/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_init9_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:42:08,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:42:08,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:42:08,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:42:08,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:42:08,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:42:08,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:42:08,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:42:08,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:42:08,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:42:08,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:42:08,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:42:08,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:42:08,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:42:08,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:42:08,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:42:08,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:42:08,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:42:08,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:42:08,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:42:08,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:42:08,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:42:08,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:42:08,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:42:08,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:42:08,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:42:08,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:42:08,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:42:08,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:42:08,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:42:08,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:42:08,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:42:08,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:42:08,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:42:08,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:42:08,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:42:08,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:42:08,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:42:08,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:42:08,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:42:08,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:42:08,863 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 03:42:08,921 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:42:08,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:42:08,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:42:08,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:42:08,928 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:42:08,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:42:08,929 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:42:08,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:42:08,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:42:08,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:42:08,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:42:08,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:42:08,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:42:08,932 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:42:08,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:42:08,932 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:42:08,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:42:08,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:42:08,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:42:08,933 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:42:08,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:42:08,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:42:08,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:42:08,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:42:08,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:42:08,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:42:08,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:42:08,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:42:08,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:42:08,936 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:42:09,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:42:09,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:42:09,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:42:09,423 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:42:09,424 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:42:09,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init9_ground-1.i [2020-10-29 03:42:09,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a5b426ae/7041b8e3c86e42c38a3d9106323f95c7/FLAG4d8aa126d [2020-10-29 03:42:10,280 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:42:10,281 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_init9_ground-1.i [2020-10-29 03:42:10,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a5b426ae/7041b8e3c86e42c38a3d9106323f95c7/FLAG4d8aa126d [2020-10-29 03:42:10,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a5b426ae/7041b8e3c86e42c38a3d9106323f95c7 [2020-10-29 03:42:10,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:42:10,605 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:42:10,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:42:10,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:42:10,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:42:10,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:42:10" (1/1) ... [2020-10-29 03:42:10,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187ad513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:10, skipping insertion in model container [2020-10-29 03:42:10,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:42:10" (1/1) ... [2020-10-29 03:42:10,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:42:10,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:42:10,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:42:10,850 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:42:10,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:42:10,903 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:42:10,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:10 WrapperNode [2020-10-29 03:42:10,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:42:10,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:42:10,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:42:10,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:42:10,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:10" (1/1) ... [2020-10-29 03:42:10,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:10" (1/1) ... [2020-10-29 03:42:10,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:10" (1/1) ... [2020-10-29 03:42:10,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:10" (1/1) ... [2020-10-29 03:42:10,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:10" (1/1) ... [2020-10-29 03:42:10,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:10" (1/1) ... [2020-10-29 03:42:10,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:10" (1/1) ... [2020-10-29 03:42:10,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:42:10,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:42:10,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:42:10,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:42:10,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:10" (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 03:42:11,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:42:11,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:42:11,045 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:42:11,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:42:11,046 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:42:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:42:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:42:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:42:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:42:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:42:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:42:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:42:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:42:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:42:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:42:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:42:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:42:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:42:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:42:11,411 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:42:11,411 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-29 03:42:11,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:42:11 BoogieIcfgContainer [2020-10-29 03:42:11,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:42:11,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:42:11,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:42:11,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:42:11,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:42:10" (1/3) ... [2020-10-29 03:42:11,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cac054b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:42:11, skipping insertion in model container [2020-10-29 03:42:11,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:10" (2/3) ... [2020-10-29 03:42:11,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cac054b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:42:11, skipping insertion in model container [2020-10-29 03:42:11,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:42:11" (3/3) ... [2020-10-29 03:42:11,447 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init9_ground-1.i [2020-10-29 03:42:11,462 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:42:11,467 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:42:11,482 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:42:11,524 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:42:11,524 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:42:11,524 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:42:11,524 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:42:11,525 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:42:11,525 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:42:11,525 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:42:11,525 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:42:11,545 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-29 03:42:11,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 03:42:11,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:11,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:11,554 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:11,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:11,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1430342186, now seen corresponding path program 1 times [2020-10-29 03:42:11,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:11,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110496815] [2020-10-29 03:42:11,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:11,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:11,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:11,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:11,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:11,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:12,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:12,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:12,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:12,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:16,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:16,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 03:42:16,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:42:16,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 03:42:16,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:16,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:42:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 03:42:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:42:16,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:42:16,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:16,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:16,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:16,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:16,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:16,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:42:16,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:16,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:16,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:16,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:16,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:16,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:16,832 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 03:42:16,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110496815] [2020-10-29 03:42:16,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:42:16,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:42:16,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507126952] [2020-10-29 03:42:16,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:42:16,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:16,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:42:16,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:42:16,864 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-29 03:42:17,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:17,064 INFO L93 Difference]: Finished difference Result 87 states and 147 transitions. [2020-10-29 03:42:17,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:42:17,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-29 03:42:17,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:17,076 INFO L225 Difference]: With dead ends: 87 [2020-10-29 03:42:17,076 INFO L226 Difference]: Without dead ends: 45 [2020-10-29 03:42:17,080 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 03:42:17,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-29 03:42:17,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-29 03:42:17,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 03:42:17,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-29 03:42:17,133 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 31 [2020-10-29 03:42:17,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:17,134 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-29 03:42:17,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:42:17,134 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-29 03:42:17,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 03:42:17,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:17,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:17,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:42:17,137 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:17,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:17,138 INFO L82 PathProgramCache]: Analyzing trace with hash -2143673916, now seen corresponding path program 1 times [2020-10-29 03:42:17,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:17,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360769749] [2020-10-29 03:42:17,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:17,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:17,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:17,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:17,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:17,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:17,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:17,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:17,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:19,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:22,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:22,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:42:22,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:42:22,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:42:22,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:22,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:42:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 03:42:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 03:42:22,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:42:22,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:22,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:22,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:22,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:22,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:22,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:42:22,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:22,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:22,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:22,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:22,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:22,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:22,293 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 03:42:22,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360769749] [2020-10-29 03:42:22,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:22,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:42:22,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338391387] [2020-10-29 03:42:22,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:42:22,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:22,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:42:22,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:42:22,304 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 5 states. [2020-10-29 03:42:22,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:22,620 INFO L93 Difference]: Finished difference Result 91 states and 117 transitions. [2020-10-29 03:42:22,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:42:22,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-29 03:42:22,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:22,622 INFO L225 Difference]: With dead ends: 91 [2020-10-29 03:42:22,622 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 03:42:22,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 03:42:22,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 03:42:22,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-29 03:42:22,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 03:42:22,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-10-29 03:42:22,651 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 40 [2020-10-29 03:42:22,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:22,652 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-10-29 03:42:22,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:42:22,654 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-10-29 03:42:22,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 03:42:22,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:22,658 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:22,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:42:22,659 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:22,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:22,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1385563250, now seen corresponding path program 2 times [2020-10-29 03:42:22,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:22,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120175954] [2020-10-29 03:42:22,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:22,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:22,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:22,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:22,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:22,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:22,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:23,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:25,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:27,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:27,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 03:42:27,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:42:27,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:42:27,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:27,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:27,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:42:27,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 03:42:27,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:42:27,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:27,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:27,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:27,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:27,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:27,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:27,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:27,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:27,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:27,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:27,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:27,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:27,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:27,767 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 03:42:27,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120175954] [2020-10-29 03:42:27,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:27,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:42:27,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109158892] [2020-10-29 03:42:27,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:42:27,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:27,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:42:27,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:42:27,771 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 6 states. [2020-10-29 03:42:27,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:27,963 INFO L93 Difference]: Finished difference Result 108 states and 134 transitions. [2020-10-29 03:42:27,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:42:27,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-10-29 03:42:27,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:27,965 INFO L225 Difference]: With dead ends: 108 [2020-10-29 03:42:27,966 INFO L226 Difference]: Without dead ends: 63 [2020-10-29 03:42:27,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 03:42:27,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-29 03:42:27,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-29 03:42:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 03:42:27,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2020-10-29 03:42:27,978 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 49 [2020-10-29 03:42:27,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:27,978 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2020-10-29 03:42:27,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:42:27,978 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2020-10-29 03:42:27,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 03:42:27,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:27,980 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:27,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:42:27,980 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:27,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:27,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1838870524, now seen corresponding path program 3 times [2020-10-29 03:42:27,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:27,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967045715] [2020-10-29 03:42:27,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:28,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:33,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:33,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:42:33,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:42:33,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:42:33,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:33,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:33,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:42:33,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 03:42:33,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 03:42:33,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:33,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:33,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:33,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:33,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:33,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:33,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:33,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:33,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:33,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:33,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:33,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:33,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-29 03:42:33,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967045715] [2020-10-29 03:42:33,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:33,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:42:33,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919273728] [2020-10-29 03:42:33,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:42:33,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:33,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:42:33,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:42:33,124 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 7 states. [2020-10-29 03:42:33,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:33,320 INFO L93 Difference]: Finished difference Result 125 states and 151 transitions. [2020-10-29 03:42:33,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:42:33,321 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2020-10-29 03:42:33,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:33,322 INFO L225 Difference]: With dead ends: 125 [2020-10-29 03:42:33,322 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 03:42:33,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 03:42:33,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 03:42:33,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-29 03:42:33,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-29 03:42:33,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2020-10-29 03:42:33,337 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 58 [2020-10-29 03:42:33,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:33,337 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2020-10-29 03:42:33,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:42:33,337 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2020-10-29 03:42:33,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 03:42:33,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:33,344 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:33,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:42:33,345 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:33,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:33,345 INFO L82 PathProgramCache]: Analyzing trace with hash -632270770, now seen corresponding path program 4 times [2020-10-29 03:42:33,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:33,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331204208] [2020-10-29 03:42:33,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:33,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:33,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:33,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:33,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:33,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:33,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:33,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:38,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:38,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 03:42:38,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:42:38,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:42:38,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:38,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:38,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:42:38,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 03:42:38,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:42:38,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:38,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:38,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:38,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:38,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:38,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:38,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:42:38,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:38,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:38,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:38,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:38,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:38,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:38,521 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-29 03:42:38,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331204208] [2020-10-29 03:42:38,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:38,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:42:38,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187884895] [2020-10-29 03:42:38,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:42:38,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:38,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:42:38,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:42:38,525 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 8 states. [2020-10-29 03:42:38,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:38,813 INFO L93 Difference]: Finished difference Result 142 states and 168 transitions. [2020-10-29 03:42:38,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:42:38,814 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-29 03:42:38,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:38,815 INFO L225 Difference]: With dead ends: 142 [2020-10-29 03:42:38,815 INFO L226 Difference]: Without dead ends: 81 [2020-10-29 03:42:38,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 03:42:38,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-29 03:42:38,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-29 03:42:38,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 03:42:38,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-10-29 03:42:38,827 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 67 [2020-10-29 03:42:38,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:38,827 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-10-29 03:42:38,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:42:38,828 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-10-29 03:42:38,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 03:42:38,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:38,829 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:38,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:42:38,829 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:38,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:38,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1934823868, now seen corresponding path program 5 times [2020-10-29 03:42:38,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:38,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342466084] [2020-10-29 03:42:38,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:38,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:38,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:39,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:39,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:39,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:39,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:43,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:43,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:43,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 03:42:43,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:42:43,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:42:43,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:43,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:43,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:42:43,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 03:42:43,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:42:43,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:44,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:44,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:44,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:44,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:44,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:44,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:44,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:44,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:44,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:44,024 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-29 03:42:44,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342466084] [2020-10-29 03:42:44,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:44,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:42:44,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898220026] [2020-10-29 03:42:44,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:42:44,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:44,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:42:44,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:42:44,027 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 9 states. [2020-10-29 03:42:44,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:44,290 INFO L93 Difference]: Finished difference Result 159 states and 185 transitions. [2020-10-29 03:42:44,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:42:44,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-10-29 03:42:44,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:44,293 INFO L225 Difference]: With dead ends: 159 [2020-10-29 03:42:44,293 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 03:42:44,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 03:42:44,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 03:42:44,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-29 03:42:44,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 03:42:44,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2020-10-29 03:42:44,320 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 76 [2020-10-29 03:42:44,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:44,321 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2020-10-29 03:42:44,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:42:44,321 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2020-10-29 03:42:44,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 03:42:44,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:44,322 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:44,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:42:44,323 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:44,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:44,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1825781006, now seen corresponding path program 6 times [2020-10-29 03:42:44,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:44,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691026463] [2020-10-29 03:42:44,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:44,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:44,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:44,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:44,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:44,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:44,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:49,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:49,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 03:42:49,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:42:49,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:42:49,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:49,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:49,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:42:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:42:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:42:49,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:49,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:49,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:49,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:49,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:49,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:49,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:49,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:49,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:49,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:49,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:49,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:49,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-29 03:42:49,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691026463] [2020-10-29 03:42:49,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:49,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:42:49,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257673886] [2020-10-29 03:42:49,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:42:49,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:49,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:42:49,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:42:49,484 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 10 states. [2020-10-29 03:42:49,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:49,788 INFO L93 Difference]: Finished difference Result 176 states and 202 transitions. [2020-10-29 03:42:49,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:42:49,789 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-10-29 03:42:49,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:49,790 INFO L225 Difference]: With dead ends: 176 [2020-10-29 03:42:49,790 INFO L226 Difference]: Without dead ends: 99 [2020-10-29 03:42:49,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 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 03:42:49,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-29 03:42:49,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-29 03:42:49,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 03:42:49,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2020-10-29 03:42:49,802 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 85 [2020-10-29 03:42:49,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:49,803 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2020-10-29 03:42:49,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:42:49,803 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2020-10-29 03:42:49,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 03:42:49,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:49,804 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:49,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:42:49,805 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:49,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:49,805 INFO L82 PathProgramCache]: Analyzing trace with hash -773997436, now seen corresponding path program 7 times [2020-10-29 03:42:49,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:49,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694798457] [2020-10-29 03:42:49,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:49,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:49,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:49,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:49,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:50,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:50,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:54,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:54,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 03:42:54,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:42:54,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:42:54,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:54,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:54,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:42:54,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 03:42:54,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 03:42:54,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:54,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:54,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:54,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:54,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:54,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:54,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:54,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:54,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:54,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:54,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:54,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:54,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:54,987 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2020-10-29 03:42:54,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694798457] [2020-10-29 03:42:54,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:54,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:42:54,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998098417] [2020-10-29 03:42:54,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:42:54,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:54,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:42:54,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:42:54,991 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand 11 states. [2020-10-29 03:42:55,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:55,297 INFO L93 Difference]: Finished difference Result 193 states and 219 transitions. [2020-10-29 03:42:55,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:42:55,297 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-10-29 03:42:55,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:55,298 INFO L225 Difference]: With dead ends: 193 [2020-10-29 03:42:55,298 INFO L226 Difference]: Without dead ends: 108 [2020-10-29 03:42:55,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:42:55,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-29 03:42:55,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-29 03:42:55,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-29 03:42:55,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2020-10-29 03:42:55,323 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 94 [2020-10-29 03:42:55,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:55,323 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2020-10-29 03:42:55,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:42:55,325 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2020-10-29 03:42:55,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 03:42:55,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:55,333 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:55,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:42:55,334 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:55,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:55,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1478928846, now seen corresponding path program 8 times [2020-10-29 03:42:55,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:55,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620994750] [2020-10-29 03:42:55,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:55,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:55,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:55,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:55,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:55,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:55,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:00,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:00,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 03:43:00,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:00,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:43:00,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:00,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:00,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:43:00,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:43:00,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:43:00,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:00,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:00,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:00,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:00,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:00,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:00,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:00,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:00,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:00,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:00,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:00,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:00,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:00,529 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-10-29 03:43:00,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620994750] [2020-10-29 03:43:00,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:00,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:43:00,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049617107] [2020-10-29 03:43:00,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:43:00,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:00,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:43:00,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:43:00,541 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand 12 states. [2020-10-29 03:43:00,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:00,931 INFO L93 Difference]: Finished difference Result 210 states and 236 transitions. [2020-10-29 03:43:00,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:43:00,931 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 103 [2020-10-29 03:43:00,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:00,932 INFO L225 Difference]: With dead ends: 210 [2020-10-29 03:43:00,932 INFO L226 Difference]: Without dead ends: 117 [2020-10-29 03:43:00,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 03:43:00,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-29 03:43:00,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-10-29 03:43:00,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-29 03:43:00,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 126 transitions. [2020-10-29 03:43:00,946 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 126 transitions. Word has length 103 [2020-10-29 03:43:00,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:00,947 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 126 transitions. [2020-10-29 03:43:00,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:43:00,947 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 126 transitions. [2020-10-29 03:43:00,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 03:43:00,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:00,948 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:00,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:43:00,949 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:00,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:00,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1875081924, now seen corresponding path program 9 times [2020-10-29 03:43:00,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:00,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327865932] [2020-10-29 03:43:00,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:01,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:01,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:01,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:01,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:01,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:01,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:05,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:05,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 03:43:05,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:05,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:43:05,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:05,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:05,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:43:05,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 03:43:05,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 03:43:05,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:06,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:06,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:06,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:06,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:06,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:06,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:06,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:06,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:06,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:06,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:06,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:06,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2020-10-29 03:43:06,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327865932] [2020-10-29 03:43:06,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:06,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:43:06,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505927486] [2020-10-29 03:43:06,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:43:06,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:06,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:43:06,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:43:06,160 INFO L87 Difference]: Start difference. First operand 117 states and 126 transitions. Second operand 13 states. [2020-10-29 03:43:06,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:06,579 INFO L93 Difference]: Finished difference Result 227 states and 253 transitions. [2020-10-29 03:43:06,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:43:06,580 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 112 [2020-10-29 03:43:06,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:06,581 INFO L225 Difference]: With dead ends: 227 [2020-10-29 03:43:06,581 INFO L226 Difference]: Without dead ends: 126 [2020-10-29 03:43:06,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 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 03:43:06,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-29 03:43:06,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-10-29 03:43:06,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-29 03:43:06,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 135 transitions. [2020-10-29 03:43:06,591 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 135 transitions. Word has length 112 [2020-10-29 03:43:06,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:06,592 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 135 transitions. [2020-10-29 03:43:06,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:43:06,592 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 135 transitions. [2020-10-29 03:43:06,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 03:43:06,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:06,594 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:06,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:43:06,594 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:06,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:06,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1535201650, now seen corresponding path program 10 times [2020-10-29 03:43:06,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:06,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134977768] [2020-10-29 03:43:06,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:06,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:06,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:06,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:06,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:06,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:07,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:11,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:11,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 03:43:11,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:11,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:43:11,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:11,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:11,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:43:11,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:43:11,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:43:11,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:11,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:11,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:11,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:11,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:11,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:11,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:43:11,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:11,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:11,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:11,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:11,835 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2020-10-29 03:43:11,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134977768] [2020-10-29 03:43:11,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:11,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:43:11,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919373027] [2020-10-29 03:43:11,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:43:11,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:11,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:43:11,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:43:11,837 INFO L87 Difference]: Start difference. First operand 126 states and 135 transitions. Second operand 14 states. [2020-10-29 03:43:12,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:12,231 INFO L93 Difference]: Finished difference Result 244 states and 270 transitions. [2020-10-29 03:43:12,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:43:12,232 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 121 [2020-10-29 03:43:12,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:12,233 INFO L225 Difference]: With dead ends: 244 [2020-10-29 03:43:12,233 INFO L226 Difference]: Without dead ends: 135 [2020-10-29 03:43:12,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 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 03:43:12,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-29 03:43:12,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-10-29 03:43:12,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-29 03:43:12,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 144 transitions. [2020-10-29 03:43:12,255 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 144 transitions. Word has length 121 [2020-10-29 03:43:12,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:12,257 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 144 transitions. [2020-10-29 03:43:12,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:43:12,257 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 144 transitions. [2020-10-29 03:43:12,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 03:43:12,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:12,261 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:12,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:43:12,262 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:12,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:12,262 INFO L82 PathProgramCache]: Analyzing trace with hash -550885116, now seen corresponding path program 11 times [2020-10-29 03:43:12,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:12,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754581391] [2020-10-29 03:43:12,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:12,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:12,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:12,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:12,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:12,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:12,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:17,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:17,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 03:43:17,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:17,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:43:17,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:17,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:17,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:43:17,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 03:43:17,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 03:43:17,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:17,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:17,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:17,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:17,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:17,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:17,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:43:17,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:17,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:17,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:17,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:17,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:17,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:17,533 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2020-10-29 03:43:17,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754581391] [2020-10-29 03:43:17,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:17,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:43:17,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135356856] [2020-10-29 03:43:17,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:43:17,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:17,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:43:17,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:43:17,536 INFO L87 Difference]: Start difference. First operand 135 states and 144 transitions. Second operand 15 states. [2020-10-29 03:43:18,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:18,014 INFO L93 Difference]: Finished difference Result 261 states and 287 transitions. [2020-10-29 03:43:18,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:43:18,014 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 130 [2020-10-29 03:43:18,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:18,016 INFO L225 Difference]: With dead ends: 261 [2020-10-29 03:43:18,016 INFO L226 Difference]: Without dead ends: 144 [2020-10-29 03:43:18,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 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 03:43:18,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-29 03:43:18,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-29 03:43:18,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-29 03:43:18,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 153 transitions. [2020-10-29 03:43:18,034 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 153 transitions. Word has length 130 [2020-10-29 03:43:18,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:18,037 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 153 transitions. [2020-10-29 03:43:18,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:43:18,037 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 153 transitions. [2020-10-29 03:43:18,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 03:43:18,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:18,039 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:18,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:43:18,040 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:18,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:18,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1357954226, now seen corresponding path program 12 times [2020-10-29 03:43:18,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:18,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025644236] [2020-10-29 03:43:18,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:18,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:18,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:18,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:18,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:18,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:18,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:23,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:23,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 03:43:23,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:23,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:43:23,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:23,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:23,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:43:23,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 03:43:23,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:43:23,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:23,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:23,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:23,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:23,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:23,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:23,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:23,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:23,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:23,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:23,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:23,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:23,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:23,345 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2020-10-29 03:43:23,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025644236] [2020-10-29 03:43:23,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:23,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:43:23,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984191169] [2020-10-29 03:43:23,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:43:23,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:23,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:43:23,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:43:23,348 INFO L87 Difference]: Start difference. First operand 144 states and 153 transitions. Second operand 16 states. [2020-10-29 03:43:23,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:23,788 INFO L93 Difference]: Finished difference Result 278 states and 304 transitions. [2020-10-29 03:43:23,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:43:23,789 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 139 [2020-10-29 03:43:23,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:23,791 INFO L225 Difference]: With dead ends: 278 [2020-10-29 03:43:23,791 INFO L226 Difference]: Without dead ends: 153 [2020-10-29 03:43:23,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:43:23,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-29 03:43:23,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2020-10-29 03:43:23,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-29 03:43:23,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 162 transitions. [2020-10-29 03:43:23,802 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 162 transitions. Word has length 139 [2020-10-29 03:43:23,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:23,802 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 162 transitions. [2020-10-29 03:43:23,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:43:23,802 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 162 transitions. [2020-10-29 03:43:23,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 03:43:23,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:23,804 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:23,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:43:23,804 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:23,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:23,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1008875708, now seen corresponding path program 13 times [2020-10-29 03:43:23,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:23,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798198688] [2020-10-29 03:43:23,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:23,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:23,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:24,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:24,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:24,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:24,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:28,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:28,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 03:43:28,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:28,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:43:28,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:28,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:43:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 03:43:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 03:43:28,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:29,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:29,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:29,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:29,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:29,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:29,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:29,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:29,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:29,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:29,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:29,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2020-10-29 03:43:29,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798198688] [2020-10-29 03:43:29,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:29,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:43:29,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902410463] [2020-10-29 03:43:29,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:43:29,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:29,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:43:29,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:43:29,107 INFO L87 Difference]: Start difference. First operand 153 states and 162 transitions. Second operand 17 states. [2020-10-29 03:43:29,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:29,527 INFO L93 Difference]: Finished difference Result 295 states and 321 transitions. [2020-10-29 03:43:29,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:43:29,528 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 148 [2020-10-29 03:43:29,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:29,529 INFO L225 Difference]: With dead ends: 295 [2020-10-29 03:43:29,529 INFO L226 Difference]: Without dead ends: 162 [2020-10-29 03:43:29,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:43:29,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-29 03:43:29,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-10-29 03:43:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-29 03:43:29,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 171 transitions. [2020-10-29 03:43:29,542 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 171 transitions. Word has length 148 [2020-10-29 03:43:29,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:29,542 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 171 transitions. [2020-10-29 03:43:29,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:43:29,542 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 171 transitions. [2020-10-29 03:43:29,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-29 03:43:29,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:29,544 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:29,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:43:29,545 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:29,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:29,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1779197966, now seen corresponding path program 14 times [2020-10-29 03:43:29,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:29,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567628745] [2020-10-29 03:43:29,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:29,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:29,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:29,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:29,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:29,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:30,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:34,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:34,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 03:43:34,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:34,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:43:34,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:34,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:34,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:43:34,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 03:43:34,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:43:34,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:34,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:34,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:34,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:34,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:34,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:34,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:34,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:34,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:34,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:34,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:34,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:34,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-29 03:43:34,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567628745] [2020-10-29 03:43:34,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:34,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:43:34,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294595609] [2020-10-29 03:43:34,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:43:34,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:34,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:43:34,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:43:34,890 INFO L87 Difference]: Start difference. First operand 162 states and 171 transitions. Second operand 18 states. [2020-10-29 03:43:35,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:35,413 INFO L93 Difference]: Finished difference Result 312 states and 338 transitions. [2020-10-29 03:43:35,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:43:35,414 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 157 [2020-10-29 03:43:35,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:35,416 INFO L225 Difference]: With dead ends: 312 [2020-10-29 03:43:35,416 INFO L226 Difference]: Without dead ends: 171 [2020-10-29 03:43:35,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:43:35,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-29 03:43:35,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-29 03:43:35,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-29 03:43:35,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 180 transitions. [2020-10-29 03:43:35,427 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 180 transitions. Word has length 157 [2020-10-29 03:43:35,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:35,427 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 180 transitions. [2020-10-29 03:43:35,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:43:35,427 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 180 transitions. [2020-10-29 03:43:35,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-29 03:43:35,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:35,429 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:35,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:43:35,430 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:35,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:35,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1398123132, now seen corresponding path program 15 times [2020-10-29 03:43:35,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:35,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154424699] [2020-10-29 03:43:35,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:35,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:35,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:35,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:35,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:35,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:36,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:40,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:40,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 03:43:40,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:40,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:43:40,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:40,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:40,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:43:40,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-29 03:43:40,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 03:43:40,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:40,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:40,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:40,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:40,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:40,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:40,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:40,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:40,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:40,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:40,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:40,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:40,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:40,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2020-10-29 03:43:40,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154424699] [2020-10-29 03:43:40,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:40,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:43:40,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732084071] [2020-10-29 03:43:40,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:43:40,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:40,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:43:40,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:43:40,799 INFO L87 Difference]: Start difference. First operand 171 states and 180 transitions. Second operand 19 states. [2020-10-29 03:43:41,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:41,381 INFO L93 Difference]: Finished difference Result 329 states and 355 transitions. [2020-10-29 03:43:41,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:43:41,382 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 166 [2020-10-29 03:43:41,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:41,384 INFO L225 Difference]: With dead ends: 329 [2020-10-29 03:43:41,384 INFO L226 Difference]: Without dead ends: 180 [2020-10-29 03:43:41,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:43:41,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-29 03:43:41,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-10-29 03:43:41,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-29 03:43:41,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 189 transitions. [2020-10-29 03:43:41,399 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 189 transitions. Word has length 166 [2020-10-29 03:43:41,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:41,400 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 189 transitions. [2020-10-29 03:43:41,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:43:41,400 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 189 transitions. [2020-10-29 03:43:41,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-29 03:43:41,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:41,403 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:41,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:43:41,403 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:41,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:41,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1666573106, now seen corresponding path program 16 times [2020-10-29 03:43:41,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:41,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111992970] [2020-10-29 03:43:41,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:41,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:41,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:41,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:41,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:41,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:42,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:46,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:46,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-29 03:43:46,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:46,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 03:43:46,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:46,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:46,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:43:46,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:43:46,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:43:46,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:46,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:46,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:46,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:46,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:46,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:46,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:43:46,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:46,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:46,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:46,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2020-10-29 03:43:46,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111992970] [2020-10-29 03:43:46,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:46,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:43:46,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339420755] [2020-10-29 03:43:46,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:43:46,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:46,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:43:46,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:43:46,850 INFO L87 Difference]: Start difference. First operand 180 states and 189 transitions. Second operand 20 states. [2020-10-29 03:43:47,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:47,444 INFO L93 Difference]: Finished difference Result 346 states and 372 transitions. [2020-10-29 03:43:47,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:43:47,445 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 175 [2020-10-29 03:43:47,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:47,447 INFO L225 Difference]: With dead ends: 346 [2020-10-29 03:43:47,447 INFO L226 Difference]: Without dead ends: 189 [2020-10-29 03:43:47,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:43:47,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-29 03:43:47,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2020-10-29 03:43:47,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-29 03:43:47,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 198 transitions. [2020-10-29 03:43:47,459 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 198 transitions. Word has length 175 [2020-10-29 03:43:47,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:47,459 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 198 transitions. [2020-10-29 03:43:47,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:43:47,460 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 198 transitions. [2020-10-29 03:43:47,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-29 03:43:47,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:47,462 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:47,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:43:47,462 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:47,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:47,463 INFO L82 PathProgramCache]: Analyzing trace with hash -748956732, now seen corresponding path program 17 times [2020-10-29 03:43:47,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:47,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59660125] [2020-10-29 03:43:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:47,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:47,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:47,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:47,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:47,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:48,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:52,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:52,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 03:43:52,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:52,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 03:43:52,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:52,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:52,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:43:52,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:43:52,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:43:52,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:52,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:52,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:52,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:52,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:52,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:52,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:43:52,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:52,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:52,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:52,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1377 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2020-10-29 03:43:52,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59660125] [2020-10-29 03:43:52,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:52,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:43:52,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623830546] [2020-10-29 03:43:52,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:43:52,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:52,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:43:52,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:43:52,868 INFO L87 Difference]: Start difference. First operand 189 states and 198 transitions. Second operand 21 states. [2020-10-29 03:43:53,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:53,440 INFO L93 Difference]: Finished difference Result 363 states and 389 transitions. [2020-10-29 03:43:53,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:43:53,441 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 184 [2020-10-29 03:43:53,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:53,443 INFO L225 Difference]: With dead ends: 363 [2020-10-29 03:43:53,443 INFO L226 Difference]: Without dead ends: 198 [2020-10-29 03:43:53,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:43:53,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-29 03:43:53,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-10-29 03:43:53,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-29 03:43:53,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 207 transitions. [2020-10-29 03:43:53,456 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 207 transitions. Word has length 184 [2020-10-29 03:43:53,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:53,456 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 207 transitions. [2020-10-29 03:43:53,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:43:53,456 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 207 transitions. [2020-10-29 03:43:53,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-29 03:43:53,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:53,459 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:53,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:43:53,459 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:53,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:53,460 INFO L82 PathProgramCache]: Analyzing trace with hash 589062542, now seen corresponding path program 18 times [2020-10-29 03:43:53,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:53,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426861930] [2020-10-29 03:43:53,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:53,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:53,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:53,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:53,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:53,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:54,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:58,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:58,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-29 03:43:58,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:58,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:43:58,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:58,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:58,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:43:58,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 03:43:58,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:43:58,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:58,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:58,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:58,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:58,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:58,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:58,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:58,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:58,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:58,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:58,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2020-10-29 03:43:58,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426861930] [2020-10-29 03:43:58,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:58,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:43:58,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716305112] [2020-10-29 03:43:58,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:43:58,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:58,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:43:58,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:43:58,911 INFO L87 Difference]: Start difference. First operand 198 states and 207 transitions. Second operand 22 states. [2020-10-29 03:43:59,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:59,542 INFO L93 Difference]: Finished difference Result 380 states and 406 transitions. [2020-10-29 03:43:59,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:43:59,544 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 193 [2020-10-29 03:43:59,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:59,545 INFO L225 Difference]: With dead ends: 380 [2020-10-29 03:43:59,545 INFO L226 Difference]: Without dead ends: 207 [2020-10-29 03:43:59,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:43:59,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-29 03:43:59,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2020-10-29 03:43:59,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-29 03:43:59,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 216 transitions. [2020-10-29 03:43:59,557 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 216 transitions. Word has length 193 [2020-10-29 03:43:59,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:59,558 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 216 transitions. [2020-10-29 03:43:59,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:43:59,558 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 216 transitions. [2020-10-29 03:43:59,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-29 03:43:59,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:59,559 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:59,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:43:59,560 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:59,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:59,560 INFO L82 PathProgramCache]: Analyzing trace with hash -591511036, now seen corresponding path program 19 times [2020-10-29 03:43:59,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:59,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397233673] [2020-10-29 03:43:59,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:59,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:59,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:59,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:59,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:00,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:00,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:04,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:04,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-29 03:44:04,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:44:04,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 03:44:04,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:04,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:04,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:44:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-29 03:44:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 03:44:04,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:05,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:05,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:05,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:05,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:05,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:05,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:05,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:05,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:05,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:05,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:05,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:05,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:05,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1710 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2020-10-29 03:44:05,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397233673] [2020-10-29 03:44:05,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:05,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:44:05,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258533181] [2020-10-29 03:44:05,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:44:05,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:05,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:44:05,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:44:05,073 INFO L87 Difference]: Start difference. First operand 207 states and 216 transitions. Second operand 23 states. [2020-10-29 03:44:05,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:05,694 INFO L93 Difference]: Finished difference Result 397 states and 423 transitions. [2020-10-29 03:44:05,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:44:05,695 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 202 [2020-10-29 03:44:05,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:05,696 INFO L225 Difference]: With dead ends: 397 [2020-10-29 03:44:05,697 INFO L226 Difference]: Without dead ends: 216 [2020-10-29 03:44:05,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:44:05,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-29 03:44:05,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-10-29 03:44:05,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-29 03:44:05,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 225 transitions. [2020-10-29 03:44:05,709 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 225 transitions. Word has length 202 [2020-10-29 03:44:05,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:05,710 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 225 transitions. [2020-10-29 03:44:05,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:44:05,711 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 225 transitions. [2020-10-29 03:44:05,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-29 03:44:05,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:05,712 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:05,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:44:05,713 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:05,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:05,713 INFO L82 PathProgramCache]: Analyzing trace with hash 781661774, now seen corresponding path program 20 times [2020-10-29 03:44:05,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:05,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605381016] [2020-10-29 03:44:05,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:05,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:06,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:06,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:06,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:06,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:07,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:10,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:10,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-29 03:44:10,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:44:10,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 03:44:10,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:10,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:10,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:44:10,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 03:44:10,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:44:10,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:11,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:11,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:11,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:11,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:11,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:11,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:11,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:11,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:11,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:11,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:11,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:11,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:11,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 1680 trivial. 0 not checked. [2020-10-29 03:44:11,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605381016] [2020-10-29 03:44:11,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:11,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:44:11,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198355639] [2020-10-29 03:44:11,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:44:11,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:11,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:44:11,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:44:11,274 INFO L87 Difference]: Start difference. First operand 216 states and 225 transitions. Second operand 24 states. [2020-10-29 03:44:11,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:11,937 INFO L93 Difference]: Finished difference Result 414 states and 440 transitions. [2020-10-29 03:44:11,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:44:11,937 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 211 [2020-10-29 03:44:11,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:11,939 INFO L225 Difference]: With dead ends: 414 [2020-10-29 03:44:11,939 INFO L226 Difference]: Without dead ends: 225 [2020-10-29 03:44:11,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:44:11,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-29 03:44:11,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2020-10-29 03:44:11,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-29 03:44:11,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 234 transitions. [2020-10-29 03:44:11,954 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 234 transitions. Word has length 211 [2020-10-29 03:44:11,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:11,956 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 234 transitions. [2020-10-29 03:44:11,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:44:11,956 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 234 transitions. [2020-10-29 03:44:11,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-29 03:44:11,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:11,958 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:11,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:44:11,958 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:11,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:11,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1734500284, now seen corresponding path program 21 times [2020-10-29 03:44:11,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:11,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374320257] [2020-10-29 03:44:11,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:12,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:12,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:12,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:12,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:12,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:13,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:17,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:17,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-29 03:44:17,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:44:17,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 03:44:17,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:17,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:44:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 03:44:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 03:44:17,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:17,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:17,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:17,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:17,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:17,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:17,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:44:17,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:17,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:17,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:17,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:17,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:17,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2079 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 1848 trivial. 0 not checked. [2020-10-29 03:44:17,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374320257] [2020-10-29 03:44:17,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:17,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:44:17,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065610154] [2020-10-29 03:44:17,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:44:17,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:17,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:44:17,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:44:17,550 INFO L87 Difference]: Start difference. First operand 225 states and 234 transitions. Second operand 25 states. [2020-10-29 03:44:18,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:18,165 INFO L93 Difference]: Finished difference Result 431 states and 457 transitions. [2020-10-29 03:44:18,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:44:18,165 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 220 [2020-10-29 03:44:18,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:18,167 INFO L225 Difference]: With dead ends: 431 [2020-10-29 03:44:18,167 INFO L226 Difference]: Without dead ends: 234 [2020-10-29 03:44:18,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:44:18,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-29 03:44:18,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-10-29 03:44:18,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-29 03:44:18,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 243 transitions. [2020-10-29 03:44:18,179 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 243 transitions. Word has length 220 [2020-10-29 03:44:18,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:18,179 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 243 transitions. [2020-10-29 03:44:18,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:44:18,179 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 243 transitions. [2020-10-29 03:44:18,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-29 03:44:18,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:18,181 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:18,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:44:18,181 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:18,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:18,182 INFO L82 PathProgramCache]: Analyzing trace with hash -2058446066, now seen corresponding path program 22 times [2020-10-29 03:44:18,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:18,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546965510] [2020-10-29 03:44:18,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:18,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:18,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:18,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:18,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:18,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:19,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:23,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:23,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-29 03:44:23,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:44:23,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:44:23,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:23,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:44:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 03:44:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:44:23,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:23,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:23,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:23,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:23,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:23,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:23,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:23,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:23,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:23,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:23,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:23,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:23,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:23,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2277 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2020-10-29 03:44:23,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546965510] [2020-10-29 03:44:23,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:23,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:44:23,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214606073] [2020-10-29 03:44:23,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:44:23,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:23,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:44:23,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:44:23,944 INFO L87 Difference]: Start difference. First operand 234 states and 243 transitions. Second operand 26 states. [2020-10-29 03:44:24,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:24,570 INFO L93 Difference]: Finished difference Result 448 states and 474 transitions. [2020-10-29 03:44:24,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:44:24,571 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 229 [2020-10-29 03:44:24,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:24,573 INFO L225 Difference]: With dead ends: 448 [2020-10-29 03:44:24,573 INFO L226 Difference]: Without dead ends: 243 [2020-10-29 03:44:24,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:44:24,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-29 03:44:24,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2020-10-29 03:44:24,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-29 03:44:24,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 252 transitions. [2020-10-29 03:44:24,586 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 252 transitions. Word has length 229 [2020-10-29 03:44:24,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:24,586 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 252 transitions. [2020-10-29 03:44:24,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:44:24,586 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 252 transitions. [2020-10-29 03:44:24,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-29 03:44:24,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:24,588 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:24,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:44:24,588 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:24,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:24,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1043992956, now seen corresponding path program 23 times [2020-10-29 03:44:24,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:24,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571188942] [2020-10-29 03:44:24,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:24,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:24,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:24,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:25,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:25,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:26,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:29,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:29,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 03:44:29,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:44:29,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:44:29,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:29,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:44:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-29 03:44:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 03:44:29,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:30,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:30,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:30,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:30,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:30,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:30,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:30,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:30,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:30,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:30,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:30,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:30,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:44:30,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2484 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 2208 trivial. 0 not checked. [2020-10-29 03:44:30,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571188942] [2020-10-29 03:44:30,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:30,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:44:30,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072669596] [2020-10-29 03:44:30,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:44:30,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:30,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:44:30,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:44:30,367 INFO L87 Difference]: Start difference. First operand 243 states and 252 transitions. Second operand 27 states. [2020-10-29 03:44:31,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:31,051 INFO L93 Difference]: Finished difference Result 465 states and 491 transitions. [2020-10-29 03:44:31,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:44:31,052 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 238 [2020-10-29 03:44:31,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:31,054 INFO L225 Difference]: With dead ends: 465 [2020-10-29 03:44:31,054 INFO L226 Difference]: Without dead ends: 252 [2020-10-29 03:44:31,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:44:31,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-29 03:44:31,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-10-29 03:44:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-29 03:44:31,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 261 transitions. [2020-10-29 03:44:31,068 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 261 transitions. Word has length 238 [2020-10-29 03:44:31,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:31,068 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 261 transitions. [2020-10-29 03:44:31,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:44:31,068 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 261 transitions. [2020-10-29 03:44:31,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-29 03:44:31,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:31,070 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:31,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:44:31,072 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:31,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:31,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1032417330, now seen corresponding path program 24 times [2020-10-29 03:44:31,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:31,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459471704] [2020-10-29 03:44:31,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:31,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:31,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:31,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:31,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:31,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:33,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:36,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:36,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-29 03:44:36,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:44:36,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:44:36,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:36,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:36,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:44:36,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-10-29 03:44:36,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:44:36,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:36,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:36,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:36,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:36,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:36,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:36,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:36,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:36,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:36,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:36,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:36,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:36,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:36,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 2400 trivial. 0 not checked. [2020-10-29 03:44:36,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459471704] [2020-10-29 03:44:36,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:36,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:44:36,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37112531] [2020-10-29 03:44:36,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:44:36,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:36,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:44:36,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:44:36,759 INFO L87 Difference]: Start difference. First operand 252 states and 261 transitions. Second operand 28 states. [2020-10-29 03:44:37,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:37,536 INFO L93 Difference]: Finished difference Result 482 states and 508 transitions. [2020-10-29 03:44:37,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:44:37,537 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 247 [2020-10-29 03:44:37,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:37,539 INFO L225 Difference]: With dead ends: 482 [2020-10-29 03:44:37,539 INFO L226 Difference]: Without dead ends: 261 [2020-10-29 03:44:37,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:44:37,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-29 03:44:37,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2020-10-29 03:44:37,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-29 03:44:37,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 270 transitions. [2020-10-29 03:44:37,554 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 270 transitions. Word has length 247 [2020-10-29 03:44:37,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:37,554 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 270 transitions. [2020-10-29 03:44:37,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:44:37,554 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 270 transitions. [2020-10-29 03:44:37,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-29 03:44:37,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:37,556 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:37,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:44:37,556 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:37,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:37,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1107088188, now seen corresponding path program 25 times [2020-10-29 03:44:37,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:37,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509251165] [2020-10-29 03:44:37,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:37,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:38,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:38,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:38,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:38,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:40,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:42,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:42,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-29 03:44:42,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:44:42,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:44:42,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:42,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:44:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 03:44:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:44:42,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:43,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:43,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:43,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:43,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:43,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:43,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:43,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:43,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:43,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:43,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2925 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 2600 trivial. 0 not checked. [2020-10-29 03:44:43,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509251165] [2020-10-29 03:44:43,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:43,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:44:43,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680607005] [2020-10-29 03:44:43,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:44:43,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:43,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:44:43,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:44:43,302 INFO L87 Difference]: Start difference. First operand 261 states and 270 transitions. Second operand 29 states. [2020-10-29 03:44:44,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:44,029 INFO L93 Difference]: Finished difference Result 499 states and 525 transitions. [2020-10-29 03:44:44,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:44:44,030 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 256 [2020-10-29 03:44:44,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:44,032 INFO L225 Difference]: With dead ends: 499 [2020-10-29 03:44:44,032 INFO L226 Difference]: Without dead ends: 270 [2020-10-29 03:44:44,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:44:44,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-29 03:44:44,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2020-10-29 03:44:44,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-29 03:44:44,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 279 transitions. [2020-10-29 03:44:44,047 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 279 transitions. Word has length 256 [2020-10-29 03:44:44,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:44,047 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 279 transitions. [2020-10-29 03:44:44,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:44:44,047 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 279 transitions. [2020-10-29 03:44:44,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-29 03:44:44,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:44,049 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:44,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:44:44,050 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:44,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:44,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1773988722, now seen corresponding path program 26 times [2020-10-29 03:44:44,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:44,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30647178] [2020-10-29 03:44:44,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:44,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:44,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:44,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:44,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:44,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:46,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:49,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:49,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 03:44:49,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:44:49,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:44:49,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:49,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:44:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-29 03:44:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:44:49,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:49,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:49,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:49,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:49,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:49,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:49,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:44:49,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:49,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:49,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:49,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3159 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 2808 trivial. 0 not checked. [2020-10-29 03:44:49,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30647178] [2020-10-29 03:44:49,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:49,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:44:49,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430028508] [2020-10-29 03:44:49,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:44:49,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:49,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:44:49,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:44:49,913 INFO L87 Difference]: Start difference. First operand 270 states and 279 transitions. Second operand 30 states. [2020-10-29 03:44:50,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:50,772 INFO L93 Difference]: Finished difference Result 516 states and 542 transitions. [2020-10-29 03:44:50,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:44:50,773 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 265 [2020-10-29 03:44:50,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:50,775 INFO L225 Difference]: With dead ends: 516 [2020-10-29 03:44:50,775 INFO L226 Difference]: Without dead ends: 279 [2020-10-29 03:44:50,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:44:50,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-29 03:44:50,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2020-10-29 03:44:50,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-29 03:44:50,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 288 transitions. [2020-10-29 03:44:50,787 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 288 transitions. Word has length 265 [2020-10-29 03:44:50,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:50,787 INFO L481 AbstractCegarLoop]: Abstraction has 279 states and 288 transitions. [2020-10-29 03:44:50,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:44:50,787 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 288 transitions. [2020-10-29 03:44:50,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-29 03:44:50,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:50,789 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:50,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:44:50,789 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:50,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:50,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1579244292, now seen corresponding path program 27 times [2020-10-29 03:44:50,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:50,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357484108] [2020-10-29 03:44:50,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:50,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:51,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:51,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:51,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:51,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:53,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:55,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:55,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-29 03:44:55,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:44:55,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-29 03:44:55,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:55,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:55,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:44:55,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 03:44:55,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:44:55,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:56,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:56,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:56,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:56,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:56,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:56,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:56,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:56,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:56,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3402 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 3024 trivial. 0 not checked. [2020-10-29 03:44:56,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357484108] [2020-10-29 03:44:56,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:56,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:44:56,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096508981] [2020-10-29 03:44:56,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:44:56,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:56,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:44:56,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:44:56,682 INFO L87 Difference]: Start difference. First operand 279 states and 288 transitions. Second operand 31 states. [2020-10-29 03:44:57,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:57,601 INFO L93 Difference]: Finished difference Result 533 states and 559 transitions. [2020-10-29 03:44:57,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:44:57,602 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 274 [2020-10-29 03:44:57,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:57,604 INFO L225 Difference]: With dead ends: 533 [2020-10-29 03:44:57,604 INFO L226 Difference]: Without dead ends: 288 [2020-10-29 03:44:57,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:44:57,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-29 03:44:57,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2020-10-29 03:44:57,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-10-29 03:44:57,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 297 transitions. [2020-10-29 03:44:57,616 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 297 transitions. Word has length 274 [2020-10-29 03:44:57,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:57,616 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 297 transitions. [2020-10-29 03:44:57,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:44:57,616 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 297 transitions. [2020-10-29 03:44:57,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-29 03:44:57,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:57,618 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:57,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:44:57,618 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:57,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:57,619 INFO L82 PathProgramCache]: Analyzing trace with hash 99101006, now seen corresponding path program 28 times [2020-10-29 03:44:57,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:57,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253756225] [2020-10-29 03:44:57,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:57,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:57,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:58,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:58,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:58,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:00,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:02,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:02,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-29 03:45:02,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:45:02,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-29 03:45:02,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:02,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:02,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:45:02,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 03:45:02,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:45:02,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:03,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:03,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:03,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:03,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:03,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:03,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:03,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:03,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:03,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:03,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3654 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 3248 trivial. 0 not checked. [2020-10-29 03:45:03,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253756225] [2020-10-29 03:45:03,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:03,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:45:03,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403695370] [2020-10-29 03:45:03,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:45:03,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:03,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:45:03,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:45:03,521 INFO L87 Difference]: Start difference. First operand 288 states and 297 transitions. Second operand 32 states. [2020-10-29 03:45:04,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:04,491 INFO L93 Difference]: Finished difference Result 550 states and 576 transitions. [2020-10-29 03:45:04,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:45:04,492 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 283 [2020-10-29 03:45:04,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:04,494 INFO L225 Difference]: With dead ends: 550 [2020-10-29 03:45:04,495 INFO L226 Difference]: Without dead ends: 297 [2020-10-29 03:45:04,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:45:04,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-29 03:45:04,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2020-10-29 03:45:04,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-10-29 03:45:04,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 306 transitions. [2020-10-29 03:45:04,507 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 306 transitions. Word has length 283 [2020-10-29 03:45:04,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:04,507 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 306 transitions. [2020-10-29 03:45:04,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:45:04,507 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 306 transitions. [2020-10-29 03:45:04,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-29 03:45:04,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:04,509 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:04,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:45:04,510 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:04,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:04,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1645446844, now seen corresponding path program 29 times [2020-10-29 03:45:04,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:04,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587177282] [2020-10-29 03:45:04,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:04,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:04,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:05,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:05,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:05,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:07,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:09,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:09,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-29 03:45:09,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:45:09,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-29 03:45:09,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:09,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:09,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:45:09,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 03:45:09,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 03:45:09,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:10,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:10,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:10,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:10,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:10,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:10,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:10,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:10,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:10,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:10,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:10,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:10,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:10,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3915 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 3480 trivial. 0 not checked. [2020-10-29 03:45:10,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587177282] [2020-10-29 03:45:10,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:10,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:45:10,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976072355] [2020-10-29 03:45:10,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:45:10,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:10,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:45:10,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:45:10,441 INFO L87 Difference]: Start difference. First operand 297 states and 306 transitions. Second operand 33 states. [2020-10-29 03:45:11,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:11,335 INFO L93 Difference]: Finished difference Result 567 states and 593 transitions. [2020-10-29 03:45:11,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:45:11,335 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 292 [2020-10-29 03:45:11,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:11,337 INFO L225 Difference]: With dead ends: 567 [2020-10-29 03:45:11,338 INFO L226 Difference]: Without dead ends: 306 [2020-10-29 03:45:11,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:45:11,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-29 03:45:11,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2020-10-29 03:45:11,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-29 03:45:11,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 315 transitions. [2020-10-29 03:45:11,350 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 315 transitions. Word has length 292 [2020-10-29 03:45:11,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:11,351 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 315 transitions. [2020-10-29 03:45:11,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:45:11,351 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 315 transitions. [2020-10-29 03:45:11,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-29 03:45:11,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:11,353 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:11,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:45:11,353 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:11,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:11,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1415983602, now seen corresponding path program 30 times [2020-10-29 03:45:11,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:11,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35925773] [2020-10-29 03:45:11,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:11,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:11,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:11,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:12,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:12,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:14,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:16,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:16,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-29 03:45:16,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:45:16,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 03:45:16,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:16,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:16,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:45:16,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 03:45:16,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:45:16,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:17,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:17,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:17,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:17,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:17,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:17,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:17,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:17,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:17,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:17,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:17,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:17,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4185 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3720 trivial. 0 not checked. [2020-10-29 03:45:17,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35925773] [2020-10-29 03:45:17,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:17,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:45:17,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470256143] [2020-10-29 03:45:17,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:45:17,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:17,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:45:17,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:45:17,337 INFO L87 Difference]: Start difference. First operand 306 states and 315 transitions. Second operand 34 states. [2020-10-29 03:45:18,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:18,299 INFO L93 Difference]: Finished difference Result 584 states and 610 transitions. [2020-10-29 03:45:18,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:45:18,301 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 301 [2020-10-29 03:45:18,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:18,304 INFO L225 Difference]: With dead ends: 584 [2020-10-29 03:45:18,304 INFO L226 Difference]: Without dead ends: 315 [2020-10-29 03:45:18,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:45:18,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-29 03:45:18,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2020-10-29 03:45:18,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-29 03:45:18,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 324 transitions. [2020-10-29 03:45:18,319 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 324 transitions. Word has length 301 [2020-10-29 03:45:18,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:18,319 INFO L481 AbstractCegarLoop]: Abstraction has 315 states and 324 transitions. [2020-10-29 03:45:18,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:45:18,320 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 324 transitions. [2020-10-29 03:45:18,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-29 03:45:18,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:18,322 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:18,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:45:18,323 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:18,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:18,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1680902020, now seen corresponding path program 31 times [2020-10-29 03:45:18,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:18,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614120283] [2020-10-29 03:45:18,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:18,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:18,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:19,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:19,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:19,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:21,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:23,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:23,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-29 03:45:23,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:45:23,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-29 03:45:23,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:23,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:23,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:45:23,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-29 03:45:23,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 03:45:23,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:24,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:24,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:24,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:24,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:24,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:24,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:24,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:24,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:24,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4464 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 3968 trivial. 0 not checked. [2020-10-29 03:45:24,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614120283] [2020-10-29 03:45:24,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:24,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:45:24,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557515114] [2020-10-29 03:45:24,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:45:24,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:24,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:45:24,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:45:24,489 INFO L87 Difference]: Start difference. First operand 315 states and 324 transitions. Second operand 35 states. [2020-10-29 03:45:25,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:25,416 INFO L93 Difference]: Finished difference Result 601 states and 627 transitions. [2020-10-29 03:45:25,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:45:25,417 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 310 [2020-10-29 03:45:25,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:25,420 INFO L225 Difference]: With dead ends: 601 [2020-10-29 03:45:25,420 INFO L226 Difference]: Without dead ends: 324 [2020-10-29 03:45:25,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:45:25,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-29 03:45:25,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2020-10-29 03:45:25,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-10-29 03:45:25,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 333 transitions. [2020-10-29 03:45:25,431 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 333 transitions. Word has length 310 [2020-10-29 03:45:25,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:25,432 INFO L481 AbstractCegarLoop]: Abstraction has 324 states and 333 transitions. [2020-10-29 03:45:25,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 03:45:25,432 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 333 transitions. [2020-10-29 03:45:25,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-29 03:45:25,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:25,434 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:25,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:45:25,434 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:25,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:25,435 INFO L82 PathProgramCache]: Analyzing trace with hash -158596402, now seen corresponding path program 32 times [2020-10-29 03:45:25,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:25,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850731856] [2020-10-29 03:45:25,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:25,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:25,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:26,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:26,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:26,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:29,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:30,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:30,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-29 03:45:30,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:45:30,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-29 03:45:30,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:30,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:30,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:45:30,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 03:45:30,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:45:30,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:31,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:31,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:31,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:31,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:31,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:31,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:31,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:31,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:31,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:31,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:31,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:31,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:31,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4752 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 4224 trivial. 0 not checked. [2020-10-29 03:45:31,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850731856] [2020-10-29 03:45:31,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:31,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:45:31,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651110277] [2020-10-29 03:45:31,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:45:31,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:31,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:45:31,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:45:31,545 INFO L87 Difference]: Start difference. First operand 324 states and 333 transitions. Second operand 36 states. [2020-10-29 03:45:32,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:32,666 INFO L93 Difference]: Finished difference Result 618 states and 644 transitions. [2020-10-29 03:45:32,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:45:32,667 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 319 [2020-10-29 03:45:32,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:32,669 INFO L225 Difference]: With dead ends: 618 [2020-10-29 03:45:32,669 INFO L226 Difference]: Without dead ends: 333 [2020-10-29 03:45:32,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:45:32,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-29 03:45:32,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2020-10-29 03:45:32,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-10-29 03:45:32,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 342 transitions. [2020-10-29 03:45:32,681 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 342 transitions. Word has length 319 [2020-10-29 03:45:32,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:32,681 INFO L481 AbstractCegarLoop]: Abstraction has 333 states and 342 transitions. [2020-10-29 03:45:32,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:45:32,681 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 342 transitions. [2020-10-29 03:45:32,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-29 03:45:32,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:32,683 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:32,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:45:32,684 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:32,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:32,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1119454660, now seen corresponding path program 33 times [2020-10-29 03:45:32,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:32,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396728017] [2020-10-29 03:45:32,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:32,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:33,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:33,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:33,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:33,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:36,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:37,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:37,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-29 03:45:37,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:45:37,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 03:45:37,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:37,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:37,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 03:45:37,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-29 03:45:37,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 03:45:37,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:38,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:38,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:38,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:38,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:38,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:38,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:45:38,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:38,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:38,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:38,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:38,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:38,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:38,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5049 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 4488 trivial. 0 not checked. [2020-10-29 03:45:38,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396728017] [2020-10-29 03:45:38,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:38,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 03:45:38,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788445202] [2020-10-29 03:45:38,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 03:45:38,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:38,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 03:45:38,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:45:38,922 INFO L87 Difference]: Start difference. First operand 333 states and 342 transitions. Second operand 37 states. [2020-10-29 03:45:39,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:39,962 INFO L93 Difference]: Finished difference Result 635 states and 661 transitions. [2020-10-29 03:45:39,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 03:45:39,962 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 328 [2020-10-29 03:45:39,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:39,965 INFO L225 Difference]: With dead ends: 635 [2020-10-29 03:45:39,965 INFO L226 Difference]: Without dead ends: 342 [2020-10-29 03:45:39,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:45:39,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-29 03:45:39,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2020-10-29 03:45:39,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-29 03:45:39,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 351 transitions. [2020-10-29 03:45:39,982 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 351 transitions. Word has length 328 [2020-10-29 03:45:39,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:39,982 INFO L481 AbstractCegarLoop]: Abstraction has 342 states and 351 transitions. [2020-10-29 03:45:39,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 03:45:39,982 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 351 transitions. [2020-10-29 03:45:39,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-29 03:45:39,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:39,985 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:39,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:45:39,985 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:39,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:39,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1794295694, now seen corresponding path program 34 times [2020-10-29 03:45:39,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:39,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575621575] [2020-10-29 03:45:39,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:40,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:40,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:40,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:40,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:41,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:44,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:45,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:45,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-29 03:45:45,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:45:45,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 03:45:45,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:45,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:45,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 03:45:45,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 03:45:45,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:45:45,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:46,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:46,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:46,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:46,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:46,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:46,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:46,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:46,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:46,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:46,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5355 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 4760 trivial. 0 not checked. [2020-10-29 03:45:46,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575621575] [2020-10-29 03:45:46,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:46,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 03:45:46,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710832579] [2020-10-29 03:45:46,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 03:45:46,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:46,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 03:45:46,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:45:46,209 INFO L87 Difference]: Start difference. First operand 342 states and 351 transitions. Second operand 38 states. [2020-10-29 03:45:47,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:47,409 INFO L93 Difference]: Finished difference Result 652 states and 678 transitions. [2020-10-29 03:45:47,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:45:47,409 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 337 [2020-10-29 03:45:47,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:47,411 INFO L225 Difference]: With dead ends: 652 [2020-10-29 03:45:47,411 INFO L226 Difference]: Without dead ends: 351 [2020-10-29 03:45:47,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:45:47,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-29 03:45:47,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2020-10-29 03:45:47,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-10-29 03:45:47,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 360 transitions. [2020-10-29 03:45:47,424 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 360 transitions. Word has length 337 [2020-10-29 03:45:47,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:47,424 INFO L481 AbstractCegarLoop]: Abstraction has 351 states and 360 transitions. [2020-10-29 03:45:47,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 03:45:47,424 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 360 transitions. [2020-10-29 03:45:47,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-29 03:45:47,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:47,426 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:47,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:45:47,427 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:47,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:47,427 INFO L82 PathProgramCache]: Analyzing trace with hash 911438852, now seen corresponding path program 35 times [2020-10-29 03:45:47,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:47,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024638915] [2020-10-29 03:45:47,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:47,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:47,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:48,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:48,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:48,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:52,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:52,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:52,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-29 03:45:52,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:45:52,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 03:45:52,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:52,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:52,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-29 03:45:52,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:45:52,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 03:45:52,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:53,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:53,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:53,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:53,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:53,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:53,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:53,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:53,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:53,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:53,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 5670 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 5040 trivial. 0 not checked. [2020-10-29 03:45:53,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024638915] [2020-10-29 03:45:53,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:53,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-29 03:45:53,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195398104] [2020-10-29 03:45:53,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-29 03:45:53,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:53,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-29 03:45:53,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:45:53,706 INFO L87 Difference]: Start difference. First operand 351 states and 360 transitions. Second operand 39 states. [2020-10-29 03:45:54,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:54,964 INFO L93 Difference]: Finished difference Result 669 states and 695 transitions. [2020-10-29 03:45:54,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 03:45:54,965 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 346 [2020-10-29 03:45:54,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:54,968 INFO L225 Difference]: With dead ends: 669 [2020-10-29 03:45:54,968 INFO L226 Difference]: Without dead ends: 360 [2020-10-29 03:45:54,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:45:54,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-10-29 03:45:54,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2020-10-29 03:45:54,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-10-29 03:45:54,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 369 transitions. [2020-10-29 03:45:54,980 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 369 transitions. Word has length 346 [2020-10-29 03:45:54,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:54,981 INFO L481 AbstractCegarLoop]: Abstraction has 360 states and 369 transitions. [2020-10-29 03:45:54,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-29 03:45:54,981 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 369 transitions. [2020-10-29 03:45:54,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-29 03:45:54,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:54,983 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:54,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 03:45:54,984 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:54,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:54,984 INFO L82 PathProgramCache]: Analyzing trace with hash -503178162, now seen corresponding path program 36 times [2020-10-29 03:45:54,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:54,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550395460] [2020-10-29 03:45:54,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:55,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:55,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:55,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:56,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:56,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:00,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:00,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-29 03:46:00,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:46:00,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 03:46:00,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:00,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:00,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-29 03:46:00,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-29 03:46:00,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:46:00,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:01,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:01,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:01,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:01,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:01,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:01,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:46:01,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:01,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:01,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:01,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:01,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:01,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5994 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 5328 trivial. 0 not checked. [2020-10-29 03:46:01,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550395460] [2020-10-29 03:46:01,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:01,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-29 03:46:01,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445805941] [2020-10-29 03:46:01,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-29 03:46:01,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:01,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-29 03:46:01,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:46:01,334 INFO L87 Difference]: Start difference. First operand 360 states and 369 transitions. Second operand 40 states.