/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-examples/standard_compareModified_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:30:43,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:30:43,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:30:43,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:30:43,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:30:43,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:30:43,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:30:43,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:30:43,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:30:43,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:30:43,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:30:43,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:30:43,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:30:43,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:30:43,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:30:43,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:30:43,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:30:43,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:30:43,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:30:43,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:30:43,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:30:43,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:30:43,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:30:43,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:30:43,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:30:43,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:30:43,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:30:43,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:30:43,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:30:43,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:30:43,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:30:43,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:30:43,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:30:43,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:30:43,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:30:43,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:30:43,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:30:43,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:30:43,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:30:43,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:30:43,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:30:43,908 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 03:30:43,940 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:30:43,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:30:43,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:30:43,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:30:43,943 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:30:43,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:30:43,944 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:30:43,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:30:43,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:30:43,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:30:43,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:30:43,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:30:43,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:30:43,946 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:30:43,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:30:43,946 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:30:43,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:30:43,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:30:43,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:30:43,948 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:30:43,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:30:43,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:30:43,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:30:43,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:30:43,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:30:43,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:30:43,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:30:43,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:30:43,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:30:43,951 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:30:44,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:30:44,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:30:44,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:30:44,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:30:44,389 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:30:44,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_compareModified_ground.i [2020-10-29 03:30:44,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1270d110c/f9655cfafa964b40951ceb595bef3f25/FLAG295be9927 [2020-10-29 03:30:45,197 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:30:45,198 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_compareModified_ground.i [2020-10-29 03:30:45,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1270d110c/f9655cfafa964b40951ceb595bef3f25/FLAG295be9927 [2020-10-29 03:30:45,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1270d110c/f9655cfafa964b40951ceb595bef3f25 [2020-10-29 03:30:45,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:30:45,527 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:30:45,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:30:45,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:30:45,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:30:45,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:30:45" (1/1) ... [2020-10-29 03:30:45,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d9b0977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:45, skipping insertion in model container [2020-10-29 03:30:45,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:30:45" (1/1) ... [2020-10-29 03:30:45,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:30:45,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:30:45,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:30:45,800 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:30:45,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:30:45,872 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:30:45,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:45 WrapperNode [2020-10-29 03:30:45,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:30:45,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:30:45,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:30:45,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:30:45,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:45" (1/1) ... [2020-10-29 03:30:45,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:45" (1/1) ... [2020-10-29 03:30:45,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:45" (1/1) ... [2020-10-29 03:30:45,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:45" (1/1) ... [2020-10-29 03:30:45,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:45" (1/1) ... [2020-10-29 03:30:45,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:45" (1/1) ... [2020-10-29 03:30:45,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:45" (1/1) ... [2020-10-29 03:30:45,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:30:45,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:30:45,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:30:45,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:30:45,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:45" (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 03:30:46,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:30:46,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:30:46,037 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:30:46,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:30:46,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:30:46,037 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:30:46,038 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:30:46,038 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:30:46,038 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:30:46,038 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:30:46,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:30:46,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:30:46,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:30:46,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:30:46,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:30:46,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:30:46,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:30:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:30:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:30:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:30:46,686 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:30:46,687 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-29 03:30:46,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:30:46 BoogieIcfgContainer [2020-10-29 03:30:46,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:30:46,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:30:46,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:30:46,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:30:46,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:30:45" (1/3) ... [2020-10-29 03:30:46,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c0babb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:30:46, skipping insertion in model container [2020-10-29 03:30:46,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:45" (2/3) ... [2020-10-29 03:30:46,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c0babb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:30:46, skipping insertion in model container [2020-10-29 03:30:46,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:30:46" (3/3) ... [2020-10-29 03:30:46,708 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_compareModified_ground.i [2020-10-29 03:30:46,725 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:30:46,731 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:30:46,748 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:30:46,806 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:30:46,806 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:30:46,807 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:30:46,807 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:30:46,807 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:30:46,807 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:30:46,807 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:30:46,808 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:30:46,832 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-29 03:30:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 03:30:46,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:46,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:46,850 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:46,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:46,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1780932098, now seen corresponding path program 1 times [2020-10-29 03:30:46,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:46,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163368316] [2020-10-29 03:30:46,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:47,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:47,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:47,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:47,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 03:30:47,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:47,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-29 03:30:47,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:47,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:47,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:47,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:30:47,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:47,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:30:47,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:47,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:47,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:47,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:47,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:47,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 03:30:47,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:47,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:47,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:47,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:47,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:47,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:47,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163368316] [2020-10-29 03:30:47,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:30:47,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 03:30:47,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226792082] [2020-10-29 03:30:47,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 03:30:47,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:47,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 03:30:47,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 03:30:47,502 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-10-29 03:30:47,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:47,674 INFO L93 Difference]: Finished difference Result 65 states and 90 transitions. [2020-10-29 03:30:47,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 03:30:47,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-29 03:30:47,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:47,687 INFO L225 Difference]: With dead ends: 65 [2020-10-29 03:30:47,687 INFO L226 Difference]: Without dead ends: 30 [2020-10-29 03:30:47,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 03:30:47,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-29 03:30:47,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-29 03:30:47,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-29 03:30:47,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-10-29 03:30:47,744 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 17 [2020-10-29 03:30:47,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:47,745 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-10-29 03:30:47,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 03:30:47,745 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-10-29 03:30:47,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 03:30:47,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:47,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:47,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:30:47,748 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:47,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:47,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1839386919, now seen corresponding path program 1 times [2020-10-29 03:30:47,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:47,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242224018] [2020-10-29 03:30:47,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:47,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:47,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:48,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:48,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 03:30:48,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:48,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-29 03:30:48,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:48,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:48,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:30:48,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:48,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 03:30:48,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:48,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:48,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:48,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:48,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:48,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:48,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:30:48,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:48,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:48,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:48,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:48,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:48,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:48,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:48,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242224018] [2020-10-29 03:30:48,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:30:48,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:30:48,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036249685] [2020-10-29 03:30:48,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:30:48,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:48,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:30:48,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:30:48,128 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 4 states. [2020-10-29 03:30:48,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:48,298 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-10-29 03:30:48,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:30:48,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-29 03:30:48,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:48,300 INFO L225 Difference]: With dead ends: 52 [2020-10-29 03:30:48,301 INFO L226 Difference]: Without dead ends: 33 [2020-10-29 03:30:48,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:30:48,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-29 03:30:48,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-10-29 03:30:48,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 03:30:48,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-10-29 03:30:48,313 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 17 [2020-10-29 03:30:48,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:48,313 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-10-29 03:30:48,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:30:48,314 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-10-29 03:30:48,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 03:30:48,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:48,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:48,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:30:48,316 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:48,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:48,317 INFO L82 PathProgramCache]: Analyzing trace with hash -195365807, now seen corresponding path program 1 times [2020-10-29 03:30:48,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:48,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890920746] [2020-10-29 03:30:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:48,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:48,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:48,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:48,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:48,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:30:48,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:30:48,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-29 03:30:48,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:48,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:30:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:30:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 03:30:48,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:48,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:48,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:48,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:48,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:48,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:48,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 03:30:48,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:48,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:48,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:48,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:48,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:48,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:48,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890920746] [2020-10-29 03:30:48,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:30:48,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:30:48,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585820508] [2020-10-29 03:30:48,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:30:48,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:48,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:30:48,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:30:48,829 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 4 states. [2020-10-29 03:30:49,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:49,031 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2020-10-29 03:30:49,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:30:49,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-29 03:30:49,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:49,034 INFO L225 Difference]: With dead ends: 58 [2020-10-29 03:30:49,034 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 03:30:49,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:30:49,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 03:30:49,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-10-29 03:30:49,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-29 03:30:49,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-10-29 03:30:49,047 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 20 [2020-10-29 03:30:49,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:49,050 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-10-29 03:30:49,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:30:49,050 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-10-29 03:30:49,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 03:30:49,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:49,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:49,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:30:49,052 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:49,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:49,056 INFO L82 PathProgramCache]: Analyzing trace with hash 62799631, now seen corresponding path program 1 times [2020-10-29 03:30:49,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:49,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986244379] [2020-10-29 03:30:49,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:49,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:49,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:49,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:49,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:49,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:30:49,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:30:49,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 658 [2020-10-29 03:30:49,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:49,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:49,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:30:49,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:49,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:30:49,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:50,206 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2020-10-29 03:30:50,335 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2020-10-29 03:30:50,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:50,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:50,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:50,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:50,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:50,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:30:50,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:50,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:50,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:50,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:50,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986244379] [2020-10-29 03:30:50,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:50,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:30:50,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054147363] [2020-10-29 03:30:50,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:30:50,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:50,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:30:50,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:30:50,544 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 11 states. [2020-10-29 03:30:51,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:51,017 INFO L93 Difference]: Finished difference Result 79 states and 98 transitions. [2020-10-29 03:30:51,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:30:51,018 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2020-10-29 03:30:51,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:51,021 INFO L225 Difference]: With dead ends: 79 [2020-10-29 03:30:51,021 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:30:51,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:30:51,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:30:51,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2020-10-29 03:30:51,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 03:30:51,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2020-10-29 03:30:51,034 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 20 [2020-10-29 03:30:51,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:51,034 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2020-10-29 03:30:51,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:30:51,034 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2020-10-29 03:30:51,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 03:30:51,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:51,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:51,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:30:51,036 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:51,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:51,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1663513466, now seen corresponding path program 1 times [2020-10-29 03:30:51,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:51,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643093844] [2020-10-29 03:30:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:51,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:51,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:51,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:51,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:51,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 03:30:51,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:30:51,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-29 03:30:51,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:51,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:30:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 03:30:51,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:51,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:51,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:51,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:51,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:51,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:51,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:51,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:51,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:51,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:51,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:51,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:51,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:51,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:51,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643093844] [2020-10-29 03:30:51,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:51,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:30:51,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546349563] [2020-10-29 03:30:51,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:30:51,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:51,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:30:51,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:30:51,550 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand 9 states. [2020-10-29 03:30:51,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:51,905 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2020-10-29 03:30:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:30:51,907 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-29 03:30:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:51,910 INFO L225 Difference]: With dead ends: 65 [2020-10-29 03:30:51,910 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 03:30:51,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:30:51,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 03:30:51,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2020-10-29 03:30:51,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 03:30:51,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2020-10-29 03:30:51,922 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 21 [2020-10-29 03:30:51,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:51,923 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2020-10-29 03:30:51,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:30:51,923 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2020-10-29 03:30:51,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 03:30:51,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:51,924 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:51,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:30:51,924 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:51,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:51,925 INFO L82 PathProgramCache]: Analyzing trace with hash 632891431, now seen corresponding path program 2 times [2020-10-29 03:30:51,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:51,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936725903] [2020-10-29 03:30:51,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:51,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:51,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:51,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:52,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:52,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 03:30:52,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:30:52,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-29 03:30:52,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:52,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:30:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 03:30:52,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:52,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:52,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:52,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:52,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:52,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:52,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:30:52,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:52,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:52,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:52,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:52,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:52,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:30:52,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:52,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936725903] [2020-10-29 03:30:52,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:52,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:30:52,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670825342] [2020-10-29 03:30:52,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:30:52,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:52,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:30:52,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:30:52,962 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand 12 states. [2020-10-29 03:30:53,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:53,610 INFO L93 Difference]: Finished difference Result 105 states and 126 transitions. [2020-10-29 03:30:53,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:30:53,612 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-29 03:30:53,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:53,614 INFO L225 Difference]: With dead ends: 105 [2020-10-29 03:30:53,614 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 03:30:53,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:30:53,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 03:30:53,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 48. [2020-10-29 03:30:53,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 03:30:53,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-10-29 03:30:53,640 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 23 [2020-10-29 03:30:53,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:53,642 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-10-29 03:30:53,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:30:53,642 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-10-29 03:30:53,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:30:53,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:53,646 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:53,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:30:53,646 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:53,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:53,647 INFO L82 PathProgramCache]: Analyzing trace with hash 235032054, now seen corresponding path program 1 times [2020-10-29 03:30:53,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:53,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855375305] [2020-10-29 03:30:53,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:53,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:53,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:53,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:53,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:30:53,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:53,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 03:30:53,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:53,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:30:53,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:53,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:30:53,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:53,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:53,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:53,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:53,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:53,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:53,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:30:53,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:53,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:53,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:53,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:53,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:53,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:53,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 03:30:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:53,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:53,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:53,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:30:53,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:53,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:30:53,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:53,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:53,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:53,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:30:53,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:53,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:53,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:30:53,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855375305] [2020-10-29 03:30:53,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:53,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:30:53,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688311639] [2020-10-29 03:30:53,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:30:53,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:53,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:30:53,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:30:53,857 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2020-10-29 03:30:53,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:53,978 INFO L93 Difference]: Finished difference Result 90 states and 106 transitions. [2020-10-29 03:30:53,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:30:53,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-29 03:30:53,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:53,979 INFO L225 Difference]: With dead ends: 90 [2020-10-29 03:30:53,980 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 03:30:53,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:30:53,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 03:30:53,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2020-10-29 03:30:53,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 03:30:53,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-10-29 03:30:53,999 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 28 [2020-10-29 03:30:53,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:54,000 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-10-29 03:30:54,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:30:54,000 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-10-29 03:30:54,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 03:30:54,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:54,004 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:54,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:30:54,005 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:54,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:54,006 INFO L82 PathProgramCache]: Analyzing trace with hash -982606066, now seen corresponding path program 2 times [2020-10-29 03:30:54,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:54,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346411371] [2020-10-29 03:30:54,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:54,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:54,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:54,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:54,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:54,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 03:30:54,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:30:54,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 555 [2020-10-29 03:30:54,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:54,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:54,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:30:54,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:54,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:30:54,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:30:55,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:55,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:55,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:55,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:55,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:55,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:55,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:55,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:55,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:55,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:55,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:55,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:55,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 03:30:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:55,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:55,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:55,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:30:55,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:55,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 03:30:55,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:55,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:55,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:30:55,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:55,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:30:55,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:55,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:55,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346411371] [2020-10-29 03:30:55,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:55,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:30:55,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163966586] [2020-10-29 03:30:55,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:30:55,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:55,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:30:55,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:30:55,170 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 13 states. [2020-10-29 03:30:56,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:56,134 INFO L93 Difference]: Finished difference Result 96 states and 118 transitions. [2020-10-29 03:30:56,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:30:56,143 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-10-29 03:30:56,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:56,144 INFO L225 Difference]: With dead ends: 96 [2020-10-29 03:30:56,144 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 03:30:56,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:30:56,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 03:30:56,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 68. [2020-10-29 03:30:56,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-29 03:30:56,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2020-10-29 03:30:56,165 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 31 [2020-10-29 03:30:56,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:56,166 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2020-10-29 03:30:56,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:30:56,166 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2020-10-29 03:30:56,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 03:30:56,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:56,171 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:56,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:30:56,171 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:56,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:56,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1476899718, now seen corresponding path program 1 times [2020-10-29 03:30:56,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:56,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28285460] [2020-10-29 03:30:56,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:56,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:56,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:56,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:56,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:56,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:30:56,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:30:56,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 553 [2020-10-29 03:30:56,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:56,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:56,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:30:56,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:56,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:30:56,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:57,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:57,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:57,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:57,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:57,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:57,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:30:57,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:57,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:57,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:57,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:57,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:57,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:57,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 03:30:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:57,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:57,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:57,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:30:57,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:57,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:30:57,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:57,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:30:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:30:57,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:57,061 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:57,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28285460] [2020-10-29 03:30:57,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:57,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:30:57,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742234208] [2020-10-29 03:30:57,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:30:57,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:57,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:30:57,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:30:57,071 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand 11 states. [2020-10-29 03:30:57,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:57,609 INFO L93 Difference]: Finished difference Result 91 states and 108 transitions. [2020-10-29 03:30:57,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:30:57,609 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-29 03:30:57,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:57,611 INFO L225 Difference]: With dead ends: 91 [2020-10-29 03:30:57,611 INFO L226 Difference]: Without dead ends: 87 [2020-10-29 03:30:57,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:30:57,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-29 03:30:57,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2020-10-29 03:30:57,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-29 03:30:57,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2020-10-29 03:30:57,640 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 32 [2020-10-29 03:30:57,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:57,640 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2020-10-29 03:30:57,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:30:57,641 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2020-10-29 03:30:57,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 03:30:57,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:57,645 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:57,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:30:57,645 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:57,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:57,646 INFO L82 PathProgramCache]: Analyzing trace with hash -346056970, now seen corresponding path program 3 times [2020-10-29 03:30:57,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:57,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855560738] [2020-10-29 03:30:57,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:57,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:57,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:57,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:58,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:58,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:30:58,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:30:58,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-10-29 03:30:58,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:58,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:58,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:30:58,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:58,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:30:58,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:30:59,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:59,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:59,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:59,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:59,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:59,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:59,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:59,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:59,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:59,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:59,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:59,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:59,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:30:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:59,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:59,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:59,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:30:59,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:59,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:59,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:59,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:59,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:30:59,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:30:59,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:59,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855560738] [2020-10-29 03:30:59,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:59,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:30:59,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37512788] [2020-10-29 03:30:59,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:30:59,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:59,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:30:59,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:30:59,065 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand 14 states. [2020-10-29 03:30:59,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:59,786 INFO L93 Difference]: Finished difference Result 112 states and 133 transitions. [2020-10-29 03:30:59,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:30:59,786 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-10-29 03:30:59,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:59,788 INFO L225 Difference]: With dead ends: 112 [2020-10-29 03:30:59,790 INFO L226 Difference]: Without dead ends: 108 [2020-10-29 03:30:59,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:30:59,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-29 03:30:59,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 69. [2020-10-29 03:30:59,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 03:30:59,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2020-10-29 03:30:59,813 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 34 [2020-10-29 03:30:59,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:59,814 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2020-10-29 03:30:59,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:30:59,814 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2020-10-29 03:30:59,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 03:30:59,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:59,826 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:59,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:30:59,827 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:59,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:59,828 INFO L82 PathProgramCache]: Analyzing trace with hash 890126069, now seen corresponding path program 4 times [2020-10-29 03:30:59,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:59,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182822697] [2020-10-29 03:30:59,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:59,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:59,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:59,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:59,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 03:30:59,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:59,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 03:30:59,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:59,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:59,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:30:59,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:59,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 03:30:59,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:00,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:00,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:00,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:00,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:00,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:00,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:00,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:00,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:00,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:00,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:00,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:00,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:00,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 03:31:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:00,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:00,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:00,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:00,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:00,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:00,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:00,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:00,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:00,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:31:00,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:00,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:00,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:31:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:00,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:00,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:00,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:00,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:00,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:00,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:00,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:00,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:00,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:31:00,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:00,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:00,043 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:31:00,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182822697] [2020-10-29 03:31:00,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:00,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:31:00,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929708935] [2020-10-29 03:31:00,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:31:00,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:00,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:31:00,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:31:00,047 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 6 states. [2020-10-29 03:31:00,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:00,152 INFO L93 Difference]: Finished difference Result 128 states and 148 transitions. [2020-10-29 03:31:00,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:31:00,152 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-10-29 03:31:00,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:00,153 INFO L225 Difference]: With dead ends: 128 [2020-10-29 03:31:00,154 INFO L226 Difference]: Without dead ends: 79 [2020-10-29 03:31:00,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:31:00,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-29 03:31:00,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2020-10-29 03:31:00,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 03:31:00,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2020-10-29 03:31:00,186 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 39 [2020-10-29 03:31:00,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:00,186 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2020-10-29 03:31:00,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:31:00,187 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2020-10-29 03:31:00,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 03:31:00,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:00,188 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:00,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:31:00,188 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:00,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:00,189 INFO L82 PathProgramCache]: Analyzing trace with hash -803418403, now seen corresponding path program 5 times [2020-10-29 03:31:00,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:00,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195119117] [2020-10-29 03:31:00,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:00,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:00,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:00,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:00,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:00,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:31:00,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:31:00,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 761 [2020-10-29 03:31:00,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:00,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:00,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:31:00,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:00,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:31:00,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:01,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:01,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:01,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:01,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:01,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:01,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:01,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:01,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:01,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:01,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:01,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:01,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:01,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:31:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:01,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:01,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:01,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:01,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:01,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:01,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:01,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:01,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:01,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:01,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:01,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:01,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 03:31:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:01,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:01,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:01,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:01,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:01,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:01,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:01,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:01,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:01,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:01,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:01,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:01,731 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:31:01,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195119117] [2020-10-29 03:31:01,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:01,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:31:01,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988694434] [2020-10-29 03:31:01,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:31:01,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:01,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:31:01,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:31:01,734 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand 15 states. [2020-10-29 03:31:02,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:02,583 INFO L93 Difference]: Finished difference Result 133 states and 162 transitions. [2020-10-29 03:31:02,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:31:02,583 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-10-29 03:31:02,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:02,586 INFO L225 Difference]: With dead ends: 133 [2020-10-29 03:31:02,586 INFO L226 Difference]: Without dead ends: 129 [2020-10-29 03:31:02,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:31:02,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-29 03:31:02,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 94. [2020-10-29 03:31:02,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-29 03:31:02,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 113 transitions. [2020-10-29 03:31:02,617 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 113 transitions. Word has length 42 [2020-10-29 03:31:02,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:02,618 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 113 transitions. [2020-10-29 03:31:02,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:31:02,618 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 113 transitions. [2020-10-29 03:31:02,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 03:31:02,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:02,619 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:02,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:31:02,619 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:02,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:02,620 INFO L82 PathProgramCache]: Analyzing trace with hash -2141793294, now seen corresponding path program 2 times [2020-10-29 03:31:02,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:02,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850003197] [2020-10-29 03:31:02,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:02,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:02,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:02,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:03,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:03,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 03:31:03,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:31:03,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 782 [2020-10-29 03:31:03,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:03,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:31:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 03:31:03,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:03,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:03,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:03,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:03,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:03,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:03,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:03,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:03,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:03,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:03,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:03,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:03,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:03,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 03:31:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:03,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:03,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:03,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:03,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:03,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:03,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:03,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:03,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:03,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 03:31:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:03,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:03,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:03,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:03,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:03,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:03,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:03,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:03,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:03,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:03,793 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:31:03,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850003197] [2020-10-29 03:31:03,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:03,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:31:03,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394322617] [2020-10-29 03:31:03,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:31:03,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:03,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:31:03,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:31:03,798 INFO L87 Difference]: Start difference. First operand 94 states and 113 transitions. Second operand 13 states. [2020-10-29 03:31:04,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:04,537 INFO L93 Difference]: Finished difference Result 118 states and 140 transitions. [2020-10-29 03:31:04,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:31:04,539 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-10-29 03:31:04,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:04,544 INFO L225 Difference]: With dead ends: 118 [2020-10-29 03:31:04,544 INFO L226 Difference]: Without dead ends: 114 [2020-10-29 03:31:04,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:31:04,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-29 03:31:04,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2020-10-29 03:31:04,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-29 03:31:04,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 121 transitions. [2020-10-29 03:31:04,564 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 121 transitions. Word has length 43 [2020-10-29 03:31:04,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:04,565 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 121 transitions. [2020-10-29 03:31:04,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:31:04,565 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 121 transitions. [2020-10-29 03:31:04,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 03:31:04,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:04,566 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:04,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:31:04,567 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:04,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:04,567 INFO L82 PathProgramCache]: Analyzing trace with hash -205957643, now seen corresponding path program 6 times [2020-10-29 03:31:04,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:04,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517817225] [2020-10-29 03:31:04,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:04,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:04,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:04,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:05,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:05,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 03:31:05,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:31:05,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 850 [2020-10-29 03:31:05,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:05,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:31:05,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:05,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 03:31:05,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:05,661 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 30 [2020-10-29 03:31:05,781 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2020-10-29 03:31:05,904 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 33 [2020-10-29 03:31:06,058 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 46 [2020-10-29 03:31:06,199 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2020-10-29 03:31:06,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:06,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:06,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:06,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:06,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:06,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:06,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:06,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:06,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:06,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:06,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:06,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:06,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:31:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:06,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:06,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:06,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:06,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:06,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:31:06,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:06,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:06,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:06,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:06,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:06,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:06,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:31:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:06,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:06,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:06,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:06,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:06,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:06,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:06,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:06,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:06,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:06,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:06,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:31:06,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517817225] [2020-10-29 03:31:06,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:06,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:31:06,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521540870] [2020-10-29 03:31:06,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:31:06,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:06,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:31:06,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:31:06,663 INFO L87 Difference]: Start difference. First operand 102 states and 121 transitions. Second operand 16 states. [2020-10-29 03:31:06,999 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-29 03:31:07,303 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-29 03:31:08,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:08,304 INFO L93 Difference]: Finished difference Result 146 states and 175 transitions. [2020-10-29 03:31:08,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:31:08,304 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-29 03:31:08,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:08,306 INFO L225 Difference]: With dead ends: 146 [2020-10-29 03:31:08,306 INFO L226 Difference]: Without dead ends: 142 [2020-10-29 03:31:08,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:31:08,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-29 03:31:08,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 91. [2020-10-29 03:31:08,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 03:31:08,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 104 transitions. [2020-10-29 03:31:08,329 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 104 transitions. Word has length 45 [2020-10-29 03:31:08,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:08,329 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 104 transitions. [2020-10-29 03:31:08,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:31:08,329 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 104 transitions. [2020-10-29 03:31:08,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 03:31:08,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:08,330 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:08,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:31:08,331 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:08,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:08,331 INFO L82 PathProgramCache]: Analyzing trace with hash 628305860, now seen corresponding path program 7 times [2020-10-29 03:31:08,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:08,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773482193] [2020-10-29 03:31:08,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:08,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:08,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:08,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:08,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:31:08,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:08,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-29 03:31:08,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:08,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:08,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:31:08,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:08,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:31:08,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:08,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:08,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:08,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:08,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:08,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:08,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:08,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:08,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:08,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:08,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:08,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:08,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:08,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:31:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:08,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:08,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:08,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:08,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:08,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:08,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:08,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:08,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:08,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:31:08,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:08,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:08,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 03:31:08,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:08,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:08,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:08,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:08,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:08,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:08,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:08,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:08,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:08,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:31:08,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:08,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:08,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:31:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:08,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:08,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:08,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:08,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:08,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:08,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:08,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:08,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:08,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:31:08,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:08,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-29 03:31:08,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773482193] [2020-10-29 03:31:08,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:08,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:31:08,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885338513] [2020-10-29 03:31:08,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:31:08,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:08,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:31:08,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:31:08,656 INFO L87 Difference]: Start difference. First operand 91 states and 104 transitions. Second operand 7 states. [2020-10-29 03:31:08,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:08,767 INFO L93 Difference]: Finished difference Result 166 states and 190 transitions. [2020-10-29 03:31:08,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:31:08,767 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-29 03:31:08,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:08,769 INFO L225 Difference]: With dead ends: 166 [2020-10-29 03:31:08,769 INFO L226 Difference]: Without dead ends: 101 [2020-10-29 03:31:08,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:31:08,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-29 03:31:08,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2020-10-29 03:31:08,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-29 03:31:08,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 112 transitions. [2020-10-29 03:31:08,782 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 112 transitions. Word has length 50 [2020-10-29 03:31:08,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:08,782 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 112 transitions. [2020-10-29 03:31:08,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:31:08,783 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 112 transitions. [2020-10-29 03:31:08,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 03:31:08,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:08,784 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:08,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:31:08,784 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:08,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:08,784 INFO L82 PathProgramCache]: Analyzing trace with hash -368894244, now seen corresponding path program 8 times [2020-10-29 03:31:08,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:08,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232164530] [2020-10-29 03:31:08,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:08,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:08,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:09,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:09,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:09,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 03:31:09,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:31:09,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 756 [2020-10-29 03:31:09,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:09,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:09,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:31:09,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:09,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 03:31:09,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:10,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:10,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:10,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:10,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:10,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:10,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:10,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:10,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:10,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:10,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:10,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:10,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:10,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:31:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:10,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:10,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:10,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:10,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:10,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:10,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:10,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:10,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:10,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:31:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:10,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:10,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:10,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:10,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:10,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:10,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:10,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:10,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:10,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:10,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:10,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:10,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:31:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:10,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:10,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:10,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:10,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:10,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:10,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:10,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:10,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:10,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:10,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:10,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:10,519 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:31:10,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232164530] [2020-10-29 03:31:10,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:10,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:31:10,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848116519] [2020-10-29 03:31:10,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:31:10,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:10,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:31:10,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:31:10,524 INFO L87 Difference]: Start difference. First operand 97 states and 112 transitions. Second operand 17 states. [2020-10-29 03:31:11,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:11,887 INFO L93 Difference]: Finished difference Result 158 states and 192 transitions. [2020-10-29 03:31:11,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:31:11,891 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 53 [2020-10-29 03:31:11,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:11,895 INFO L225 Difference]: With dead ends: 158 [2020-10-29 03:31:11,896 INFO L226 Difference]: Without dead ends: 154 [2020-10-29 03:31:11,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:31:11,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-29 03:31:11,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 120. [2020-10-29 03:31:11,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-29 03:31:11,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 144 transitions. [2020-10-29 03:31:11,915 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 144 transitions. Word has length 53 [2020-10-29 03:31:11,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:11,916 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 144 transitions. [2020-10-29 03:31:11,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:31:11,916 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 144 transitions. [2020-10-29 03:31:11,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 03:31:11,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:11,917 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:11,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:31:11,917 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:11,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:11,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1708241778, now seen corresponding path program 3 times [2020-10-29 03:31:11,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:11,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551443841] [2020-10-29 03:31:11,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:11,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:11,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:12,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:12,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:12,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:31:12,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:31:12,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-10-29 03:31:12,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:12,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:12,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:31:12,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:12,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:31:12,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:13,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:13,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:13,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:13,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:13,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:13,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:31:13,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:13,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:13,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:13,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:13,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:13,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:13,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:31:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:13,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:13,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:13,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:13,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:13,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:13,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:13,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:13,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:13,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:13,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:31:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:13,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:13,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:13,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:13,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:13,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:13,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:13,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:13,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:13,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:13,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:13,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:13,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:31:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:13,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:13,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:13,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:13,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:13,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:13,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:13,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:13,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:13,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:13,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:13,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:13,062 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:31:13,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551443841] [2020-10-29 03:31:13,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:13,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:31:13,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998656766] [2020-10-29 03:31:13,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:31:13,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:13,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:31:13,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:31:13,064 INFO L87 Difference]: Start difference. First operand 120 states and 144 transitions. Second operand 15 states. [2020-10-29 03:31:14,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:14,063 INFO L93 Difference]: Finished difference Result 145 states and 172 transitions. [2020-10-29 03:31:14,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:31:14,063 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-10-29 03:31:14,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:14,064 INFO L225 Difference]: With dead ends: 145 [2020-10-29 03:31:14,064 INFO L226 Difference]: Without dead ends: 141 [2020-10-29 03:31:14,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:31:14,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-29 03:31:14,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 128. [2020-10-29 03:31:14,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-29 03:31:14,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 152 transitions. [2020-10-29 03:31:14,083 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 152 transitions. Word has length 54 [2020-10-29 03:31:14,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:14,083 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 152 transitions. [2020-10-29 03:31:14,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:31:14,083 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 152 transitions. [2020-10-29 03:31:14,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 03:31:14,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:14,084 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:14,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:31:14,085 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:14,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:14,085 INFO L82 PathProgramCache]: Analyzing trace with hash 331593924, now seen corresponding path program 9 times [2020-10-29 03:31:14,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:14,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608909687] [2020-10-29 03:31:14,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:14,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:14,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:14,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:14,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:14,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:31:14,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:31:14,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 748 [2020-10-29 03:31:14,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:14,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:14,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:31:14,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:14,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:31:14,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:15,380 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2020-10-29 03:31:16,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:16,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:16,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:16,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:16,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:16,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:16,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:16,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:16,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:16,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:16,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 03:31:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:16,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:16,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:16,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:16,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:16,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:16,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:16,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:16,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:16,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:16,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 03:31:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:16,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:16,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:16,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:16,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:16,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:16,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:16,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:16,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:16,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:16,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:16,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:16,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 03:31:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:16,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:16,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:16,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:16,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:16,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:16,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:16,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:16,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:16,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:16,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:16,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:16,117 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 53 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:31:16,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608909687] [2020-10-29 03:31:16,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:16,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:31:16,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074757171] [2020-10-29 03:31:16,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:31:16,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:16,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:31:16,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:31:16,119 INFO L87 Difference]: Start difference. First operand 128 states and 152 transitions. Second operand 18 states. [2020-10-29 03:31:17,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:17,580 INFO L93 Difference]: Finished difference Result 196 states and 236 transitions. [2020-10-29 03:31:17,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:31:17,581 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 56 [2020-10-29 03:31:17,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:17,585 INFO L225 Difference]: With dead ends: 196 [2020-10-29 03:31:17,586 INFO L226 Difference]: Without dead ends: 192 [2020-10-29 03:31:17,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:31:17,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-29 03:31:17,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 113. [2020-10-29 03:31:17,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-29 03:31:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2020-10-29 03:31:17,603 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 56 [2020-10-29 03:31:17,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:17,604 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2020-10-29 03:31:17,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:31:17,604 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2020-10-29 03:31:17,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 03:31:17,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:17,605 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:17,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:31:17,605 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:17,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:17,606 INFO L82 PathProgramCache]: Analyzing trace with hash -943386429, now seen corresponding path program 10 times [2020-10-29 03:31:17,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:17,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461016101] [2020-10-29 03:31:17,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:17,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:17,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:17,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:17,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 03:31:17,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:17,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-29 03:31:17,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:17,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:17,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:31:17,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:17,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 03:31:17,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:17,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:17,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:18,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:18,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:18,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:18,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:18,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:18,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:18,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:18,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:31:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:18,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:18,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:18,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:18,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:18,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:18,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:18,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:31:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:18,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:18,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:31:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:18,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:18,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:18,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:18,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:18,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:18,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:18,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:18,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:18,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:31:18,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:18,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:18,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:31:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:18,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:18,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:18,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:18,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:18,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:18,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:18,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:18,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:18,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:31:18,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:18,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:18,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:31:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:18,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:18,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:18,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:18,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:18,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:18,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:18,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:18,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:18,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:31:18,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:18,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:18,029 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-29 03:31:18,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461016101] [2020-10-29 03:31:18,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:18,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:31:18,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077764809] [2020-10-29 03:31:18,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:31:18,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:18,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:31:18,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:31:18,031 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand 8 states. [2020-10-29 03:31:18,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:18,159 INFO L93 Difference]: Finished difference Result 204 states and 232 transitions. [2020-10-29 03:31:18,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:31:18,160 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-10-29 03:31:18,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:18,161 INFO L225 Difference]: With dead ends: 204 [2020-10-29 03:31:18,162 INFO L226 Difference]: Without dead ends: 123 [2020-10-29 03:31:18,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:31:18,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-29 03:31:18,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2020-10-29 03:31:18,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-29 03:31:18,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2020-10-29 03:31:18,186 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 61 [2020-10-29 03:31:18,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:18,186 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2020-10-29 03:31:18,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:31:18,186 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2020-10-29 03:31:18,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 03:31:18,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:18,187 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:18,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:31:18,187 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:18,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:18,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1977696939, now seen corresponding path program 11 times [2020-10-29 03:31:18,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:18,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343869873] [2020-10-29 03:31:18,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:18,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:18,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:18,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:19,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:19,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 03:31:19,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:31:19,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 849 [2020-10-29 03:31:19,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:19,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:19,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:31:19,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:19,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 03:31:19,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:19,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:19,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:19,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:19,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:19,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:19,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:19,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:19,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:19,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:19,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:19,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:19,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:19,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 03:31:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:19,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:19,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:19,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:19,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:19,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:19,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:19,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:19,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:19,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:19,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:19,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:20,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 03:31:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:20,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:20,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:20,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:20,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:20,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:20,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:20,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:20,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:20,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:20,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:20,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:20,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 03:31:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:20,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:20,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:20,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:20,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:20,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:20,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:20,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:20,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:20,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:20,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:20,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:20,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:31:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:20,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:20,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:20,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:20,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:20,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:20,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:20,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:20,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:20,054 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 8 proven. 67 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 03:31:20,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343869873] [2020-10-29 03:31:20,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:20,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:31:20,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054839434] [2020-10-29 03:31:20,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:31:20,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:20,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:31:20,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:31:20,057 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 19 states. [2020-10-29 03:31:21,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:21,563 INFO L93 Difference]: Finished difference Result 195 states and 236 transitions. [2020-10-29 03:31:21,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:31:21,564 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 64 [2020-10-29 03:31:21,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:21,565 INFO L225 Difference]: With dead ends: 195 [2020-10-29 03:31:21,566 INFO L226 Difference]: Without dead ends: 191 [2020-10-29 03:31:21,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:31:21,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-29 03:31:21,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 146. [2020-10-29 03:31:21,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-29 03:31:21,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 175 transitions. [2020-10-29 03:31:21,589 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 175 transitions. Word has length 64 [2020-10-29 03:31:21,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:21,589 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 175 transitions. [2020-10-29 03:31:21,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:31:21,589 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 175 transitions. [2020-10-29 03:31:21,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 03:31:21,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:21,591 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:21,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:31:21,591 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:21,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:21,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1610101598, now seen corresponding path program 4 times [2020-10-29 03:31:21,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:21,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109780267] [2020-10-29 03:31:21,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:21,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:21,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:21,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:22,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:22,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 03:31:22,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:31:22,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 630 [2020-10-29 03:31:22,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:22,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:31:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 03:31:22,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:22,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:22,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:22,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:22,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:22,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:22,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:22,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:22,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:22,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:22,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:22,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:22,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:22,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:31:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:22,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:22,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:22,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:22,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:22,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:22,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:22,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:22,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:22,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:22,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:22,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:22,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:31:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:22,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:22,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:22,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:22,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:22,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:22,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:22,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:22,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:22,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:22,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:22,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:22,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:31:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:22,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:22,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:22,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:22,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:22,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:22,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:22,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:22,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:22,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:22,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:22,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:22,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:31:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:22,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:22,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:22,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:22,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:22,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:22,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:22,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:22,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 8 proven. 67 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 03:31:22,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109780267] [2020-10-29 03:31:22,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:22,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:31:22,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182885286] [2020-10-29 03:31:22,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:31:22,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:22,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:31:22,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:31:22,831 INFO L87 Difference]: Start difference. First operand 146 states and 175 transitions. Second operand 17 states. [2020-10-29 03:31:24,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:24,085 INFO L93 Difference]: Finished difference Result 172 states and 204 transitions. [2020-10-29 03:31:24,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:31:24,086 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2020-10-29 03:31:24,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:24,087 INFO L225 Difference]: With dead ends: 172 [2020-10-29 03:31:24,087 INFO L226 Difference]: Without dead ends: 168 [2020-10-29 03:31:24,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:31:24,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-29 03:31:24,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 154. [2020-10-29 03:31:24,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-29 03:31:24,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 183 transitions. [2020-10-29 03:31:24,109 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 183 transitions. Word has length 65 [2020-10-29 03:31:24,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:24,110 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 183 transitions. [2020-10-29 03:31:24,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:31:24,110 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 183 transitions. [2020-10-29 03:31:24,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 03:31:24,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:24,111 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:24,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:31:24,112 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:24,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:24,112 INFO L82 PathProgramCache]: Analyzing trace with hash -655038525, now seen corresponding path program 12 times [2020-10-29 03:31:24,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:24,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846388579] [2020-10-29 03:31:24,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:24,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:24,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:24,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:25,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:25,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 03:31:25,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:31:25,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1036 [2020-10-29 03:31:25,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:25,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:25,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:31:25,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:25,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 03:31:25,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:25,795 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-29 03:31:25,939 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-10-29 03:31:26,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:26,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:26,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:26,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:26,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:26,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:26,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:26,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:26,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:26,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 03:31:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:26,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:26,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:26,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:26,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:26,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:26,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:26,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:26,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:26,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:26,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:26,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:26,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 03:31:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:26,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:26,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:26,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:26,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:26,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:26,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:26,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:26,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:26,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:26,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:26,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:26,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 03:31:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:26,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:26,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:26,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:26,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:26,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:26,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:26,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:26,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:26,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:26,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:26,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:26,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 03:31:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:26,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:26,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:26,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:26,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:26,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:26,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:26,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:26,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:26,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:26,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:26,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:26,596 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 8 proven. 83 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 03:31:26,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846388579] [2020-10-29 03:31:26,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:26,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:31:26,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241083843] [2020-10-29 03:31:26,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:31:26,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:26,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:31:26,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:31:26,599 INFO L87 Difference]: Start difference. First operand 154 states and 183 transitions. Second operand 20 states. [2020-10-29 03:31:27,452 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-10-29 03:31:27,624 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-29 03:31:29,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:29,286 INFO L93 Difference]: Finished difference Result 208 states and 249 transitions. [2020-10-29 03:31:29,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:31:29,294 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-10-29 03:31:29,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:29,296 INFO L225 Difference]: With dead ends: 208 [2020-10-29 03:31:29,296 INFO L226 Difference]: Without dead ends: 204 [2020-10-29 03:31:29,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=116, Invalid=1074, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:31:29,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-29 03:31:29,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 135. [2020-10-29 03:31:29,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-29 03:31:29,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 154 transitions. [2020-10-29 03:31:29,328 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 154 transitions. Word has length 67 [2020-10-29 03:31:29,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:29,329 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 154 transitions. [2020-10-29 03:31:29,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:31:29,329 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 154 transitions. [2020-10-29 03:31:29,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 03:31:29,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:29,330 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:29,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:31:29,332 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:29,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:29,332 INFO L82 PathProgramCache]: Analyzing trace with hash -735709806, now seen corresponding path program 13 times [2020-10-29 03:31:29,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:29,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735224588] [2020-10-29 03:31:29,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:29,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:29,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:29,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:29,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 03:31:29,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:29,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-29 03:31:29,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:29,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:29,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:31:29,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:29,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:31:29,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:29,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:29,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:29,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:29,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:29,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:29,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:29,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:29,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:29,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:29,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:29,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:29,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:29,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 03:31:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:29,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:29,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:29,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:29,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:29,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:29,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:29,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:31:29,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:29,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:29,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 03:31:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:29,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:29,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:29,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:29,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:29,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:29,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:29,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:29,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:29,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:31:29,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:29,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:29,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 03:31:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:29,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:29,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:29,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:29,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:29,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:31:29,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:29,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:29,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:29,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:31:29,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:29,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:29,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:31:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:29,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:29,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:29,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:29,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:29,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:29,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:29,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:29,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:29,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:31:29,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:29,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:29,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 03:31:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:29,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:29,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:29,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:29,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:29,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:29,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:29,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:31:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:29,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:29,813 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 10 proven. 35 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-29 03:31:29,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735224588] [2020-10-29 03:31:29,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:29,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:31:29,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817055760] [2020-10-29 03:31:29,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:31:29,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:29,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:31:29,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:31:29,820 INFO L87 Difference]: Start difference. First operand 135 states and 154 transitions. Second operand 9 states. [2020-10-29 03:31:29,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:29,956 INFO L93 Difference]: Finished difference Result 242 states and 274 transitions. [2020-10-29 03:31:29,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:31:29,958 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-29 03:31:29,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:29,959 INFO L225 Difference]: With dead ends: 242 [2020-10-29 03:31:29,959 INFO L226 Difference]: Without dead ends: 145 [2020-10-29 03:31:29,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:31:29,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-29 03:31:29,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 141. [2020-10-29 03:31:29,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-29 03:31:29,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 162 transitions. [2020-10-29 03:31:29,981 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 162 transitions. Word has length 72 [2020-10-29 03:31:29,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:29,981 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 162 transitions. [2020-10-29 03:31:29,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:31:29,981 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 162 transitions. [2020-10-29 03:31:29,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 03:31:29,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:29,983 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:29,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:31:29,983 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:29,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:29,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1982792362, now seen corresponding path program 14 times [2020-10-29 03:31:29,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:29,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424756456] [2020-10-29 03:31:29,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:29,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:30,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:30,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:30,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:30,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 03:31:30,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:31:30,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-10-29 03:31:30,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:30,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:30,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:31:30,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:30,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 03:31:30,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:31,639 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 27 [2020-10-29 03:31:32,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:32,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:32,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:32,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:32,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:32,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:32,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:32,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:32,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:32,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 03:31:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:32,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:32,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:32,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:32,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:32,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:32,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:32,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:32,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:32,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:32,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:32,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:32,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 03:31:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:32,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:32,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:32,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:32,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:32,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:32,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:32,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:32,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:32,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:32,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:32,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:32,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 03:31:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:32,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:32,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:32,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:32,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:32,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:32,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:32,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:32,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:32,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 03:31:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:32,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:32,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:32,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:32,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:32,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:32,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:32,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:32,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:32,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:32,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:32,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:32,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 03:31:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:32,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:32,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:32,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:32,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:32,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:32,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:32,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:32,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:32,469 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 10 proven. 101 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 03:31:32,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424756456] [2020-10-29 03:31:32,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:32,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:31:32,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748844788] [2020-10-29 03:31:32,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:31:32,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:32,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:31:32,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:31:32,471 INFO L87 Difference]: Start difference. First operand 141 states and 162 transitions. Second operand 21 states. [2020-10-29 03:31:33,658 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-29 03:31:35,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:35,052 INFO L93 Difference]: Finished difference Result 220 states and 266 transitions. [2020-10-29 03:31:35,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:31:35,054 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 75 [2020-10-29 03:31:35,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:35,056 INFO L225 Difference]: With dead ends: 220 [2020-10-29 03:31:35,056 INFO L226 Difference]: Without dead ends: 216 [2020-10-29 03:31:35,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=115, Invalid=1217, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:31:35,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-29 03:31:35,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 172. [2020-10-29 03:31:35,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-29 03:31:35,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 206 transitions. [2020-10-29 03:31:35,087 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 206 transitions. Word has length 75 [2020-10-29 03:31:35,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:35,087 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 206 transitions. [2020-10-29 03:31:35,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:31:35,087 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 206 transitions. [2020-10-29 03:31:35,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 03:31:35,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:35,088 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:35,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:31:35,091 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:35,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:35,091 INFO L82 PathProgramCache]: Analyzing trace with hash 306228062, now seen corresponding path program 5 times [2020-10-29 03:31:35,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:35,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206085097] [2020-10-29 03:31:35,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:35,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:35,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:35,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:35,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:35,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 03:31:35,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:31:35,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 707 [2020-10-29 03:31:35,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:35,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:35,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:31:35,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:35,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 03:31:35,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:36,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:36,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:36,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:36,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:36,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:36,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:36,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:36,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:36,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:36,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:36,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:36,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:36,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:31:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:36,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:36,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:36,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:36,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:36,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:36,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:36,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:36,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:36,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:31:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:36,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:36,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:36,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:36,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:36,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:36,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:36,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:36,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:36,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:36,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:36,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:36,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:31:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:36,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:36,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:36,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:36,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:36,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:36,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:36,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:36,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:36,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:36,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:36,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:36,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:31:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:36,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:36,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:36,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:36,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:36,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:36,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:36,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:36,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:36,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 03:31:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:36,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:36,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:36,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:36,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:36,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:36,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:36,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:36,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:36,513 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 10 proven. 101 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 03:31:36,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206085097] [2020-10-29 03:31:36,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:36,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:31:36,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709215076] [2020-10-29 03:31:36,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:31:36,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:36,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:31:36,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:31:36,516 INFO L87 Difference]: Start difference. First operand 172 states and 206 transitions. Second operand 19 states. [2020-10-29 03:31:38,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:38,151 INFO L93 Difference]: Finished difference Result 199 states and 236 transitions. [2020-10-29 03:31:38,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:31:38,157 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 76 [2020-10-29 03:31:38,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:38,158 INFO L225 Difference]: With dead ends: 199 [2020-10-29 03:31:38,158 INFO L226 Difference]: Without dead ends: 195 [2020-10-29 03:31:38,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:31:38,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-29 03:31:38,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 180. [2020-10-29 03:31:38,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-29 03:31:38,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 214 transitions. [2020-10-29 03:31:38,192 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 214 transitions. Word has length 76 [2020-10-29 03:31:38,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:38,192 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 214 transitions. [2020-10-29 03:31:38,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:31:38,193 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 214 transitions. [2020-10-29 03:31:38,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 03:31:38,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:38,194 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:38,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:31:38,194 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:38,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:38,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1317421422, now seen corresponding path program 15 times [2020-10-29 03:31:38,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:38,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475790186] [2020-10-29 03:31:38,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:38,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:38,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:38,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:39,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:39,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 03:31:39,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:31:39,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1262 [2020-10-29 03:31:39,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:39,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:39,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:31:39,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:39,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 03:31:39,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:40,111 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2020-10-29 03:31:40,255 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-10-29 03:31:40,406 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2020-10-29 03:31:41,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:41,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:41,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:41,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:41,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:41,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:41,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:41,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:41,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:41,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:41,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:41,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:41,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:31:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:41,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:41,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:41,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:41,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:41,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:41,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:41,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:41,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:41,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:41,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:41,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:41,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:31:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:41,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:41,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:41,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:41,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:41,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:41,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:41,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:41,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:41,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:41,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:41,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:41,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 03:31:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:41,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:41,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:41,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:41,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:41,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:41,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:41,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:41,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:41,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:41,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:41,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:41,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 03:31:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:41,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:41,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:41,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:41,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:41,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:41,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:41,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:41,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:41,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:41,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:41,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:41,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 03:31:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:41,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:41,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:41,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:41,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:41,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:41,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:41,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:41,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:41,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:41,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:41,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:41,138 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 10 proven. 120 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 03:31:41,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475790186] [2020-10-29 03:31:41,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:41,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:31:41,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546931239] [2020-10-29 03:31:41,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:31:41,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:41,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:31:41,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:31:41,140 INFO L87 Difference]: Start difference. First operand 180 states and 214 transitions. Second operand 22 states. [2020-10-29 03:31:43,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:43,598 INFO L93 Difference]: Finished difference Result 258 states and 307 transitions. [2020-10-29 03:31:43,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:31:43,605 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 78 [2020-10-29 03:31:43,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:43,606 INFO L225 Difference]: With dead ends: 258 [2020-10-29 03:31:43,607 INFO L226 Difference]: Without dead ends: 254 [2020-10-29 03:31:43,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:31:43,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-29 03:31:43,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 157. [2020-10-29 03:31:43,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-29 03:31:43,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 179 transitions. [2020-10-29 03:31:43,632 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 179 transitions. Word has length 78 [2020-10-29 03:31:43,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:43,632 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 179 transitions. [2020-10-29 03:31:43,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:31:43,632 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 179 transitions. [2020-10-29 03:31:43,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 03:31:43,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:43,633 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:43,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:31:43,634 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:43,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:43,634 INFO L82 PathProgramCache]: Analyzing trace with hash -160479599, now seen corresponding path program 16 times [2020-10-29 03:31:43,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:43,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646563307] [2020-10-29 03:31:43,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:43,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:43,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:44,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:44,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 03:31:44,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:44,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-29 03:31:44,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:44,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:44,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:31:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 03:31:44,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:44,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:44,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:44,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:44,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:44,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:44,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:44,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:44,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:44,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:44,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:44,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:44,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:44,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 03:31:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:44,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:44,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:44,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:44,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:44,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:44,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:44,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:44,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:44,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:31:44,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:44,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:44,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 03:31:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:44,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:44,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:44,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:44,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:44,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:44,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:44,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:44,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:44,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:31:44,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:44,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:44,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 03:31:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:44,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:44,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:44,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:44,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:44,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:44,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:44,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:44,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:44,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:31:44,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:44,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:44,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 03:31:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:44,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:44,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:44,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:44,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:44,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:44,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:44,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:31:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:44,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:44,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 03:31:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:44,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:44,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:44,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:44,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:44,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:44,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:44,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:44,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:44,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:31:44,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:44,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:44,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 03:31:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:44,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:44,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:44,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:44,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:44,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:44,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:44,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:44,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:44,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:31:44,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:44,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:44,130 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-29 03:31:44,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646563307] [2020-10-29 03:31:44,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:44,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:31:44,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955471275] [2020-10-29 03:31:44,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:31:44,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:44,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:31:44,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:31:44,132 INFO L87 Difference]: Start difference. First operand 157 states and 179 transitions. Second operand 10 states. [2020-10-29 03:31:44,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:44,265 INFO L93 Difference]: Finished difference Result 280 states and 316 transitions. [2020-10-29 03:31:44,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:31:44,266 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-10-29 03:31:44,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:44,268 INFO L225 Difference]: With dead ends: 280 [2020-10-29 03:31:44,268 INFO L226 Difference]: Without dead ends: 167 [2020-10-29 03:31:44,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:31:44,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-29 03:31:44,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 163. [2020-10-29 03:31:44,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-29 03:31:44,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 187 transitions. [2020-10-29 03:31:44,291 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 187 transitions. Word has length 83 [2020-10-29 03:31:44,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:44,291 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 187 transitions. [2020-10-29 03:31:44,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:31:44,291 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 187 transitions. [2020-10-29 03:31:44,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-29 03:31:44,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:44,292 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:44,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:31:44,293 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:44,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:44,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1563190663, now seen corresponding path program 17 times [2020-10-29 03:31:44,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:44,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145003216] [2020-10-29 03:31:44,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:44,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:44,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:44,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:45,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:45,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 03:31:45,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:31:45,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-10-29 03:31:45,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:45,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:45,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:31:45,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:45,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 03:31:45,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:46,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:46,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:46,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:46,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:46,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:46,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:46,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:46,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:46,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:46,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:46,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:46,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:46,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:31:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:46,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:46,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:46,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:46,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:46,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:46,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:46,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:46,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:46,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:46,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:46,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:46,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:31:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:46,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:46,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:46,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:46,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:46,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:46,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:46,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:46,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:46,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 03:31:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:46,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:46,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:46,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:46,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:46,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:46,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:46,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:46,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:46,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:46,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:46,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:46,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 03:31:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:46,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:46,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:46,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:46,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:46,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:46,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:46,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:46,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:46,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 03:31:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:46,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:46,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:46,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:46,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:46,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:46,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:46,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:46,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:46,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:46,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:46,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:46,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 03:31:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:46,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:46,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:46,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:46,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:46,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:46,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:46,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:46,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:46,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:46,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:46,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:46,900 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 12 proven. 142 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-29 03:31:46,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145003216] [2020-10-29 03:31:46,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:46,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:31:46,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9922376] [2020-10-29 03:31:46,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:31:46,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:46,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:31:46,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:31:46,902 INFO L87 Difference]: Start difference. First operand 163 states and 187 transitions. Second operand 23 states. [2020-10-29 03:31:49,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:49,901 INFO L93 Difference]: Finished difference Result 251 states and 303 transitions. [2020-10-29 03:31:49,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:31:49,902 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2020-10-29 03:31:49,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:49,905 INFO L225 Difference]: With dead ends: 251 [2020-10-29 03:31:49,905 INFO L226 Difference]: Without dead ends: 247 [2020-10-29 03:31:49,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=130, Invalid=1592, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:31:49,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-29 03:31:49,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 198. [2020-10-29 03:31:49,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-29 03:31:49,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 237 transitions. [2020-10-29 03:31:49,939 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 237 transitions. Word has length 86 [2020-10-29 03:31:49,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:49,939 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 237 transitions. [2020-10-29 03:31:49,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:31:49,939 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 237 transitions. [2020-10-29 03:31:49,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 03:31:49,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:49,941 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:49,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:31:49,941 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:49,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:49,941 INFO L82 PathProgramCache]: Analyzing trace with hash 2083056330, now seen corresponding path program 6 times [2020-10-29 03:31:49,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:49,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581698934] [2020-10-29 03:31:49,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:49,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:49,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:50,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:51,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:51,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 03:31:51,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:31:51,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1057 [2020-10-29 03:31:51,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:51,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:51,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:31:51,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:51,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 03:31:51,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:51,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:51,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:51,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:51,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:51,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:51,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:51,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:51,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:51,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:51,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:51,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:51,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:51,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:31:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:51,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:51,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:51,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:51,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:51,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:51,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:51,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:51,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:51,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:51,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:51,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:51,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:31:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:51,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:51,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:51,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:51,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:51,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:51,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:51,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:51,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:51,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 03:31:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:51,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:51,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:51,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:51,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:51,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:51,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:51,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:51,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:51,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:51,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:51,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:51,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 03:31:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:51,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:51,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:51,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:51,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:51,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:51,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:51,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:51,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:51,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:51,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:51,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:51,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 03:31:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:51,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:51,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:51,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:51,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:51,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:51,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:51,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:51,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:51,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:51,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:51,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:51,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 03:31:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:51,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:51,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:51,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:51,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:51,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:51,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:51,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:51,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:51,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:51,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:51,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 12 proven. 142 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-29 03:31:51,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581698934] [2020-10-29 03:31:51,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:51,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:31:51,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440817438] [2020-10-29 03:31:51,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:31:51,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:51,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:31:51,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:31:51,805 INFO L87 Difference]: Start difference. First operand 198 states and 237 transitions. Second operand 21 states. [2020-10-29 03:31:53,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:53,890 INFO L93 Difference]: Finished difference Result 226 states and 268 transitions. [2020-10-29 03:31:53,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:31:53,891 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 87 [2020-10-29 03:31:53,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:53,892 INFO L225 Difference]: With dead ends: 226 [2020-10-29 03:31:53,892 INFO L226 Difference]: Without dead ends: 222 [2020-10-29 03:31:53,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=88, Invalid=904, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:31:53,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-29 03:31:53,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 206. [2020-10-29 03:31:53,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-29 03:31:53,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 245 transitions. [2020-10-29 03:31:53,918 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 245 transitions. Word has length 87 [2020-10-29 03:31:53,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:53,919 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 245 transitions. [2020-10-29 03:31:53,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:31:53,919 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 245 transitions. [2020-10-29 03:31:53,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 03:31:53,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:53,920 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:53,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:31:53,921 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:53,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:53,921 INFO L82 PathProgramCache]: Analyzing trace with hash 303291793, now seen corresponding path program 18 times [2020-10-29 03:31:53,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:53,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891582451] [2020-10-29 03:31:53,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:53,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:53,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:54,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:54,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:54,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 03:31:54,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:31:54,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 961 [2020-10-29 03:31:54,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:54,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:31:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 03:31:54,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:55,087 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 28 [2020-10-29 03:31:55,214 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 32 [2020-10-29 03:31:55,353 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 35 [2020-10-29 03:31:55,483 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 32 [2020-10-29 03:31:55,628 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-10-29 03:31:55,782 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-10-29 03:31:55,940 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-10-29 03:31:56,134 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-10-29 03:31:56,331 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2020-10-29 03:31:56,474 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 32 [2020-10-29 03:31:57,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:57,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:57,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:57,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:57,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:57,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:57,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:57,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:57,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:57,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:57,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:57,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:57,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:31:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:57,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:57,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:57,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:57,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:57,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:57,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:57,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:57,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:57,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:57,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:57,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:57,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:31:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:57,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:57,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:57,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:57,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:57,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:57,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:57,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:57,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:57,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:57,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:57,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:57,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:31:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:57,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:57,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:57,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:57,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:57,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:57,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:57,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:57,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:57,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:57,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:57,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:57,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:31:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:57,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:57,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:57,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:57,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:57,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:57,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:57,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:57,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:57,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:57,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:57,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:57,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 03:31:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:57,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:57,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:57,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:57,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:57,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:57,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:57,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:57,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:57,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:57,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:57,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:57,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 03:31:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:57,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:57,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:57,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:31:57,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:57,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:57,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:57,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:57,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:31:57,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:57,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:31:57,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:57,203 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 12 proven. 164 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-29 03:31:57,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891582451] [2020-10-29 03:31:57,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:57,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:31:57,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805721987] [2020-10-29 03:31:57,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:31:57,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:57,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:31:57,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:31:57,205 INFO L87 Difference]: Start difference. First operand 206 states and 245 transitions. Second operand 24 states. [2020-10-29 03:31:57,440 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-10-29 03:31:57,596 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-29 03:31:57,806 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-29 03:31:58,008 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-29 03:31:58,220 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-29 03:31:58,432 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-29 03:31:58,659 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-29 03:31:58,849 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-29 03:32:01,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:01,289 INFO L93 Difference]: Finished difference Result 270 states and 323 transitions. [2020-10-29 03:32:01,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:32:01,295 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 89 [2020-10-29 03:32:01,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:01,297 INFO L225 Difference]: With dead ends: 270 [2020-10-29 03:32:01,297 INFO L226 Difference]: Without dead ends: 266 [2020-10-29 03:32:01,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=143, Invalid=1663, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:32:01,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-29 03:32:01,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 179. [2020-10-29 03:32:01,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-29 03:32:01,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 204 transitions. [2020-10-29 03:32:01,328 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 204 transitions. Word has length 89 [2020-10-29 03:32:01,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:01,329 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 204 transitions. [2020-10-29 03:32:01,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:32:01,329 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 204 transitions. [2020-10-29 03:32:01,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 03:32:01,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:01,330 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:01,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:32:01,330 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:01,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:01,331 INFO L82 PathProgramCache]: Analyzing trace with hash 2145558368, now seen corresponding path program 19 times [2020-10-29 03:32:01,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:01,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729474571] [2020-10-29 03:32:01,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:01,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:01,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:01,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:01,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 03:32:01,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:01,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-29 03:32:01,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:01,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:32:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:32:01,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:01,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:01,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:01,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:01,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:01,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:01,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:01,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:01,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:01,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:01,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:01,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:01,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:01,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:32:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:01,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:01,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:01,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:01,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:01,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:32:01,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:01,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:01,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:01,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:01,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:01,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:01,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:32:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:01,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:01,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:01,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:01,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:01,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:32:01,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:01,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:01,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:01,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:01,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:01,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:01,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 03:32:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:01,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:01,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:01,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:01,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:01,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:32:01,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:01,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:01,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:01,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:01,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:01,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:01,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 03:32:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:01,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:01,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:01,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:01,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:01,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:32:01,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:01,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:01,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:01,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:01,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:01,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:01,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 03:32:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:01,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:01,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:01,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:01,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:01,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:32:01,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:01,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:01,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:01,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:01,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:01,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 03:32:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:01,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:01,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:01,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:01,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:01,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:01,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:01,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:01,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:01,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:01,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:01,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:01,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 03:32:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:01,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:01,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:01,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:01,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:01,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:01,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:01,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:01,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:01,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:01,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:01,953 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 14 proven. 70 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-10-29 03:32:01,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729474571] [2020-10-29 03:32:01,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:01,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:32:01,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609851791] [2020-10-29 03:32:01,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:32:01,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:01,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:32:01,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:32:01,955 INFO L87 Difference]: Start difference. First operand 179 states and 204 transitions. Second operand 11 states. [2020-10-29 03:32:02,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:02,132 INFO L93 Difference]: Finished difference Result 318 states and 358 transitions. [2020-10-29 03:32:02,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:32:02,133 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-10-29 03:32:02,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:02,135 INFO L225 Difference]: With dead ends: 318 [2020-10-29 03:32:02,135 INFO L226 Difference]: Without dead ends: 189 [2020-10-29 03:32:02,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:32:02,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-29 03:32:02,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 185. [2020-10-29 03:32:02,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-29 03:32:02,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 212 transitions. [2020-10-29 03:32:02,166 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 212 transitions. Word has length 94 [2020-10-29 03:32:02,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:02,166 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 212 transitions. [2020-10-29 03:32:02,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:32:02,166 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 212 transitions. [2020-10-29 03:32:02,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 03:32:02,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:02,167 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:02,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:32:02,168 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:02,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:02,169 INFO L82 PathProgramCache]: Analyzing trace with hash 2124040824, now seen corresponding path program 20 times [2020-10-29 03:32:02,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:02,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936451250] [2020-10-29 03:32:02,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:02,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:02,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:02,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:03,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:03,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 03:32:03,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:32:03,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 937 [2020-10-29 03:32:03,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:03,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:03,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:32:03,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:03,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 03:32:03,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:04,010 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-29 03:32:04,156 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-10-29 03:32:04,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:04,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:04,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:04,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:04,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:04,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:04,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:04,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:04,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:04,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:04,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:04,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:04,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:32:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:04,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:04,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:04,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:04,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:04,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:04,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:04,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:04,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:04,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:04,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:04,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:04,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:32:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:04,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:04,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:04,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:04,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:04,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:04,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:04,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:04,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:04,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:04,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:04,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:04,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:32:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:04,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:04,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:04,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:04,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:04,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:04,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:04,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:04,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:04,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:04,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:04,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:04,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:32:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:04,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:04,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:04,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:04,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:04,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:04,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:04,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:04,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:04,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:04,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:04,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:04,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 03:32:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:04,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:04,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:04,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:04,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:04,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:04,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:04,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:04,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:04,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:04,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:04,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:04,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 03:32:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:04,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:04,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:04,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:04,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:04,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:04,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:04,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:04,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:04,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:04,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:04,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:04,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 03:32:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:04,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:04,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:04,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:04,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:04,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:04,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:04,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:04,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:04,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:04,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:04,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:04,998 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 14 proven. 190 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-29 03:32:04,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936451250] [2020-10-29 03:32:04,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:04,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:32:04,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381335344] [2020-10-29 03:32:04,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:32:04,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:05,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:32:05,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=550, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:32:05,000 INFO L87 Difference]: Start difference. First operand 185 states and 212 transitions. Second operand 25 states. [2020-10-29 03:32:08,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:08,073 INFO L93 Difference]: Finished difference Result 282 states and 340 transitions. [2020-10-29 03:32:08,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:32:08,073 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 97 [2020-10-29 03:32:08,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:08,075 INFO L225 Difference]: With dead ends: 282 [2020-10-29 03:32:08,076 INFO L226 Difference]: Without dead ends: 278 [2020-10-29 03:32:08,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=142, Invalid=1928, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:32:08,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-29 03:32:08,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 224. [2020-10-29 03:32:08,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-29 03:32:08,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 268 transitions. [2020-10-29 03:32:08,118 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 268 transitions. Word has length 97 [2020-10-29 03:32:08,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:08,119 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 268 transitions. [2020-10-29 03:32:08,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:32:08,119 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 268 transitions. [2020-10-29 03:32:08,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 03:32:08,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:08,120 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:08,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:32:08,121 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:08,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:08,121 INFO L82 PathProgramCache]: Analyzing trace with hash 2026412874, now seen corresponding path program 7 times [2020-10-29 03:32:08,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:08,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041838680] [2020-10-29 03:32:08,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:08,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:08,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:08,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:09,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:09,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 03:32:09,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:32:09,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 888 [2020-10-29 03:32:09,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:09,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:09,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:32:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 03:32:09,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:10,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:10,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:10,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:10,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:10,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:10,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:10,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:10,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:10,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:10,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:10,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:32:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:10,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:10,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:10,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:10,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:10,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:10,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:10,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:10,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:10,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:10,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:10,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:10,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:32:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:10,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:10,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:10,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:10,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:10,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:10,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:10,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:10,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:10,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:10,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:10,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:10,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 03:32:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:10,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:10,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:10,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:10,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:10,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:10,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:10,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:10,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:10,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:10,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:10,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:10,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 03:32:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:10,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:10,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:10,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:10,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:10,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:10,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:10,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:10,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:10,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:10,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:10,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:10,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 03:32:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:10,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:10,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:10,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:10,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:10,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:10,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:10,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:10,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:10,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:10,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:10,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:10,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 03:32:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:10,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:10,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:10,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:10,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:10,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:10,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:10,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:10,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:10,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 03:32:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:10,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:10,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:10,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:10,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:10,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:10,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:10,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:10,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:10,122 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 14 proven. 190 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-29 03:32:10,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041838680] [2020-10-29 03:32:10,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:10,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:32:10,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878166786] [2020-10-29 03:32:10,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:32:10,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:10,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:32:10,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:32:10,124 INFO L87 Difference]: Start difference. First operand 224 states and 268 transitions. Second operand 23 states. [2020-10-29 03:32:12,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:12,680 INFO L93 Difference]: Finished difference Result 253 states and 300 transitions. [2020-10-29 03:32:12,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:32:12,680 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 98 [2020-10-29 03:32:12,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:12,682 INFO L225 Difference]: With dead ends: 253 [2020-10-29 03:32:12,682 INFO L226 Difference]: Without dead ends: 249 [2020-10-29 03:32:12,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=96, Invalid=1094, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:32:12,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-29 03:32:12,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 232. [2020-10-29 03:32:12,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-29 03:32:12,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 276 transitions. [2020-10-29 03:32:12,725 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 276 transitions. Word has length 98 [2020-10-29 03:32:12,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:12,726 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 276 transitions. [2020-10-29 03:32:12,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:32:12,726 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 276 transitions. [2020-10-29 03:32:12,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 03:32:12,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:12,727 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:12,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:32:12,728 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:12,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:12,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1045014624, now seen corresponding path program 21 times [2020-10-29 03:32:12,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:12,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511259204] [2020-10-29 03:32:12,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:12,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:12,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:13,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:13,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:13,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 03:32:13,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:32:13,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-10-29 03:32:13,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:13,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:13,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:32:13,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:13,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 03:32:13,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:14,012 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2020-10-29 03:32:14,210 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-10-29 03:32:14,454 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-10-29 03:32:14,604 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2020-10-29 03:32:14,803 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-10-29 03:32:14,977 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2020-10-29 03:32:15,188 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 32 [2020-10-29 03:32:15,381 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-10-29 03:32:15,619 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2020-10-29 03:32:15,852 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2020-10-29 03:32:16,038 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2020-10-29 03:32:16,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:16,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:16,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:16,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:16,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:16,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:16,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:16,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:16,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:16,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:32:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:16,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:16,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:16,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:16,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:16,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:16,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:16,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:16,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:16,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:16,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:16,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:16,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:32:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:16,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:16,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:16,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:16,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:16,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:16,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:16,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:16,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:16,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:16,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:16,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:16,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:32:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:16,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:16,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:16,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:16,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:16,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:16,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:16,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:16,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:16,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 03:32:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:16,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:16,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:16,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:16,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:16,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:16,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:16,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:16,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:16,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:16,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:16,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:16,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 03:32:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:16,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:16,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:16,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:16,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:16,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:16,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:16,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:16,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:16,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:16,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:16,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:16,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 03:32:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:16,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:16,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:16,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:16,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:16,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:16,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:16,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:16,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:16,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:16,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:16,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:16,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 03:32:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:16,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:16,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:16,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:16,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:16,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:16,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:16,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:16,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 14 proven. 215 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-29 03:32:16,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511259204] [2020-10-29 03:32:16,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:16,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:32:16,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115038844] [2020-10-29 03:32:16,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:32:16,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:16,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:32:16,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:32:16,903 INFO L87 Difference]: Start difference. First operand 232 states and 276 transitions. Second operand 26 states. [2020-10-29 03:32:17,163 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-10-29 03:32:17,351 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-29 03:32:17,797 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-29 03:32:18,026 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-29 03:32:18,261 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-29 03:32:18,479 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-29 03:32:18,719 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-29 03:32:18,934 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-29 03:32:19,350 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2020-10-29 03:32:19,839 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-29 03:32:20,129 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-29 03:32:20,392 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-29 03:32:20,670 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-29 03:32:20,950 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-29 03:32:21,232 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2020-10-29 03:32:21,501 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2020-10-29 03:32:21,712 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2020-10-29 03:32:22,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:22,084 INFO L93 Difference]: Finished difference Result 301 states and 360 transitions. [2020-10-29 03:32:22,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:32:22,085 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 100 [2020-10-29 03:32:22,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:22,088 INFO L225 Difference]: With dead ends: 301 [2020-10-29 03:32:22,088 INFO L226 Difference]: Without dead ends: 297 [2020-10-29 03:32:22,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=156, Invalid=2006, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:32:22,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-29 03:32:22,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 201. [2020-10-29 03:32:22,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-29 03:32:22,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 229 transitions. [2020-10-29 03:32:22,133 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 229 transitions. Word has length 100 [2020-10-29 03:32:22,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:22,134 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 229 transitions. [2020-10-29 03:32:22,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:32:22,134 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 229 transitions. [2020-10-29 03:32:22,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 03:32:22,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:22,135 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:22,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:32:22,135 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:22,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:22,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1380655009, now seen corresponding path program 22 times [2020-10-29 03:32:22,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:22,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695789739] [2020-10-29 03:32:22,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:22,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:22,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:22,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:22,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 03:32:22,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:22,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-29 03:32:22,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:22,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:32:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:32:22,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:22,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:22,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:22,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:22,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:22,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:22,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:22,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:22,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:22,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:22,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:22,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:22,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:22,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:32:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:22,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:22,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:22,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:22,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:22,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:32:22,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:22,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:22,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:22,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:22,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:22,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:22,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:32:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:22,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:22,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:22,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:22,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:22,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:32:22,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:22,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:22,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:22,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:22,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:22,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:22,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:32:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:22,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:22,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:22,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:22,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:22,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:32:22,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:22,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:22,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:22,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:22,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:22,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:22,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:32:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:22,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:22,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:22,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:22,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:22,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:22,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:22,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:22,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:22,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:22,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:22,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:22,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 03:32:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:22,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:22,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:22,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:22,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:22,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:22,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:22,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:22,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:22,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:22,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:22,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:22,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 03:32:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:22,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:22,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:22,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:22,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:22,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:32:22,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:22,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:22,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:22,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:22,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:22,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:22,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 03:32:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:22,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:22,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:22,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:22,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:22,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:32:22,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:22,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:22,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:22,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 03:32:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:22,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:22,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:22,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:22,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:22,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:22,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:22,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:22,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:22,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:22,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:22,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 16 proven. 92 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-10-29 03:32:22,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695789739] [2020-10-29 03:32:22,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:22,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:32:22,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098476450] [2020-10-29 03:32:22,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:32:22,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:22,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:32:22,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:32:22,715 INFO L87 Difference]: Start difference. First operand 201 states and 229 transitions. Second operand 12 states. [2020-10-29 03:32:22,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:22,913 INFO L93 Difference]: Finished difference Result 356 states and 400 transitions. [2020-10-29 03:32:22,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:32:22,914 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 105 [2020-10-29 03:32:22,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:22,916 INFO L225 Difference]: With dead ends: 356 [2020-10-29 03:32:22,916 INFO L226 Difference]: Without dead ends: 211 [2020-10-29 03:32:22,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:32:22,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-29 03:32:22,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2020-10-29 03:32:22,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-29 03:32:22,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 237 transitions. [2020-10-29 03:32:22,939 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 237 transitions. Word has length 105 [2020-10-29 03:32:22,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:22,939 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 237 transitions. [2020-10-29 03:32:22,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:32:22,940 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 237 transitions. [2020-10-29 03:32:22,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 03:32:22,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:22,941 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:22,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:32:22,941 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:22,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:22,941 INFO L82 PathProgramCache]: Analyzing trace with hash -2000955833, now seen corresponding path program 23 times [2020-10-29 03:32:22,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:22,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446016855] [2020-10-29 03:32:22,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:22,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:22,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:23,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:23,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:23,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 03:32:23,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:32:23,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 956 [2020-10-29 03:32:23,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:23,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:23,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:32:23,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:23,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 03:32:23,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:24,868 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-29 03:32:25,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:25,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:25,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:25,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:25,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:25,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:25,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:25,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:25,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:25,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:25,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:32:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:25,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:25,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:25,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:25,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:25,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:25,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:25,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:25,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:32:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:25,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:25,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:25,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:25,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:25,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:25,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:25,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:25,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:25,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:25,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:25,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:25,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:32:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:25,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:25,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:25,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:25,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:25,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:25,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:25,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:25,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:25,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:25,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:25,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:25,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 03:32:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:25,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:25,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:25,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:25,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:25,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:25,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:25,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:25,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:25,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:25,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:25,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:25,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 03:32:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:25,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:25,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:25,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:25,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:25,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:25,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:25,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:25,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:25,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:25,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:25,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:25,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 03:32:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:25,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:25,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:25,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:25,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:25,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:25,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:25,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:25,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:25,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:25,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:25,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:25,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 03:32:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:25,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:25,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:25,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:25,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:25,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:25,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:25,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:25,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:25,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:25,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:25,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:25,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-29 03:32:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:25,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:25,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:25,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:25,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:25,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:25,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:25,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:25,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:25,998 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 16 proven. 245 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-29 03:32:25,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446016855] [2020-10-29 03:32:25,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:25,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:32:25,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287357508] [2020-10-29 03:32:25,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:32:25,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:26,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:32:26,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=647, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:32:26,000 INFO L87 Difference]: Start difference. First operand 207 states and 237 transitions. Second operand 27 states. [2020-10-29 03:32:29,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:29,589 INFO L93 Difference]: Finished difference Result 313 states and 377 transitions. [2020-10-29 03:32:29,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:32:29,590 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 108 [2020-10-29 03:32:29,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:29,592 INFO L225 Difference]: With dead ends: 313 [2020-10-29 03:32:29,592 INFO L226 Difference]: Without dead ends: 309 [2020-10-29 03:32:29,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=151, Invalid=2201, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:32:29,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-29 03:32:29,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 250. [2020-10-29 03:32:29,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-29 03:32:29,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 299 transitions. [2020-10-29 03:32:29,640 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 299 transitions. Word has length 108 [2020-10-29 03:32:29,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:29,641 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 299 transitions. [2020-10-29 03:32:29,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:32:29,641 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 299 transitions. [2020-10-29 03:32:29,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 03:32:29,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:29,642 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:29,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 03:32:29,643 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:29,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:29,643 INFO L82 PathProgramCache]: Analyzing trace with hash 5569078, now seen corresponding path program 8 times [2020-10-29 03:32:29,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:29,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244105829] [2020-10-29 03:32:29,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:29,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:29,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:30,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:31,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:31,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 03:32:31,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:32:31,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1654 [2020-10-29 03:32:31,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:31,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:31,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:32:31,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:31,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 03:32:31,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:32,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:32,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:32,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:32,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:32,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:32,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:32,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:32,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:32,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:32,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:32,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:32,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:32,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:32:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:32,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:32,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:32,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:32,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:32,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:32,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:32,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:32,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:32,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:32:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:32,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:32,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:32,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:32,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:32,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:32,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:32,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:32,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:32,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:32,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:32,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:32,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:32:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:32,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:32,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:32,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:32,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:32,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:32,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:32,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:32,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:32,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:32,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:32,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:32,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:32:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:32,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:32,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:32,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:32,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:32,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:32,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:32,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:32,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:32,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:32,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:32,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:32,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:32:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:32,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:32,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:32,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:32,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:32,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:32,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:32,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:32,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:32,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:32,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:32,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:32,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 03:32:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:32,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:32,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:32,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:32,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:32,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:32,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:32,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:32,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:32,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:32,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:32,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:32,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:32:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:32,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:32,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:32,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:32,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:32,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:32,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:32,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:32,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:32,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:32,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:32,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:32,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 03:32:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:32,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:32,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:32,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:32,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:32,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:32,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:32,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:32,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:32,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:32,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:32,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:32,951 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 16 proven. 245 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-29 03:32:32,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244105829] [2020-10-29 03:32:32,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:32,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:32:32,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074554979] [2020-10-29 03:32:32,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:32:32,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:32,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:32:32,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:32:32,954 INFO L87 Difference]: Start difference. First operand 250 states and 299 transitions. Second operand 25 states. [2020-10-29 03:32:36,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:36,304 INFO L93 Difference]: Finished difference Result 280 states and 332 transitions. [2020-10-29 03:32:36,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:32:36,305 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 109 [2020-10-29 03:32:36,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:36,306 INFO L225 Difference]: With dead ends: 280 [2020-10-29 03:32:36,306 INFO L226 Difference]: Without dead ends: 276 [2020-10-29 03:32:36,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=104, Invalid=1302, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:32:36,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-29 03:32:36,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 258. [2020-10-29 03:32:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-29 03:32:36,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 307 transitions. [2020-10-29 03:32:36,358 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 307 transitions. Word has length 109 [2020-10-29 03:32:36,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:36,358 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 307 transitions. [2020-10-29 03:32:36,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:32:36,359 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 307 transitions. [2020-10-29 03:32:36,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 03:32:36,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:36,360 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:36,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 03:32:36,360 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:36,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:36,361 INFO L82 PathProgramCache]: Analyzing trace with hash -138528929, now seen corresponding path program 24 times [2020-10-29 03:32:36,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:36,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119027856] [2020-10-29 03:32:36,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:36,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:36,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:36,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:37,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:37,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 03:32:37,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:32:37,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1072 [2020-10-29 03:32:37,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:37,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:37,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:32:37,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:37,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 03:32:37,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:38,016 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2020-10-29 03:32:38,144 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 26 [2020-10-29 03:32:38,634 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2020-10-29 03:32:38,797 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2020-10-29 03:32:39,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:39,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:39,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:39,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:39,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:39,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:39,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:39,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:39,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:39,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:39,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:39,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:39,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:32:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:39,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:39,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:39,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:39,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:39,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:39,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:39,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:39,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:39,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 03:32:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:39,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:39,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:39,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:39,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:39,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:39,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:39,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:39,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:39,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:39,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:39,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:39,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 03:32:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:39,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:39,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:39,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:39,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:39,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:39,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:39,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:39,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:39,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:39,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 03:32:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:39,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:39,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:39,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:39,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:39,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:39,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:39,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:39,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:39,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:39,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:39,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:39,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 03:32:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:39,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:39,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:39,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:39,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:39,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:39,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:39,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:39,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:39,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 03:32:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:39,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:39,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:39,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:39,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:39,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:39,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:39,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:39,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:39,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:39,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:39,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:39,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-29 03:32:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:39,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:39,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:39,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:39,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:39,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:39,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:39,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:39,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:39,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:39,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:39,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:39,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 03:32:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:39,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:39,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:39,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:39,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:39,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:39,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:39,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:39,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:39,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:39,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:39,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 16 proven. 273 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-29 03:32:39,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119027856] [2020-10-29 03:32:39,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:39,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:32:39,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304149956] [2020-10-29 03:32:39,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:32:39,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:39,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:32:39,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=698, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:32:39,944 INFO L87 Difference]: Start difference. First operand 258 states and 307 transitions. Second operand 28 states. [2020-10-29 03:32:41,944 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-29 03:32:44,887 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2020-10-29 03:32:45,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:45,283 INFO L93 Difference]: Finished difference Result 332 states and 397 transitions. [2020-10-29 03:32:45,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 03:32:45,284 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 111 [2020-10-29 03:32:45,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:45,286 INFO L225 Difference]: With dead ends: 332 [2020-10-29 03:32:45,286 INFO L226 Difference]: Without dead ends: 328 [2020-10-29 03:32:45,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=168, Invalid=2382, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 03:32:45,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-29 03:32:45,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 223. [2020-10-29 03:32:45,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-29 03:32:45,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 254 transitions. [2020-10-29 03:32:45,324 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 254 transitions. Word has length 111 [2020-10-29 03:32:45,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:45,325 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 254 transitions. [2020-10-29 03:32:45,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:32:45,325 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 254 transitions. [2020-10-29 03:32:45,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 03:32:45,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:45,326 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:45,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 03:32:45,326 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:45,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:45,327 INFO L82 PathProgramCache]: Analyzing trace with hash 309407022, now seen corresponding path program 25 times [2020-10-29 03:32:45,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:45,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140520410] [2020-10-29 03:32:45,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:45,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:45,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:45,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:45,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 03:32:45,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:45,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-29 03:32:45,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:45,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:32:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:32:45,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:46,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:46,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:46,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:46,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:46,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:46,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:46,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:46,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:46,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:46,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:46,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:46,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:46,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:32:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:46,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:46,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:46,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:46,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:46,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:32:46,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:46,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:46,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:46,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:32:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:46,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:46,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:46,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:46,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:46,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:32:46,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:46,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:46,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:46,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:46,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:46,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:46,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:32:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:46,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:46,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:46,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:46,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:46,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:32:46,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:46,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:46,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:46,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:46,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:46,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:46,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 03:32:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:46,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:46,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:46,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:46,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:46,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:46,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:46,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:46,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:46,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:46,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:46,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:46,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 03:32:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:46,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:46,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:46,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:46,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:46,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:46,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:46,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:46,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:46,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:46,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:46,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:46,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 03:32:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:46,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:46,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:46,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:46,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:46,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:46,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:46,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:46,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:46,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:46,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 03:32:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:46,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:46,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:46,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:46,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:46,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:46,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:46,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:46,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:46,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:46,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-29 03:32:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:46,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:46,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:46,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:46,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:46,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:32:46,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:46,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:46,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:46,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:46,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:46,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:46,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-29 03:32:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:46,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:46,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:46,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:46,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:46,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:46,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:46,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:46,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:46,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:32:46,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:46,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:46,088 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 18 proven. 117 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-29 03:32:46,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140520410] [2020-10-29 03:32:46,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:46,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:32:46,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627464689] [2020-10-29 03:32:46,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:32:46,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:46,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:32:46,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:32:46,090 INFO L87 Difference]: Start difference. First operand 223 states and 254 transitions. Second operand 13 states. [2020-10-29 03:32:46,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:46,290 INFO L93 Difference]: Finished difference Result 394 states and 442 transitions. [2020-10-29 03:32:46,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:32:46,290 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 116 [2020-10-29 03:32:46,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:46,292 INFO L225 Difference]: With dead ends: 394 [2020-10-29 03:32:46,292 INFO L226 Difference]: Without dead ends: 233 [2020-10-29 03:32:46,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:32:46,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-29 03:32:46,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 229. [2020-10-29 03:32:46,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-29 03:32:46,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 262 transitions. [2020-10-29 03:32:46,338 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 262 transitions. Word has length 116 [2020-10-29 03:32:46,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:46,338 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 262 transitions. [2020-10-29 03:32:46,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:32:46,338 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 262 transitions. [2020-10-29 03:32:46,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 03:32:46,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:46,339 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:46,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 03:32:46,340 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:46,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:46,340 INFO L82 PathProgramCache]: Analyzing trace with hash 871167558, now seen corresponding path program 26 times [2020-10-29 03:32:46,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:46,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526758808] [2020-10-29 03:32:46,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:46,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:46,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:47,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:48,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:48,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-29 03:32:48,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:32:48,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1711 [2020-10-29 03:32:48,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:48,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:32:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 03:32:48,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:49,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:49,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:49,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:49,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:49,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:49,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:49,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:49,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:49,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:49,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:49,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:49,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:49,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:32:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:49,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:49,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:49,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:49,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:49,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:49,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:49,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:49,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:49,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:49,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:49,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:49,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 03:32:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:49,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:49,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:49,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:49,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:49,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:49,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:49,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:49,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:49,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:49,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:49,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:49,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 03:32:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:49,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:49,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:49,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:49,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:49,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:49,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:49,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:49,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:49,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:49,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:49,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:49,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 03:32:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:49,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:49,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:49,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:49,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:49,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:49,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:49,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:49,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:49,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:49,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:49,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:49,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 03:32:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:49,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:49,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:49,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:49,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:49,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:49,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:49,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:49,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:49,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:49,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:49,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:49,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 03:32:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:49,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:49,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:49,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:49,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:49,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:49,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:49,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:49,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:49,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-29 03:32:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:49,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:49,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:49,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:49,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:49,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:49,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:49,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:49,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:49,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:49,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:49,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:49,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 03:32:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:49,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:49,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:49,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:49,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:49,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:49,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:49,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:49,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:49,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:49,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:49,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:49,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-29 03:32:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:49,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:49,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:49,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:49,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:49,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:49,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:49,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:49,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:49,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:49,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:49,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:49,984 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 18 proven. 307 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-29 03:32:49,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526758808] [2020-10-29 03:32:49,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:49,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:32:49,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200479011] [2020-10-29 03:32:49,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:32:49,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:49,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:32:49,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=754, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:32:49,986 INFO L87 Difference]: Start difference. First operand 229 states and 262 transitions. Second operand 29 states. [2020-10-29 03:32:54,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:54,064 INFO L93 Difference]: Finished difference Result 350 states and 421 transitions. [2020-10-29 03:32:54,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:32:54,066 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 119 [2020-10-29 03:32:54,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:54,068 INFO L225 Difference]: With dead ends: 350 [2020-10-29 03:32:54,068 INFO L226 Difference]: Without dead ends: 346 [2020-10-29 03:32:54,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=114, Invalid=1608, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:32:54,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-29 03:32:54,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 276. [2020-10-29 03:32:54,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-29 03:32:54,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 330 transitions. [2020-10-29 03:32:54,110 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 330 transitions. Word has length 119 [2020-10-29 03:32:54,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:54,110 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 330 transitions. [2020-10-29 03:32:54,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:32:54,111 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 330 transitions. [2020-10-29 03:32:54,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 03:32:54,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:54,112 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:54,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 03:32:54,112 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:54,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:54,113 INFO L82 PathProgramCache]: Analyzing trace with hash 702382902, now seen corresponding path program 9 times [2020-10-29 03:32:54,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:54,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074667378] [2020-10-29 03:32:54,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:54,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:54,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:54,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:55,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:55,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 03:32:55,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:32:55,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1367 [2020-10-29 03:32:55,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:55,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:55,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:32:55,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:55,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 03:32:55,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:57,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:57,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:57,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:57,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:57,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:57,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:57,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:57,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:57,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:57,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:57,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:57,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:57,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 03:32:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:57,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:57,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:57,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:57,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:57,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:57,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:57,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:57,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:57,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:57,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:57,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:57,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:32:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:57,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:57,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:57,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:57,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:57,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:57,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:57,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:57,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:57,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:57,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:57,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:57,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 03:32:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:57,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:57,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:57,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:57,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:57,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:57,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:57,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:57,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:57,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:57,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:57,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:57,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 03:32:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:57,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:57,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:57,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:57,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:57,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:57,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:57,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:57,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:57,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 03:32:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:57,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:57,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:57,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:57,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:57,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:57,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:57,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:57,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:57,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:57,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:57,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:57,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 03:32:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:57,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:57,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:57,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:57,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:57,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:57,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:57,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:57,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:57,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:57,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:57,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:57,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 03:32:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:57,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:57,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:57,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:57,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:57,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:57,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:57,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:57,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:57,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:57,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:57,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:57,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-29 03:32:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:57,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:57,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:57,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:57,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:57,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:57,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:57,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:57,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:57,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:57,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:57,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:57,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-29 03:32:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:57,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:57,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:57,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:32:57,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:57,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:57,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:57,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:32:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:32:57,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:57,482 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 18 proven. 307 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-29 03:32:57,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074667378] [2020-10-29 03:32:57,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:57,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:32:57,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043394315] [2020-10-29 03:32:57,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:32:57,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:57,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:32:57,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:32:57,484 INFO L87 Difference]: Start difference. First operand 276 states and 330 transitions. Second operand 27 states. [2020-10-29 03:33:01,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:01,471 INFO L93 Difference]: Finished difference Result 307 states and 364 transitions. [2020-10-29 03:33:01,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:33:01,471 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 120 [2020-10-29 03:33:01,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:01,473 INFO L225 Difference]: With dead ends: 307 [2020-10-29 03:33:01,473 INFO L226 Difference]: Without dead ends: 303 [2020-10-29 03:33:01,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=112, Invalid=1528, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:33:01,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-29 03:33:01,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 284. [2020-10-29 03:33:01,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-10-29 03:33:01,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 338 transitions. [2020-10-29 03:33:01,528 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 338 transitions. Word has length 120 [2020-10-29 03:33:01,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:01,529 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 338 transitions. [2020-10-29 03:33:01,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:33:01,529 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 338 transitions. [2020-10-29 03:33:01,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 03:33:01,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:01,530 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:01,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 03:33:01,531 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:01,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:01,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1208256978, now seen corresponding path program 27 times [2020-10-29 03:33:01,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:01,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587996972] [2020-10-29 03:33:01,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:01,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:01,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:02,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:03,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:03,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 03:33:03,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:33:03,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1611 [2020-10-29 03:33:03,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:03,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:03,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:33:03,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:03,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-29 03:33:03,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:03,427 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2020-10-29 03:33:03,580 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2020-10-29 03:33:03,738 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-10-29 03:33:03,949 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 32 [2020-10-29 03:33:04,133 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2020-10-29 03:33:04,367 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-10-29 03:33:04,597 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 32 [2020-10-29 03:33:04,807 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2020-10-29 03:33:05,043 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 32 [2020-10-29 03:33:05,255 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 38 [2020-10-29 03:33:05,556 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2020-10-29 03:33:05,843 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2020-10-29 03:33:06,044 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2020-10-29 03:33:07,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:07,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:07,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:07,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:07,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:07,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:07,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:07,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:07,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:07,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:33:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:07,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:07,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:07,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:07,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:07,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:07,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:07,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:07,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:07,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:07,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:07,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:07,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 03:33:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:07,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:07,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:07,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:07,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:07,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:07,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:07,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:07,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:07,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:07,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 03:33:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:07,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:07,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:07,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:07,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:07,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:07,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:07,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:07,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:07,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:07,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:07,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:07,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 03:33:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:07,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:07,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:07,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:07,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:07,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:07,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:07,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:07,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:07,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:07,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:07,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:07,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 03:33:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:07,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:07,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:07,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:07,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:07,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:07,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:07,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:07,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:07,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:07,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:07,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:07,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 03:33:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:07,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:07,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:07,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:07,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:07,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:07,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:07,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:07,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:07,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:07,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:07,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:07,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 03:33:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:07,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:07,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:07,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:07,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:07,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:07,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:07,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:07,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:07,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:07,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:07,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:07,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-29 03:33:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:07,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:07,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:07,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:07,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:07,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:07,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:07,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:07,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:07,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 03:33:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:07,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:07,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:07,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:07,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:07,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:07,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:07,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:07,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:07,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:07,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:07,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 18 proven. 338 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-29 03:33:07,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587996972] [2020-10-29 03:33:07,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:07,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:33:07,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735357507] [2020-10-29 03:33:07,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:33:07,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:07,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:33:07,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=807, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:33:07,249 INFO L87 Difference]: Start difference. First operand 284 states and 338 transitions. Second operand 30 states. [2020-10-29 03:33:07,562 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-29 03:33:07,772 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-29 03:33:08,033 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-29 03:33:08,277 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-29 03:33:08,537 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-29 03:33:08,793 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-29 03:33:09,040 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-29 03:33:09,300 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-29 03:33:09,542 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-29 03:33:09,815 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-29 03:33:10,041 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-29 03:33:10,525 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2020-10-29 03:33:11,133 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-29 03:33:11,478 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-29 03:33:11,795 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-29 03:33:12,094 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-29 03:33:12,392 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-29 03:33:12,697 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-29 03:33:13,006 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-29 03:33:13,327 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2020-10-29 03:33:13,652 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2020-10-29 03:33:13,876 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2020-10-29 03:33:14,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:14,331 INFO L93 Difference]: Finished difference Result 363 states and 434 transitions. [2020-10-29 03:33:14,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 03:33:14,331 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 122 [2020-10-29 03:33:14,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:14,333 INFO L225 Difference]: With dead ends: 363 [2020-10-29 03:33:14,333 INFO L226 Difference]: Without dead ends: 359 [2020-10-29 03:33:14,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=182, Invalid=2788, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 03:33:14,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-29 03:33:14,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 245. [2020-10-29 03:33:14,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-29 03:33:14,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 279 transitions. [2020-10-29 03:33:14,382 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 279 transitions. Word has length 122 [2020-10-29 03:33:14,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:14,382 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 279 transitions. [2020-10-29 03:33:14,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:33:14,382 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 279 transitions. [2020-10-29 03:33:14,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 03:33:14,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:14,384 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:14,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 03:33:14,384 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:14,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:14,385 INFO L82 PathProgramCache]: Analyzing trace with hash -163717587, now seen corresponding path program 28 times [2020-10-29 03:33:14,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:14,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195860233] [2020-10-29 03:33:14,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:14,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:14,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:15,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:15,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 03:33:15,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:15,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 982 [2020-10-29 03:33:15,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:15,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:15,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:33:15,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:15,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 03:33:15,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:15,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:15,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:15,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:15,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:15,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:15,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:15,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:15,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:15,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:15,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:33:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:15,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:15,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:15,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:15,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:15,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:33:15,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:15,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:33:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:15,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:15,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 03:33:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:15,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:15,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:15,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:15,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:15,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:33:15,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:15,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:33:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:15,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:15,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 03:33:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:15,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:15,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:15,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:15,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:15,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:33:15,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:15,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:15,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:33:15,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:15,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:15,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 03:33:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:15,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:15,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:15,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:15,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:15,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:33:15,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:15,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:15,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:33:15,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:15,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:15,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 03:33:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:15,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:15,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:15,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:15,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:15,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:33:15,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:15,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:15,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:15,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:33:15,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:15,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:15,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 03:33:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:15,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:15,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:15,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:15,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:15,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:15,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:15,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:15,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:15,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:33:15,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:15,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:15,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-29 03:33:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:15,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:15,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:15,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:15,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:15,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:33:15,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:15,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:15,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:15,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:33:15,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:15,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:15,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 03:33:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:15,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:15,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:15,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:15,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:15,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:15,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:15,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:15,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:15,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:33:15,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:15,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:15,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-29 03:33:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:15,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:15,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:15,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:15,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:15,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:15,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:15,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:15,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:15,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:33:15,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:15,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:15,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-29 03:33:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:15,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:15,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:15,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:15,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:15,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:15,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:15,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:15,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:15,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:33:15,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:15,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:15,608 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 20 proven. 145 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-10-29 03:33:15,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195860233] [2020-10-29 03:33:15,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:15,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:33:15,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336537024] [2020-10-29 03:33:15,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:33:15,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:15,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:33:15,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:33:15,610 INFO L87 Difference]: Start difference. First operand 245 states and 279 transitions. Second operand 14 states. [2020-10-29 03:33:15,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:15,799 INFO L93 Difference]: Finished difference Result 432 states and 484 transitions. [2020-10-29 03:33:15,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:33:15,804 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 127 [2020-10-29 03:33:15,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:15,806 INFO L225 Difference]: With dead ends: 432 [2020-10-29 03:33:15,806 INFO L226 Difference]: Without dead ends: 255 [2020-10-29 03:33:15,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:33:15,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-29 03:33:15,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 251. [2020-10-29 03:33:15,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-29 03:33:15,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 287 transitions. [2020-10-29 03:33:15,848 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 287 transitions. Word has length 127 [2020-10-29 03:33:15,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:15,848 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 287 transitions. [2020-10-29 03:33:15,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:33:15,848 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 287 transitions. [2020-10-29 03:33:15,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 03:33:15,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:15,850 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:15,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 03:33:15,850 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:15,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:15,851 INFO L82 PathProgramCache]: Analyzing trace with hash -580782571, now seen corresponding path program 29 times [2020-10-29 03:33:15,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:15,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795559472] [2020-10-29 03:33:15,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:15,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:15,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:16,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:18,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:18,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 03:33:18,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:33:18,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2214 [2020-10-29 03:33:18,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:18,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:18,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:33:18,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:18,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 03:33:18,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:19,376 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-10-29 03:33:20,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:20,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:20,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:20,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:20,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:20,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:20,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:20,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:20,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:20,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:20,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:20,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:20,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:33:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:20,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:20,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:20,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:20,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:20,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:20,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:20,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:20,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:20,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:20,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:20,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:20,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 03:33:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:20,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:20,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:20,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:20,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:20,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:20,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:20,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:20,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:20,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:20,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:20,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:20,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 03:33:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:20,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:20,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:20,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:20,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:20,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:20,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:20,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:20,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:20,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:20,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:20,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:20,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 03:33:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:20,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:20,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:20,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:20,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:20,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:20,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:20,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:20,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:20,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:20,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:20,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:20,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 03:33:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:20,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:20,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:20,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:20,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:20,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:20,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:20,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:20,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:20,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:20,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:20,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:20,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 03:33:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:20,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:20,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:20,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:20,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:20,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:20,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:20,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:20,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:20,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:20,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:20,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:20,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 03:33:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:20,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:20,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:20,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:20,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:20,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:20,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:20,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:20,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:20,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:20,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-29 03:33:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:20,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:20,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:20,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:20,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:20,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:20,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:20,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:20,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:20,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 03:33:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:20,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:20,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:20,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:20,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:20,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:20,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:20,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:20,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:20,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:20,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:20,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:20,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-29 03:33:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:20,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:20,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:20,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:20,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:20,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:20,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:20,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:20,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:20,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:20,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:20,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:20,535 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 20 proven. 376 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-29 03:33:20,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795559472] [2020-10-29 03:33:20,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:20,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:33:20,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535950297] [2020-10-29 03:33:20,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:33:20,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:20,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:33:20,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=868, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:33:20,537 INFO L87 Difference]: Start difference. First operand 251 states and 287 transitions. Second operand 31 states. [2020-10-29 03:33:25,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:25,609 INFO L93 Difference]: Finished difference Result 381 states and 458 transitions. [2020-10-29 03:33:25,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:33:25,610 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 130 [2020-10-29 03:33:25,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:25,613 INFO L225 Difference]: With dead ends: 381 [2020-10-29 03:33:25,613 INFO L226 Difference]: Without dead ends: 377 [2020-10-29 03:33:25,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=122, Invalid=1858, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:33:25,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-10-29 03:33:25,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 302. [2020-10-29 03:33:25,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-10-29 03:33:25,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 361 transitions. [2020-10-29 03:33:25,680 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 361 transitions. Word has length 130 [2020-10-29 03:33:25,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:25,682 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 361 transitions. [2020-10-29 03:33:25,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:33:25,682 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 361 transitions. [2020-10-29 03:33:25,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-29 03:33:25,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:25,684 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:25,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-29 03:33:25,684 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:25,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:25,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1024958046, now seen corresponding path program 10 times [2020-10-29 03:33:25,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:25,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925319879] [2020-10-29 03:33:25,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:25,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:25,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:26,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:27,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:27,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-29 03:33:27,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:33:27,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1917 [2020-10-29 03:33:27,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:27,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:27,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:33:27,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:27,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-29 03:33:27,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:29,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:29,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:29,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:29,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:29,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:29,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:29,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:29,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:29,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:29,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:29,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:29,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:29,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 03:33:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:29,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:29,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:29,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:29,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:29,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:29,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:29,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:29,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:29,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 03:33:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:29,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:29,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:29,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:29,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:29,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:29,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:29,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:29,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:29,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:29,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:29,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:29,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 03:33:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:29,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:29,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:29,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:29,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:29,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:29,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:29,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:29,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:29,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:29,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:29,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:29,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 03:33:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:29,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:29,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:29,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:29,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:29,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:29,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:29,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:29,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:29,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:29,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 03:33:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:29,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:29,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:29,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:29,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:29,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:29,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:29,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:29,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:29,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-29 03:33:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:29,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:29,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:29,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:29,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:29,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:29,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:29,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:29,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:29,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:29,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:29,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:29,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-29 03:33:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:29,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:29,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:29,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:29,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:29,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:29,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:29,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:29,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:29,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:29,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:29,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:29,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 03:33:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:29,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:29,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:29,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:29,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:29,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:29,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:29,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:29,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:29,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:29,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:29,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:29,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-29 03:33:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:29,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:29,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:29,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:29,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:29,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:29,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:29,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:29,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:29,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 03:33:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:29,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:29,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:29,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:29,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:29,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:29,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:29,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:29,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:29,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:29,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:29,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:29,256 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 20 proven. 376 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-29 03:33:29,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925319879] [2020-10-29 03:33:29,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:29,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:33:29,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200002422] [2020-10-29 03:33:29,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:33:29,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:29,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:33:29,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=756, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:33:29,258 INFO L87 Difference]: Start difference. First operand 302 states and 361 transitions. Second operand 29 states. [2020-10-29 03:33:33,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:33,597 INFO L93 Difference]: Finished difference Result 334 states and 396 transitions. [2020-10-29 03:33:33,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:33:33,598 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 131 [2020-10-29 03:33:33,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:33,600 INFO L225 Difference]: With dead ends: 334 [2020-10-29 03:33:33,600 INFO L226 Difference]: Without dead ends: 330 [2020-10-29 03:33:33,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=117, Invalid=1689, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:33:33,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-29 03:33:33,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 310. [2020-10-29 03:33:33,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-10-29 03:33:33,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 369 transitions. [2020-10-29 03:33:33,668 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 369 transitions. Word has length 131 [2020-10-29 03:33:33,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:33,668 INFO L481 AbstractCegarLoop]: Abstraction has 310 states and 369 transitions. [2020-10-29 03:33:33,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:33:33,668 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 369 transitions. [2020-10-29 03:33:33,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 03:33:33,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:33,670 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:33,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-29 03:33:33,670 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:33,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:33,671 INFO L82 PathProgramCache]: Analyzing trace with hash -23333587, now seen corresponding path program 30 times [2020-10-29 03:33:33,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:33,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544766951] [2020-10-29 03:33:33,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:33,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:33,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:34,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:37,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:37,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 03:33:37,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:33:37,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3635 [2020-10-29 03:33:37,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:37,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:37,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:33:37,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:37,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-29 03:33:37,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:40,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:40,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:40,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:40,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:40,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:40,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:40,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:40,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:40,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:40,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:40,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:40,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:40,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:33:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:40,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:40,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:40,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:40,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:40,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:40,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:40,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:40,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:40,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:40,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:33:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:40,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:40,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:40,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:40,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:40,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:40,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:40,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:40,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:40,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:40,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:40,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:40,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:33:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:40,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:40,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:40,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:40,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:40,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:40,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:40,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:40,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:40,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:33:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:40,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:40,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:40,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:40,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:40,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:40,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:40,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:40,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:40,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 03:33:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:40,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:40,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:40,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:40,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:40,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:40,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:40,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:40,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:40,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:33:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:40,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:40,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:40,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:40,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:40,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:40,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:40,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:40,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:40,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 03:33:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:40,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:40,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:40,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:40,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:40,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:40,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:40,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:40,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:40,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:40,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:40,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 03:33:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:40,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:40,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:40,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:40,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:40,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:40,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:40,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:40,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:40,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:40,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:40,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:40,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 03:33:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:40,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:40,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:40,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:40,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:40,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:40,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:40,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:40,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:40,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 03:33:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:40,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:40,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:40,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:40,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:40,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:40,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:40,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:40,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:40,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:40,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:40,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:40,207 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 20 proven. 410 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-29 03:33:40,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544766951] [2020-10-29 03:33:40,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:40,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:33:40,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937362549] [2020-10-29 03:33:40,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:33:40,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:40,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:33:40,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=926, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:33:40,209 INFO L87 Difference]: Start difference. First operand 310 states and 369 transitions. Second operand 32 states. [2020-10-29 03:33:45,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:45,474 INFO L93 Difference]: Finished difference Result 391 states and 466 transitions. [2020-10-29 03:33:45,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:33:45,475 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 133 [2020-10-29 03:33:45,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:45,477 INFO L225 Difference]: With dead ends: 391 [2020-10-29 03:33:45,477 INFO L226 Difference]: Without dead ends: 387 [2020-10-29 03:33:45,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=138, Invalid=1932, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:33:45,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-29 03:33:45,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 267. [2020-10-29 03:33:45,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-29 03:33:45,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 304 transitions. [2020-10-29 03:33:45,529 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 304 transitions. Word has length 133 [2020-10-29 03:33:45,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:45,530 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 304 transitions. [2020-10-29 03:33:45,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:33:45,530 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 304 transitions. [2020-10-29 03:33:45,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-29 03:33:45,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:45,531 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:45,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-29 03:33:45,531 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:45,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:45,532 INFO L82 PathProgramCache]: Analyzing trace with hash -107372804, now seen corresponding path program 31 times [2020-10-29 03:33:45,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:45,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879519388] [2020-10-29 03:33:45,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:45,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:45,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:46,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:46,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-29 03:33:46,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:46,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 765 [2020-10-29 03:33:46,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:46,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:33:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:33:46,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:46,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:46,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:46,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:46,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:46,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:46,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:46,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:46,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:46,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:46,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:46,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:46,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:46,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:33:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:46,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:46,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:46,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:46,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:46,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:33:46,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:46,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:33:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:46,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:46,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 03:33:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:46,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:46,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:46,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:46,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:46,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:33:46,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:46,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:46,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:46,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:33:46,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:46,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:46,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 03:33:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:46,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:46,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:46,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:46,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:46,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:33:46,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:46,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:46,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:46,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:33:46,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:46,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:46,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 03:33:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:46,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:46,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:46,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:46,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:46,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:33:46,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:46,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:46,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:46,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:33:46,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:46,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:46,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 03:33:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:46,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:46,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:46,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:46,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:46,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:33:46,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:46,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:46,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:46,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:33:46,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:46,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:46,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 03:33:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:46,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:46,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:46,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:46,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:46,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:33:46,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:46,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:46,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:46,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:33:46,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:46,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:46,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 03:33:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:46,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:46,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:46,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:46,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:46,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:33:46,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:46,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:46,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:46,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:33:46,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:46,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:46,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-29 03:33:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:46,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:46,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:46,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:46,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:46,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:33:46,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:46,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:46,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:46,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:33:46,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:46,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:46,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 03:33:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:46,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:46,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:46,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:46,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:46,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:33:46,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:46,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:46,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:46,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:33:46,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:46,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:46,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-29 03:33:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:46,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:46,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:46,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:46,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:46,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:33:46,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:46,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:33:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:46,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:46,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 03:33:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:46,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:46,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:46,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:46,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:46,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:33:46,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:46,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:46,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:46,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:33:46,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:46,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:46,552 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 22 proven. 176 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2020-10-29 03:33:46,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879519388] [2020-10-29 03:33:46,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:46,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:33:46,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82365696] [2020-10-29 03:33:46,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:33:46,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:46,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:33:46,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:33:46,554 INFO L87 Difference]: Start difference. First operand 267 states and 304 transitions. Second operand 15 states. [2020-10-29 03:33:46,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:46,787 INFO L93 Difference]: Finished difference Result 470 states and 526 transitions. [2020-10-29 03:33:46,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:33:46,788 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 138 [2020-10-29 03:33:46,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:46,790 INFO L225 Difference]: With dead ends: 470 [2020-10-29 03:33:46,790 INFO L226 Difference]: Without dead ends: 277 [2020-10-29 03:33:46,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:33:46,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-29 03:33:46,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 273. [2020-10-29 03:33:46,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-29 03:33:46,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 312 transitions. [2020-10-29 03:33:46,840 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 312 transitions. Word has length 138 [2020-10-29 03:33:46,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:46,841 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 312 transitions. [2020-10-29 03:33:46,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:33:46,841 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 312 transitions. [2020-10-29 03:33:46,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-29 03:33:46,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:46,842 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:46,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-29 03:33:46,842 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:46,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:46,843 INFO L82 PathProgramCache]: Analyzing trace with hash -489748972, now seen corresponding path program 32 times [2020-10-29 03:33:46,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:46,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519605803] [2020-10-29 03:33:46,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:46,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:46,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:47,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:48,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:48,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-29 03:33:48,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:33:48,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1963 [2020-10-29 03:33:48,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:48,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:33:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-29 03:33:48,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:51,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:51,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:51,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:51,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:51,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:51,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:51,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:51,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:51,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:51,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:33:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:51,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:51,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:51,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:51,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:51,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:51,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:51,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:51,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:51,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:33:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:51,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:51,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:51,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:51,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:51,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:51,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:51,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:51,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:51,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:51,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:51,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:51,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:33:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:51,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:51,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:51,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:51,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:51,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:51,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:51,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:51,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:51,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:51,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:51,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:51,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:33:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:51,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:51,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:51,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:51,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:51,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:51,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:51,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:51,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:51,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 03:33:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:51,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:51,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:51,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:51,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:51,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:51,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:51,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:51,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:51,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:51,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:51,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:51,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:33:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:51,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:51,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:51,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:51,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:51,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:51,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:51,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:51,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:51,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:51,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:51,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:51,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 03:33:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:51,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:51,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:51,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:51,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:51,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:51,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:51,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:51,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:51,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:51,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:51,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:51,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 03:33:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:51,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:51,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:51,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:51,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:51,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:51,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:51,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:51,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:51,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:51,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:51,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:51,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 03:33:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:51,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:51,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:51,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:51,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:51,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:51,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:51,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:51,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:51,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:51,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:51,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:51,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 03:33:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:51,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:51,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:51,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:51,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:51,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:51,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:51,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:51,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:51,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:51,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:51,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:51,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 03:33:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:51,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:51,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:51,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:33:51,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:51,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:51,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:51,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:51,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:33:51,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:51,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:33:51,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 22 proven. 452 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-29 03:33:51,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519605803] [2020-10-29 03:33:51,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:51,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:33:51,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488855108] [2020-10-29 03:33:51,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:33:51,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:51,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:33:51,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=989, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:33:51,368 INFO L87 Difference]: Start difference. First operand 273 states and 312 transitions. Second operand 33 states. [2020-10-29 03:33:56,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:56,957 INFO L93 Difference]: Finished difference Result 406 states and 488 transitions. [2020-10-29 03:33:56,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-29 03:33:56,958 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 141 [2020-10-29 03:33:56,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:56,960 INFO L225 Difference]: With dead ends: 406 [2020-10-29 03:33:56,960 INFO L226 Difference]: Without dead ends: 402 [2020-10-29 03:33:56,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=187, Invalid=3473, Unknown=0, NotChecked=0, Total=3660 [2020-10-29 03:33:56,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-10-29 03:33:57,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 328. [2020-10-29 03:33:57,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-10-29 03:33:57,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 392 transitions. [2020-10-29 03:33:57,035 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 392 transitions. Word has length 141 [2020-10-29 03:33:57,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:57,035 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 392 transitions. [2020-10-29 03:33:57,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:33:57,036 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 392 transitions. [2020-10-29 03:33:57,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-29 03:33:57,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:57,037 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:57,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-29 03:33:57,037 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:57,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:57,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1794335522, now seen corresponding path program 11 times [2020-10-29 03:33:57,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:57,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193026778] [2020-10-29 03:33:57,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:57,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:57,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:58,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:00,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:00,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 03:34:00,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:34:00,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3212 [2020-10-29 03:34:00,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:00,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:34:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-29 03:34:00,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:02,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:02,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:02,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:02,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:02,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:02,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:02,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:02,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:02,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:02,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:02,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:02,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:02,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 03:34:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:02,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:02,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:02,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:02,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:02,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:02,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:02,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:02,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:02,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:02,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:02,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:02,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 03:34:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:02,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:02,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:02,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:02,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:02,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:02,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:02,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:02,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:02,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:02,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:02,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:02,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 03:34:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:02,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:02,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:02,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:02,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:02,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:02,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:02,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:02,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:02,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 03:34:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:02,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:02,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:02,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:02,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:02,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:02,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:02,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:02,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:02,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:02,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:02,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:02,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 03:34:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:02,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:02,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:02,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:02,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:02,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:34:02,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:02,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:02,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:02,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-29 03:34:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:02,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:02,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:02,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:02,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:02,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:02,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:02,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:02,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:02,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:02,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:02,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:02,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-29 03:34:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:02,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:02,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:02,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:02,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:02,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:02,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:02,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:02,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:02,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:02,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:02,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:02,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-29 03:34:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:02,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:02,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:02,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:02,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:02,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:34:02,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:02,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:02,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:02,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:02,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:02,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:02,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-29 03:34:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:02,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:02,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:02,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:02,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:02,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:02,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:02,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:02,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:02,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:02,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:02,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:02,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-29 03:34:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:02,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:02,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:02,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:02,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:02,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:34:02,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:02,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:02,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:02,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-29 03:34:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:02,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:02,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:02,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:02,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:02,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:34:02,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:02,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:02,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:02,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:02,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:02,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:02,823 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 22 proven. 452 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-29 03:34:02,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193026778] [2020-10-29 03:34:02,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:02,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:34:02,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175451439] [2020-10-29 03:34:02,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:34:02,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:02,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:34:02,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:34:02,824 INFO L87 Difference]: Start difference. First operand 328 states and 392 transitions. Second operand 31 states. [2020-10-29 03:34:08,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:08,391 INFO L93 Difference]: Finished difference Result 361 states and 428 transitions. [2020-10-29 03:34:08,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:34:08,392 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 142 [2020-10-29 03:34:08,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:08,394 INFO L225 Difference]: With dead ends: 361 [2020-10-29 03:34:08,395 INFO L226 Difference]: Without dead ends: 357 [2020-10-29 03:34:08,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=128, Invalid=2034, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:34:08,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-29 03:34:08,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 336. [2020-10-29 03:34:08,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-10-29 03:34:08,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 400 transitions. [2020-10-29 03:34:08,482 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 400 transitions. Word has length 142 [2020-10-29 03:34:08,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:08,482 INFO L481 AbstractCegarLoop]: Abstraction has 336 states and 400 transitions. [2020-10-29 03:34:08,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:34:08,483 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 400 transitions. [2020-10-29 03:34:08,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-29 03:34:08,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:08,484 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:08,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-29 03:34:08,484 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:08,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:08,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1604900868, now seen corresponding path program 33 times [2020-10-29 03:34:08,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:08,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600548299] [2020-10-29 03:34:08,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:08,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:08,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:09,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:11,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:11,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 03:34:11,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:34:11,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2847 [2020-10-29 03:34:11,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:11,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:11,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:34:11,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:11,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-29 03:34:11,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:12,826 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2020-10-29 03:34:13,130 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2020-10-29 03:34:14,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:14,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:14,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:14,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:14,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:14,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:34:14,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:14,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:14,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:14,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:14,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:14,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:14,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:34:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:14,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:14,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:14,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:14,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:14,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:34:14,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:14,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:14,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:14,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:14,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:14,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:14,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 03:34:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:14,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:14,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:14,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:14,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:14,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:14,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:14,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:14,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:14,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:14,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:14,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:14,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 03:34:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:14,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:14,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:14,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:14,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:14,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:14,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:14,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:14,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:14,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:14,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:14,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:14,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 03:34:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:14,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:14,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:14,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:14,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:14,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:34:14,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:14,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:14,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:14,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:14,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:14,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:14,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 03:34:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:14,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:14,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:14,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:14,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:14,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:34:14,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:14,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:14,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:14,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:14,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:14,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:14,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 03:34:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:14,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:14,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:14,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:14,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:14,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:34:14,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:14,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:14,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:14,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:14,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:14,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:14,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-29 03:34:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:14,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:14,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:14,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:14,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:14,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:34:14,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:14,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:14,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:14,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:14,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:14,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:14,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-29 03:34:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:14,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:14,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:14,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:14,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:14,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:34:14,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:14,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:14,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:14,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:14,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:14,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:14,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-29 03:34:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:14,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:14,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:14,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:14,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:14,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:34:14,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:14,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:14,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:14,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:14,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:14,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:14,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-29 03:34:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:14,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:14,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:14,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:14,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:14,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:34:14,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:14,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:14,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:14,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:14,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:14,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:14,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 03:34:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:14,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:14,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:14,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:14,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:14,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:34:14,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:14,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:14,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:14,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:14,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:14,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:14,945 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 22 proven. 489 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-29 03:34:14,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600548299] [2020-10-29 03:34:14,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:14,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:34:14,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224268988] [2020-10-29 03:34:14,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:34:14,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:14,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:34:14,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=1052, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:34:14,946 INFO L87 Difference]: Start difference. First operand 336 states and 400 transitions. Second operand 34 states. [2020-10-29 03:34:21,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:21,608 INFO L93 Difference]: Finished difference Result 476 states and 572 transitions. [2020-10-29 03:34:21,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-29 03:34:21,609 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 144 [2020-10-29 03:34:21,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:21,612 INFO L225 Difference]: With dead ends: 476 [2020-10-29 03:34:21,612 INFO L226 Difference]: Without dead ends: 472 [2020-10-29 03:34:21,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=207, Invalid=3699, Unknown=0, NotChecked=0, Total=3906 [2020-10-29 03:34:21,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-10-29 03:34:21,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 289. [2020-10-29 03:34:21,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-29 03:34:21,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 329 transitions. [2020-10-29 03:34:21,662 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 329 transitions. Word has length 144 [2020-10-29 03:34:21,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:21,662 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 329 transitions. [2020-10-29 03:34:21,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:34:21,662 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 329 transitions. [2020-10-29 03:34:21,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 03:34:21,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:21,664 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:21,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-29 03:34:21,664 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:21,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:21,664 INFO L82 PathProgramCache]: Analyzing trace with hash -189644805, now seen corresponding path program 34 times [2020-10-29 03:34:21,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:21,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37080288] [2020-10-29 03:34:21,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:21,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:21,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:22,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:22,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 03:34:22,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:34:22,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1043 [2020-10-29 03:34:22,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:22,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:22,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:34:22,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:22,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 03:34:22,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:22,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:22,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:22,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:22,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:22,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:22,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:22,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:22,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:22,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:22,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:22,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:22,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:22,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:34:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:22,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:22,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:22,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:22,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:22,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:34:22,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:22,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:22,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:22,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:34:22,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:22,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:22,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:34:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:22,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:22,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:22,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:22,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:22,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:34:22,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:22,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:22,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:22,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:34:22,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:22,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:22,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:34:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:22,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:22,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:22,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:22,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:22,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:34:22,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:22,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:22,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:22,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:34:22,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:22,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:22,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:34:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:22,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:22,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:22,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:22,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:22,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:34:22,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:22,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:22,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:22,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:34:22,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:22,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:22,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 03:34:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:22,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:22,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:22,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:22,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:22,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:34:22,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:22,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:34:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:22,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:22,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:34:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:22,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:22,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:22,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:22,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:22,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:34:22,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:22,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:22,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:22,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:34:22,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:22,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:22,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 03:34:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:22,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:22,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:22,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:22,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:22,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:34:22,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:22,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:22,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:22,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:34:22,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:22,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:22,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 03:34:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:22,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:22,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:22,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:22,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:22,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:34:22,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:22,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:22,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:34:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:22,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:22,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 03:34:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:22,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:22,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:22,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:22,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:22,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:34:22,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:22,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:22,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:22,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:34:22,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:22,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:22,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 03:34:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:22,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:22,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:22,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:22,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:22,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:34:22,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:22,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:22,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:22,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:34:22,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:22,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:22,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 03:34:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:22,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:22,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:22,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:22,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:22,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:22,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:22,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:22,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:22,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:34:22,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:22,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:22,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 03:34:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:22,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:22,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:22,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:22,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:22,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:34:22,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:22,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:34:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:22,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 24 proven. 210 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2020-10-29 03:34:22,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37080288] [2020-10-29 03:34:22,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:22,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:34:22,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273840863] [2020-10-29 03:34:22,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:34:22,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:22,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:34:22,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:34:22,988 INFO L87 Difference]: Start difference. First operand 289 states and 329 transitions. Second operand 16 states. [2020-10-29 03:34:23,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:23,200 INFO L93 Difference]: Finished difference Result 508 states and 568 transitions. [2020-10-29 03:34:23,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:34:23,201 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 149 [2020-10-29 03:34:23,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:23,204 INFO L225 Difference]: With dead ends: 508 [2020-10-29 03:34:23,204 INFO L226 Difference]: Without dead ends: 299 [2020-10-29 03:34:23,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:34:23,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-29 03:34:23,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 295. [2020-10-29 03:34:23,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-29 03:34:23,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 337 transitions. [2020-10-29 03:34:23,262 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 337 transitions. Word has length 149 [2020-10-29 03:34:23,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:23,262 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 337 transitions. [2020-10-29 03:34:23,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:34:23,262 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 337 transitions. [2020-10-29 03:34:23,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-29 03:34:23,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:23,263 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:23,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-29 03:34:23,264 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:23,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:23,264 INFO L82 PathProgramCache]: Analyzing trace with hash -628229661, now seen corresponding path program 35 times [2020-10-29 03:34:23,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:23,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270400424] [2020-10-29 03:34:23,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:23,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:23,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:24,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking...