25:49,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:49,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-29 03:25:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:49,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:49,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:50,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:50,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:25:50,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:50,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 03:25:50,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:50,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:50,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:25:50,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:25:50,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:25:50,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:50,049 INFO L134 CoverageAnalysis]: Checked inductivity of 5872 backedges. 1728 proven. 3985 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-29 03:25:50,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258107911] [2020-10-29 03:25:50,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:25:50,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-29 03:25:50,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336399661] [2020-10-29 03:25:50,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-29 03:25:50,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:25:50,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-29 03:25:50,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:25:50,052 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand 52 states. [2020-10-29 03:25:52,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:25:52,518 INFO L93 Difference]: Finished difference Result 237 states and 248 transitions. [2020-10-29 03:25:52,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-29 03:25:52,519 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 224 [2020-10-29 03:25:52,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:25:52,521 INFO L225 Difference]: With dead ends: 237 [2020-10-29 03:25:52,521 INFO L226 Difference]: Without dead ends: 126 [2020-10-29 03:25:52,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1377, Invalid=4475, Unknown=0, NotChecked=0, Total=5852 [2020-10-29 03:25:52,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-29 03:25:52,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2020-10-29 03:25:52,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-29 03:25:52,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 128 transitions. [2020-10-29 03:25:52,531 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 128 transitions. Word has length 224 [2020-10-29 03:25:52,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:25:52,531 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 128 transitions. [2020-10-29 03:25:52,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-29 03:25:52,532 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 128 transitions. [2020-10-29 03:25:52,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-29 03:25:52,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:25:52,533 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:25:52,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:25:52,533 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:25:52,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:25:52,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1801525041, now seen corresponding path program 25 times [2020-10-29 03:25:52,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:25:52,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395228097] [2020-10-29 03:25:52,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:25:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:52,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:52,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:52,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:57,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:57,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-29 03:25:57,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:25:57,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:25:57,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:57,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:57,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:25:57,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-29 03:25:57,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:25:57,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:58,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:25:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:58,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:58,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:58,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:25:58,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:25:58,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:25:58,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:58,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:58,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:25:58,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:25:58,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:25:58,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:58,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:25:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:58,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:58,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:58,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:58,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:25:58,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:58,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 03:25:58,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:58,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:25:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:25:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:25:58,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:59,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 03:25:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:59,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:59,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:59,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:59,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:25:59,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:59,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 03:25:59,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:59,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:59,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:25:59,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:25:59,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:25:59,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:59,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-29 03:25:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:59,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:59,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:59,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:59,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:25:59,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:59,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 03:25:59,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:59,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:59,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:25:59,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:25:59,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:25:59,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-29 03:25:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6366 backedges. 1875 proven. 4326 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-29 03:25:59,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395228097] [2020-10-29 03:25:59,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:25:59,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-29 03:25:59,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407832074] [2020-10-29 03:25:59,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-29 03:25:59,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:25:59,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-29 03:25:59,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=730, Invalid=2132, Unknown=0, NotChecked=0, Total=2862 [2020-10-29 03:25:59,740 INFO L87 Difference]: Start difference. First operand 124 states and 128 transitions. Second operand 54 states. [2020-10-29 03:26:02,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:26:02,256 INFO L93 Difference]: Finished difference Result 245 states and 256 transitions. [2020-10-29 03:26:02,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-29 03:26:02,257 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 232 [2020-10-29 03:26:02,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:26:02,258 INFO L225 Difference]: With dead ends: 245 [2020-10-29 03:26:02,259 INFO L226 Difference]: Without dead ends: 130 [2020-10-29 03:26:02,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1484, Invalid=4836, Unknown=0, NotChecked=0, Total=6320 [2020-10-29 03:26:02,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-29 03:26:02,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-10-29 03:26:02,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-29 03:26:02,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 132 transitions. [2020-10-29 03:26:02,269 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 132 transitions. Word has length 232 [2020-10-29 03:26:02,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:26:02,269 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 132 transitions. [2020-10-29 03:26:02,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-29 03:26:02,269 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 132 transitions. [2020-10-29 03:26:02,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-29 03:26:02,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:26:02,271 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 25, 25, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:26:02,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:26:02,272 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:26:02,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:26:02,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1833343573, now seen corresponding path program 26 times [2020-10-29 03:26:02,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:26:02,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836722102] [2020-10-29 03:26:02,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:26:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:02,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:02,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:02,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:02,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:07,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:07,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-29 03:26:07,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:26:07,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 03:26:07,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:07,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:26:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-29 03:26:07,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:26:07,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:26:07,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:26:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:07,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:07,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:07,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:26:07,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:26:07,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:26:07,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:07,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:07,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:26:07,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:26:07,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:26:07,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:26:07,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:26:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:07,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:07,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:08,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:08,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:26:08,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:26:08,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 03:26:08,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:08,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:26:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:26:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:26:08,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:26:09,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 03:26:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:09,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:09,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:09,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:09,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:26:09,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:26:09,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 03:26:09,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:09,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:09,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:26:09,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:26:09,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:26:09,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:26:09,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-29 03:26:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:09,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:09,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:09,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:09,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:26:09,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:26:09,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 03:26:09,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:09,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:26:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:26:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:26:09,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:26:09,683 INFO L134 CoverageAnalysis]: Checked inductivity of 6880 backedges. 2028 proven. 4681 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-29 03:26:09,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836722102] [2020-10-29 03:26:09,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:26:09,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-29 03:26:09,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710152400] [2020-10-29 03:26:09,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-29 03:26:09,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:26:09,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-29 03:26:09,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=785, Invalid=2295, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 03:26:09,686 INFO L87 Difference]: Start difference. First operand 128 states and 132 transitions. Second operand 56 states. [2020-10-29 03:26:12,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:26:12,424 INFO L93 Difference]: Finished difference Result 253 states and 264 transitions. [2020-10-29 03:26:12,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-29 03:26:12,425 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 240 [2020-10-29 03:26:12,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:26:12,426 INFO L225 Difference]: With dead ends: 253 [2020-10-29 03:26:12,427 INFO L226 Difference]: Without dead ends: 134 [2020-10-29 03:26:12,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1051 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1595, Invalid=5211, Unknown=0, NotChecked=0, Total=6806 [2020-10-29 03:26:12,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-29 03:26:12,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2020-10-29 03:26:12,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-29 03:26:12,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 136 transitions. [2020-10-29 03:26:12,437 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 136 transitions. Word has length 240 [2020-10-29 03:26:12,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:26:12,438 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 136 transitions. [2020-10-29 03:26:12,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-29 03:26:12,438 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 136 transitions. [2020-10-29 03:26:12,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-29 03:26:12,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:26:12,440 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 26, 26, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:26:12,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:26:12,440 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:26:12,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:26:12,441 INFO L82 PathProgramCache]: Analyzing trace with hash 182398343, now seen corresponding path program 27 times [2020-10-29 03:26:12,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:26:12,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971302456] [2020-10-29 03:26:12,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:26:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:12,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:12,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:12,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:12,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:17,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:17,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-29 03:26:17,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:26:17,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:26:17,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:17,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:17,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:26:17,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-29 03:26:17,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:26:17,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:26:18,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:26:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:18,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:18,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:18,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:26:18,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:26:18,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:26:18,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:18,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:18,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:26:18,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:26:18,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:26:18,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:26:18,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:26:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:18,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:18,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:18,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:18,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:26:18,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:26:18,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 03:26:18,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:18,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:18,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:26:18,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:26:18,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:26:18,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:26:19,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 03:26:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:19,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:19,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:19,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:19,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:26:19,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:26:19,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 03:26:19,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:19,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:19,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:26:19,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:26:19,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:26:19,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:26:19,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-29 03:26:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:19,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:19,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:19,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:19,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:26:19,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:26:19,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 03:26:19,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:19,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:26:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:26:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:26:19,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:26:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 7414 backedges. 2187 proven. 5050 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-29 03:26:19,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971302456] [2020-10-29 03:26:19,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:26:19,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-29 03:26:19,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235326738] [2020-10-29 03:26:19,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-29 03:26:19,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:26:19,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-29 03:26:19,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=842, Invalid=2464, Unknown=0, NotChecked=0, Total=3306 [2020-10-29 03:26:19,972 INFO L87 Difference]: Start difference. First operand 132 states and 136 transitions. Second operand 58 states. [2020-10-29 03:26:22,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:26:22,786 INFO L93 Difference]: Finished difference Result 261 states and 272 transitions. [2020-10-29 03:26:22,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-29 03:26:22,787 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 248 [2020-10-29 03:26:22,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:26:22,788 INFO L225 Difference]: With dead ends: 261 [2020-10-29 03:26:22,788 INFO L226 Difference]: Without dead ends: 138 [2020-10-29 03:26:22,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1710, Invalid=5600, Unknown=0, NotChecked=0, Total=7310 [2020-10-29 03:26:22,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-29 03:26:22,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-10-29 03:26:22,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-29 03:26:22,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 140 transitions. [2020-10-29 03:26:22,799 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 140 transitions. Word has length 248 [2020-10-29 03:26:22,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:26:22,799 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 140 transitions. [2020-10-29 03:26:22,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-29 03:26:22,799 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 140 transitions. [2020-10-29 03:26:22,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-29 03:26:22,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:26:22,801 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:26:22,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:26:22,801 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:26:22,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:26:22,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1336868963, now seen corresponding path program 28 times [2020-10-29 03:26:22,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:26:22,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053792307] [2020-10-29 03:26:22,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:26:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:22,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:22,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:22,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:22,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:27,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:27,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-29 03:26:27,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:26:27,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:26:27,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:27,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:27,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:26:27,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-29 03:26:27,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:26:27,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:26:28,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:26:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:28,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:28,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:28,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:26:28,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:26:28,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:26:28,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:28,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:28,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:26:28,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:26:28,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:26:28,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:26:28,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:26:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:28,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:28,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:28,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:28,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:26:28,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:26:28,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 03:26:28,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:28,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:26:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:26:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:26:28,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:26:30,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 03:26:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:30,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:30,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:30,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:30,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:26:30,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:26:30,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 03:26:30,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:30,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:26:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:26:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:26:30,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:26:30,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-29 03:26:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:30,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:30,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:30,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:30,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:26:30,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:26:30,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 03:26:30,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:30,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:30,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:26:30,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:26:30,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:26:30,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:26:30,520 INFO L134 CoverageAnalysis]: Checked inductivity of 7968 backedges. 2352 proven. 5433 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-29 03:26:30,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053792307] [2020-10-29 03:26:30,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:26:30,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-10-29 03:26:30,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118019852] [2020-10-29 03:26:30,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-29 03:26:30,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:26:30,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-29 03:26:30,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=901, Invalid=2639, Unknown=0, NotChecked=0, Total=3540 [2020-10-29 03:26:30,522 INFO L87 Difference]: Start difference. First operand 136 states and 140 transitions. Second operand 60 states. [2020-10-29 03:26:33,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:26:33,550 INFO L93 Difference]: Finished difference Result 269 states and 280 transitions. [2020-10-29 03:26:33,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-29 03:26:33,551 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 256 [2020-10-29 03:26:33,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:26:33,553 INFO L225 Difference]: With dead ends: 269 [2020-10-29 03:26:33,553 INFO L226 Difference]: Without dead ends: 142 [2020-10-29 03:26:33,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1216 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1829, Invalid=6003, Unknown=0, NotChecked=0, Total=7832 [2020-10-29 03:26:33,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-29 03:26:33,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-10-29 03:26:33,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-29 03:26:33,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 144 transitions. [2020-10-29 03:26:33,564 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 144 transitions. Word has length 256 [2020-10-29 03:26:33,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:26:33,564 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 144 transitions. [2020-10-29 03:26:33,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-29 03:26:33,564 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 144 transitions. [2020-10-29 03:26:33,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-29 03:26:33,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:26:33,566 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 28, 28, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:26:33,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:26:33,566 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:26:33,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:26:33,567 INFO L82 PathProgramCache]: Analyzing trace with hash 137862719, now seen corresponding path program 29 times [2020-10-29 03:26:33,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:26:33,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860198452] [2020-10-29 03:26:33,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:26:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:33,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:33,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:33,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:33,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:38,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:38,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-29 03:26:38,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:26:38,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:26:38,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:38,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:38,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:26:38,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-10-29 03:26:38,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:26:38,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:26:39,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:26:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:39,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:39,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:39,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:26:39,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:26:39,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:26:39,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:39,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:26:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:26:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:26:39,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:26:39,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:26:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:39,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:39,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking...