/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=DEEPEST --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/sorting_selectionsort_2_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:14:56,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:14:56,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:14:56,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:14:56,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:14:56,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:14:56,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:14:56,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:14:56,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:14:56,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:14:56,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:14:56,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:14:56,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:14:56,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:14:56,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:14:56,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:14:56,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:14:56,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:14:56,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:14:56,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:14:56,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:14:56,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:14:56,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:14:56,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:14:56,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:14:56,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:14:56,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:14:56,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:14:56,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:14:56,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:14:56,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:14:56,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:14:56,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:14:56,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:14:56,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:14:56,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:14:56,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:14:56,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:14:56,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:14:56,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:14:56,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:14:56,656 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 [2020-10-27 14:14:56,686 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:14:56,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:14:56,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:14:56,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:14:56,689 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:14:56,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:14:56,690 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:14:56,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:14:56,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:14:56,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:14:56,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:14:56,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:14:56,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:14:56,691 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:14:56,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:14:56,692 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:14:56,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:14:56,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:14:56,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:14:56,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:14:56,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:14:56,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:14:56,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:14:56,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:14:56,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:14:56,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:14:56,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:14:56,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:14:56,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:14:56,695 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:14:57,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:14:57,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:14:57,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:14:57,169 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:14:57,170 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:14:57,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sorting_selectionsort_2_ground.i [2020-10-27 14:14:57,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c733ed5a/3f529ce35fc445b5bc085fafb7216729/FLAGc009db4a7 [2020-10-27 14:14:57,859 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:14:57,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/sorting_selectionsort_2_ground.i [2020-10-27 14:14:57,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c733ed5a/3f529ce35fc445b5bc085fafb7216729/FLAGc009db4a7 [2020-10-27 14:14:58,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c733ed5a/3f529ce35fc445b5bc085fafb7216729 [2020-10-27 14:14:58,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:14:58,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:14:58,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:14:58,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:14:58,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:14:58,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:14:58" (1/1) ... [2020-10-27 14:14:58,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@677c02ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:58, skipping insertion in model container [2020-10-27 14:14:58,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:14:58" (1/1) ... [2020-10-27 14:14:58,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:14:58,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:14:58,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:14:58,599 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:14:58,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:14:58,675 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:14:58,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:58 WrapperNode [2020-10-27 14:14:58,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:14:58,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:14:58,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:14:58,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:14:58,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:58" (1/1) ... [2020-10-27 14:14:58,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:58" (1/1) ... [2020-10-27 14:14:58,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:58" (1/1) ... [2020-10-27 14:14:58,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:58" (1/1) ... [2020-10-27 14:14:58,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:58" (1/1) ... [2020-10-27 14:14:58,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:58" (1/1) ... [2020-10-27 14:14:58,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:58" (1/1) ... [2020-10-27 14:14:58,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:14:58,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:14:58,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:14:58,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:14:58,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:58" (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 [2020-10-27 14:14:58,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:14:58,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:14:58,924 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:14:58,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:14:58,925 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:14:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:14:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:14:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:14:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:14:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:14:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:14:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:14:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:14:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:14:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:14:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:14:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:14:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:14:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:14:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:14:59,396 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:14:59,397 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-27 14:14:59,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:14:59 BoogieIcfgContainer [2020-10-27 14:14:59,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:14:59,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:14:59,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:14:59,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:14:59,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:14:58" (1/3) ... [2020-10-27 14:14:59,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622db8b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:14:59, skipping insertion in model container [2020-10-27 14:14:59,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:58" (2/3) ... [2020-10-27 14:14:59,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622db8b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:14:59, skipping insertion in model container [2020-10-27 14:14:59,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:14:59" (3/3) ... [2020-10-27 14:14:59,409 INFO L111 eAbstractionObserver]: Analyzing ICFG sorting_selectionsort_2_ground.i [2020-10-27 14:14:59,421 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:14:59,427 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:14:59,442 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:14:59,470 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:14:59,471 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:14:59,471 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:14:59,471 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:14:59,471 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:14:59,471 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:14:59,471 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:14:59,471 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:14:59,491 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-27 14:14:59,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 14:14:59,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:14:59,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:14:59,500 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:14:59,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:14:59,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1006986874, now seen corresponding path program 1 times [2020-10-27 14:14:59,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:14:59,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446033425] [2020-10-27 14:14:59,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:14:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:59,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:59,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:59,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:59,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:14:59,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:14:59,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-27 14:14:59,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:59,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:59,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 14:14:59,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:59,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 14:15:00,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:00,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:00,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:00,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:00,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:00,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 14:15:00,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:00,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:00,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:00,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:00,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:15:00,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446033425] [2020-10-27 14:15:00,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:15:00,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:15:00,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781868524] [2020-10-27 14:15:00,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:15:00,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:00,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:15:00,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:15:00,115 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2020-10-27 14:15:00,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:00,305 INFO L93 Difference]: Finished difference Result 89 states and 133 transitions. [2020-10-27 14:15:00,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:15:00,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-27 14:15:00,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:00,321 INFO L225 Difference]: With dead ends: 89 [2020-10-27 14:15:00,321 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 14:15:00,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:15:00,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 14:15:00,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-27 14:15:00,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 14:15:00,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2020-10-27 14:15:00,398 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 18 [2020-10-27 14:15:00,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:00,398 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2020-10-27 14:15:00,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:15:00,399 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2020-10-27 14:15:00,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 14:15:00,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:00,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:00,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:15:00,403 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:00,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:00,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1889588042, now seen corresponding path program 1 times [2020-10-27 14:15:00,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:00,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017969004] [2020-10-27 14:15:00,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:00,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:00,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:00,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:00,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:15:00,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:15:00,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-27 14:15:00,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:00,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:00,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:15:00,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:15:00,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:00,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:00,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:00,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:00,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:00,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:00,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:15:00,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:00,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:00,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:00,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:00,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:00,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:15:00,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017969004] [2020-10-27 14:15:00,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:15:00,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:15:00,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067838172] [2020-10-27 14:15:00,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:15:00,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:00,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:15:00,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:15:00,806 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand 4 states. [2020-10-27 14:15:01,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:01,013 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2020-10-27 14:15:01,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:15:01,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-27 14:15:01,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:01,015 INFO L225 Difference]: With dead ends: 96 [2020-10-27 14:15:01,015 INFO L226 Difference]: Without dead ends: 62 [2020-10-27 14:15:01,017 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 [2020-10-27 14:15:01,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-27 14:15:01,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 44. [2020-10-27 14:15:01,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 14:15:01,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2020-10-27 14:15:01,031 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 18 [2020-10-27 14:15:01,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:01,031 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2020-10-27 14:15:01,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:15:01,031 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2020-10-27 14:15:01,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 14:15:01,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:01,033 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] [2020-10-27 14:15:01,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:15:01,033 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:01,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:01,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1755591569, now seen corresponding path program 1 times [2020-10-27 14:15:01,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:01,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004339643] [2020-10-27 14:15:01,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:01,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:01,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:01,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:01,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:01,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:15:01,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:01,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-10-27 14:15:01,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:15:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:15:01,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:15:01,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:01,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:01,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:01,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:01,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:01,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:15:01,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:01,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:01,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:01,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:15:01,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004339643] [2020-10-27 14:15:01,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:15:01,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:15:01,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779119374] [2020-10-27 14:15:01,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:15:01,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:01,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:15:01,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:15:01,825 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 4 states. [2020-10-27 14:15:01,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:01,976 INFO L93 Difference]: Finished difference Result 78 states and 100 transitions. [2020-10-27 14:15:01,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:15:01,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-27 14:15:01,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:01,978 INFO L225 Difference]: With dead ends: 78 [2020-10-27 14:15:01,978 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 14:15:01,979 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 [2020-10-27 14:15:01,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 14:15:01,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-27 14:15:01,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 14:15:01,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-10-27 14:15:01,989 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 22 [2020-10-27 14:15:01,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:01,990 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-10-27 14:15:01,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:15:01,990 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-10-27 14:15:01,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 14:15:01,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:01,991 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] [2020-10-27 14:15:01,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:15:01,992 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:01,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:01,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1087182982, now seen corresponding path program 1 times [2020-10-27 14:15:01,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:01,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227497630] [2020-10-27 14:15:01,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:02,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:02,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:02,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:02,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:03,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:03,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 14:15:03,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:15:03,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1338 [2020-10-27 14:15:03,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:15:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:15:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:03,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:03,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:03,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:03,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:03,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:03,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:03,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:03,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:03,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:03,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:03,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:03,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:15:03,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227497630] [2020-10-27 14:15:03,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:03,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:15:03,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535716191] [2020-10-27 14:15:03,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:15:03,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:03,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:15:03,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:15:03,418 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 5 states. [2020-10-27 14:15:03,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:03,662 INFO L93 Difference]: Finished difference Result 99 states and 129 transitions. [2020-10-27 14:15:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:15:03,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-27 14:15:03,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:03,665 INFO L225 Difference]: With dead ends: 99 [2020-10-27 14:15:03,665 INFO L226 Difference]: Without dead ends: 65 [2020-10-27 14:15:03,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:15:03,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-27 14:15:03,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 50. [2020-10-27 14:15:03,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 14:15:03,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2020-10-27 14:15:03,676 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 25 [2020-10-27 14:15:03,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:03,676 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2020-10-27 14:15:03,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:15:03,676 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2020-10-27 14:15:03,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 14:15:03,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:03,677 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] [2020-10-27 14:15:03,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:15:03,678 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:03,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:03,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1480209992, now seen corresponding path program 1 times [2020-10-27 14:15:03,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:03,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426945944] [2020-10-27 14:15:03,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:03,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:03,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:03,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:03,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:04,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:04,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 14:15:04,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:15:04,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-10-27 14:15:04,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:15:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:15:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:04,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:04,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:04,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:04,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:04,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:04,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:04,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:15:04,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:04,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:04,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:04,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:04,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:04,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:15:04,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426945944] [2020-10-27 14:15:04,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:04,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:15:04,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204231262] [2020-10-27 14:15:04,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:15:04,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:04,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:15:04,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:15:04,804 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand 6 states. [2020-10-27 14:15:05,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:05,072 INFO L93 Difference]: Finished difference Result 121 states and 163 transitions. [2020-10-27 14:15:05,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:15:05,073 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-27 14:15:05,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:05,077 INFO L225 Difference]: With dead ends: 121 [2020-10-27 14:15:05,077 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 14:15:05,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:15:05,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 14:15:05,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 56. [2020-10-27 14:15:05,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 14:15:05,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2020-10-27 14:15:05,100 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 25 [2020-10-27 14:15:05,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:05,100 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2020-10-27 14:15:05,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:15:05,100 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2020-10-27 14:15:05,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 14:15:05,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:05,105 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:05,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:15:05,105 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:05,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:05,106 INFO L82 PathProgramCache]: Analyzing trace with hash 4648079, now seen corresponding path program 2 times [2020-10-27 14:15:05,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:05,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595472683] [2020-10-27 14:15:05,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:05,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:05,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:05,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:05,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:07,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:07,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:15:07,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:15:07,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2491 [2020-10-27 14:15:07,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:07,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:15:07,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:15:07,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:07,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:07,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:07,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:07,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:07,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:07,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:07,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:15:07,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:07,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:07,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:15:07,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595472683] [2020-10-27 14:15:07,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:07,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:15:07,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136291158] [2020-10-27 14:15:07,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:15:07,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:07,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:15:07,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:15:07,791 INFO L87 Difference]: Start difference. First operand 56 states and 71 transitions. Second operand 8 states. [2020-10-27 14:15:08,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:08,275 INFO L93 Difference]: Finished difference Result 122 states and 160 transitions. [2020-10-27 14:15:08,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:15:08,277 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-27 14:15:08,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:08,278 INFO L225 Difference]: With dead ends: 122 [2020-10-27 14:15:08,278 INFO L226 Difference]: Without dead ends: 83 [2020-10-27 14:15:08,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:15:08,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-27 14:15:08,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 59. [2020-10-27 14:15:08,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-27 14:15:08,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2020-10-27 14:15:08,296 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 28 [2020-10-27 14:15:08,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:08,296 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2020-10-27 14:15:08,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:15:08,297 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2020-10-27 14:15:08,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 14:15:08,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:08,298 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:15:08,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:15:08,299 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:08,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:08,304 INFO L82 PathProgramCache]: Analyzing trace with hash -975184945, now seen corresponding path program 1 times [2020-10-27 14:15:08,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:08,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734629112] [2020-10-27 14:15:08,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:08,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:08,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:08,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:08,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:09,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:09,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:15:09,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:15:09,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1512 [2020-10-27 14:15:09,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:09,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:15:09,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:15:09,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:15:09,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:09,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:09,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:09,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:09,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:09,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:09,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:15:09,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:09,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:15:09,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:15:09,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734629112] [2020-10-27 14:15:09,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:09,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:15:09,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587978658] [2020-10-27 14:15:09,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:15:09,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:09,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:15:09,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:15:09,955 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand 8 states. [2020-10-27 14:15:10,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:10,431 INFO L93 Difference]: Finished difference Result 172 states and 233 transitions. [2020-10-27 14:15:10,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:15:10,432 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-27 14:15:10,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:10,434 INFO L225 Difference]: With dead ends: 172 [2020-10-27 14:15:10,434 INFO L226 Difference]: Without dead ends: 129 [2020-10-27 14:15:10,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:15:10,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-27 14:15:10,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 74. [2020-10-27 14:15:10,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 14:15:10,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2020-10-27 14:15:10,456 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 28 [2020-10-27 14:15:10,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:10,456 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2020-10-27 14:15:10,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:15:10,457 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2020-10-27 14:15:10,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 14:15:10,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:10,458 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:15:10,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:15:10,461 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:10,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:10,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1016420275, now seen corresponding path program 1 times [2020-10-27 14:15:10,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:10,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089577408] [2020-10-27 14:15:10,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:10,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:10,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:10,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:10,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:12,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:12,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:15:12,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:15:12,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1576 [2020-10-27 14:15:12,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:15:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:15:12,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:12,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:15:12,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:12,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:12,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:12,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:12,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:12,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 14:15:12,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:12,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:15:12,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089577408] [2020-10-27 14:15:12,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:12,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:15:12,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141044878] [2020-10-27 14:15:12,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:15:12,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:12,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:15:12,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:15:12,200 INFO L87 Difference]: Start difference. First operand 74 states and 97 transitions. Second operand 6 states. [2020-10-27 14:15:12,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:12,486 INFO L93 Difference]: Finished difference Result 153 states and 207 transitions. [2020-10-27 14:15:12,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:15:12,490 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-27 14:15:12,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:12,492 INFO L225 Difference]: With dead ends: 153 [2020-10-27 14:15:12,492 INFO L226 Difference]: Without dead ends: 102 [2020-10-27 14:15:12,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:15:12,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-27 14:15:12,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 78. [2020-10-27 14:15:12,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-27 14:15:12,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 102 transitions. [2020-10-27 14:15:12,510 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 102 transitions. Word has length 28 [2020-10-27 14:15:12,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:12,511 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 102 transitions. [2020-10-27 14:15:12,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:15:12,511 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 102 transitions. [2020-10-27 14:15:12,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 14:15:12,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:12,513 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:12,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:15:12,515 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:12,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:12,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1603226289, now seen corresponding path program 1 times [2020-10-27 14:15:12,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:12,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670906910] [2020-10-27 14:15:12,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:12,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:12,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:12,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:13,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:13,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:15:13,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:13,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-10-27 14:15:13,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:15:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:15:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:15:13,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:13,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:13,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:13,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:13,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:13,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:13,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:13,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:13,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:13,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:13,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:13,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:15:13,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670906910] [2020-10-27 14:15:13,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:15:13,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 14:15:13,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402524225] [2020-10-27 14:15:13,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:15:13,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:13,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:15:13,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:15:13,103 INFO L87 Difference]: Start difference. First operand 78 states and 102 transitions. Second operand 5 states. [2020-10-27 14:15:13,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:13,311 INFO L93 Difference]: Finished difference Result 134 states and 177 transitions. [2020-10-27 14:15:13,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:15:13,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-27 14:15:13,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:13,313 INFO L225 Difference]: With dead ends: 134 [2020-10-27 14:15:13,313 INFO L226 Difference]: Without dead ends: 89 [2020-10-27 14:15:13,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:15:13,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-27 14:15:13,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2020-10-27 14:15:13,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-27 14:15:13,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 107 transitions. [2020-10-27 14:15:13,335 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 107 transitions. Word has length 28 [2020-10-27 14:15:13,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:13,335 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 107 transitions. [2020-10-27 14:15:13,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:15:13,336 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 107 transitions. [2020-10-27 14:15:13,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 14:15:13,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:13,337 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:13,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:15:13,339 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:13,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:13,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1031839791, now seen corresponding path program 1 times [2020-10-27 14:15:13,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:13,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121445011] [2020-10-27 14:15:13,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:13,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:13,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:13,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:13,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:13,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 14:15:13,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:13,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-10-27 14:15:13,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:13,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:15:13,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:15:13,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 14:15:13,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:14,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:14,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:14,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:14,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:14,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:14,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:14,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:14,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:14,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:14,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:14,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:15:14,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121445011] [2020-10-27 14:15:14,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:14,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:15:14,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293960884] [2020-10-27 14:15:14,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:15:14,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:14,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:15:14,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:15:14,014 INFO L87 Difference]: Start difference. First operand 82 states and 107 transitions. Second operand 8 states. [2020-10-27 14:15:14,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:14,611 INFO L93 Difference]: Finished difference Result 235 states and 319 transitions. [2020-10-27 14:15:14,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:15:14,612 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-27 14:15:14,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:14,614 INFO L225 Difference]: With dead ends: 235 [2020-10-27 14:15:14,614 INFO L226 Difference]: Without dead ends: 187 [2020-10-27 14:15:14,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:15:14,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-27 14:15:14,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 119. [2020-10-27 14:15:14,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-27 14:15:14,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 160 transitions. [2020-10-27 14:15:14,627 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 160 transitions. Word has length 29 [2020-10-27 14:15:14,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:14,627 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 160 transitions. [2020-10-27 14:15:14,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:15:14,628 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 160 transitions. [2020-10-27 14:15:14,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 14:15:14,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:14,629 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-27 14:15:14,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:15:14,629 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:14,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:14,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1484160902, now seen corresponding path program 1 times [2020-10-27 14:15:14,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:14,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254444978] [2020-10-27 14:15:14,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:14,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:14,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:14,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:15,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:15,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:15:15,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:15,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 811 [2020-10-27 14:15:15,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:15:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:15:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:15:15,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:15,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:15,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:15,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:15,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:15,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:15,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:15,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:15,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:15:15,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254444978] [2020-10-27 14:15:15,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:15,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:15:15,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947994011] [2020-10-27 14:15:15,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:15:15,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:15,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:15:15,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:15:15,548 INFO L87 Difference]: Start difference. First operand 119 states and 160 transitions. Second operand 9 states. [2020-10-27 14:15:16,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:16,308 INFO L93 Difference]: Finished difference Result 367 states and 509 transitions. [2020-10-27 14:15:16,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:15:16,308 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-27 14:15:16,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:16,311 INFO L225 Difference]: With dead ends: 367 [2020-10-27 14:15:16,312 INFO L226 Difference]: Without dead ends: 282 [2020-10-27 14:15:16,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:15:16,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-27 14:15:16,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 133. [2020-10-27 14:15:16,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-27 14:15:16,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 180 transitions. [2020-10-27 14:15:16,332 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 180 transitions. Word has length 32 [2020-10-27 14:15:16,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:16,332 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 180 transitions. [2020-10-27 14:15:16,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:15:16,332 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 180 transitions. [2020-10-27 14:15:16,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 14:15:16,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:16,334 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:16,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:15:16,335 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:16,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:16,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1842644595, now seen corresponding path program 2 times [2020-10-27 14:15:16,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:16,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392720361] [2020-10-27 14:15:16,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:16,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:16,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:16,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:17,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:17,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 14:15:17,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:17,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1224 [2020-10-27 14:15:17,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:17,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:15:17,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:15:17,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 14:15:17,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:17,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:17,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:17,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:17,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:17,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:17,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:17,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:17,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:17,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:17,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:17,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:15:17,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392720361] [2020-10-27 14:15:17,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:17,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:15:17,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264358132] [2020-10-27 14:15:17,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:15:17,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:17,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:15:17,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:15:17,699 INFO L87 Difference]: Start difference. First operand 133 states and 180 transitions. Second operand 10 states. [2020-10-27 14:15:18,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:18,665 INFO L93 Difference]: Finished difference Result 437 states and 612 transitions. [2020-10-27 14:15:18,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:15:18,666 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-27 14:15:18,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:18,668 INFO L225 Difference]: With dead ends: 437 [2020-10-27 14:15:18,669 INFO L226 Difference]: Without dead ends: 346 [2020-10-27 14:15:18,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:15:18,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-27 14:15:18,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 145. [2020-10-27 14:15:18,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-27 14:15:18,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 198 transitions. [2020-10-27 14:15:18,688 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 198 transitions. Word has length 35 [2020-10-27 14:15:18,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:18,689 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 198 transitions. [2020-10-27 14:15:18,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:15:18,689 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 198 transitions. [2020-10-27 14:15:18,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-27 14:15:18,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:18,690 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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] [2020-10-27 14:15:18,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:15:18,690 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:18,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:18,691 INFO L82 PathProgramCache]: Analyzing trace with hash -39883226, now seen corresponding path program 3 times [2020-10-27 14:15:18,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:18,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191464104] [2020-10-27 14:15:18,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:18,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:18,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:18,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:20,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:20,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:15:20,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:20,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1414 [2020-10-27 14:15:20,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:20,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:15:20,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:15:20,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:15:20,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:20,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:20,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:20,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:20,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:20,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:20,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:20,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:20,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:20,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:20,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:20,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:20,238 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:15:20,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191464104] [2020-10-27 14:15:20,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:20,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:15:20,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517224101] [2020-10-27 14:15:20,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:15:20,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:20,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:15:20,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:15:20,241 INFO L87 Difference]: Start difference. First operand 145 states and 198 transitions. Second operand 11 states. [2020-10-27 14:15:21,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:21,238 INFO L93 Difference]: Finished difference Result 502 states and 708 transitions. [2020-10-27 14:15:21,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:15:21,238 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-10-27 14:15:21,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:21,241 INFO L225 Difference]: With dead ends: 502 [2020-10-27 14:15:21,242 INFO L226 Difference]: Without dead ends: 405 [2020-10-27 14:15:21,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:15:21,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-10-27 14:15:21,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 157. [2020-10-27 14:15:21,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-27 14:15:21,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 216 transitions. [2020-10-27 14:15:21,263 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 216 transitions. Word has length 38 [2020-10-27 14:15:21,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:21,263 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 216 transitions. [2020-10-27 14:15:21,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:15:21,263 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 216 transitions. [2020-10-27 14:15:21,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 14:15:21,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:21,264 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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] [2020-10-27 14:15:21,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:15:21,265 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:21,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:21,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1752991469, now seen corresponding path program 4 times [2020-10-27 14:15:21,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:21,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814835042] [2020-10-27 14:15:21,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:21,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:21,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:21,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:22,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:22,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 14:15:22,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:22,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1644 [2020-10-27 14:15:22,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:22,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:15:22,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:15:22,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 14:15:22,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:23,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:23,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:23,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:23,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:23,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:23,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:23,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:23,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:23,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:23,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:23,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:23,062 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:15:23,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814835042] [2020-10-27 14:15:23,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:23,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:15:23,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714725423] [2020-10-27 14:15:23,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:15:23,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:23,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:15:23,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:15:23,065 INFO L87 Difference]: Start difference. First operand 157 states and 216 transitions. Second operand 12 states. [2020-10-27 14:15:24,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:24,324 INFO L93 Difference]: Finished difference Result 567 states and 804 transitions. [2020-10-27 14:15:24,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:15:24,325 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-27 14:15:24,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:24,331 INFO L225 Difference]: With dead ends: 567 [2020-10-27 14:15:24,331 INFO L226 Difference]: Without dead ends: 464 [2020-10-27 14:15:24,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=228, Invalid=474, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:15:24,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-10-27 14:15:24,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 169. [2020-10-27 14:15:24,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-27 14:15:24,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 234 transitions. [2020-10-27 14:15:24,359 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 234 transitions. Word has length 41 [2020-10-27 14:15:24,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:24,360 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 234 transitions. [2020-10-27 14:15:24,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:15:24,360 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 234 transitions. [2020-10-27 14:15:24,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 14:15:24,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:24,361 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 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] [2020-10-27 14:15:24,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:15:24,362 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:24,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:24,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1069737158, now seen corresponding path program 5 times [2020-10-27 14:15:24,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:24,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883954392] [2020-10-27 14:15:24,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:24,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:24,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:24,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:26,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:26,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:15:26,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:26,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1855 [2020-10-27 14:15:26,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:26,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:15:26,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:15:26,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:15:26,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:26,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:26,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:26,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:26,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:26,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:26,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:26,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:26,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:26,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:26,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:26,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:26,389 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:15:26,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883954392] [2020-10-27 14:15:26,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:26,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:15:26,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483036588] [2020-10-27 14:15:26,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:15:26,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:26,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:15:26,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:15:26,392 INFO L87 Difference]: Start difference. First operand 169 states and 234 transitions. Second operand 13 states. [2020-10-27 14:15:27,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:27,853 INFO L93 Difference]: Finished difference Result 632 states and 900 transitions. [2020-10-27 14:15:27,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:15:27,854 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-10-27 14:15:27,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:27,858 INFO L225 Difference]: With dead ends: 632 [2020-10-27 14:15:27,858 INFO L226 Difference]: Without dead ends: 523 [2020-10-27 14:15:27,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=283, Invalid=587, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:15:27,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-10-27 14:15:27,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 181. [2020-10-27 14:15:27,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-27 14:15:27,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 252 transitions. [2020-10-27 14:15:27,881 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 252 transitions. Word has length 44 [2020-10-27 14:15:27,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:27,882 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 252 transitions. [2020-10-27 14:15:27,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:15:27,882 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 252 transitions. [2020-10-27 14:15:27,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 14:15:27,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:27,883 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 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] [2020-10-27 14:15:27,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:15:27,883 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:27,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:27,884 INFO L82 PathProgramCache]: Analyzing trace with hash 90573901, now seen corresponding path program 6 times [2020-10-27 14:15:27,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:27,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175987333] [2020-10-27 14:15:27,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:27,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:27,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:27,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:30,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:30,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 14:15:30,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:30,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2338 [2020-10-27 14:15:30,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:30,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:15:30,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:15:30,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 14:15:30,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:30,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:30,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:30,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:30,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:30,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:30,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:30,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:30,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:30,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:30,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:30,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:15:30,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175987333] [2020-10-27 14:15:30,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:30,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:15:30,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802733715] [2020-10-27 14:15:30,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:15:30,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:30,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:15:30,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:15:30,406 INFO L87 Difference]: Start difference. First operand 181 states and 252 transitions. Second operand 14 states. [2020-10-27 14:15:31,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:31,930 INFO L93 Difference]: Finished difference Result 697 states and 996 transitions. [2020-10-27 14:15:31,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:15:31,931 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-10-27 14:15:31,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:31,935 INFO L225 Difference]: With dead ends: 697 [2020-10-27 14:15:31,935 INFO L226 Difference]: Without dead ends: 582 [2020-10-27 14:15:31,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=344, Invalid=712, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:15:31,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-10-27 14:15:31,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 193. [2020-10-27 14:15:31,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-27 14:15:31,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 270 transitions. [2020-10-27 14:15:31,958 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 270 transitions. Word has length 47 [2020-10-27 14:15:31,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:31,959 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 270 transitions. [2020-10-27 14:15:31,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:15:31,959 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 270 transitions. [2020-10-27 14:15:31,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 14:15:31,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:31,960 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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] [2020-10-27 14:15:31,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:15:31,960 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:31,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:31,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1255859046, now seen corresponding path program 7 times [2020-10-27 14:15:31,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:31,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609333316] [2020-10-27 14:15:31,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:31,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:31,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:32,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:34,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:34,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:15:34,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:34,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2720 [2020-10-27 14:15:34,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:34,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:15:34,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:15:34,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:15:34,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:34,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:34,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:34,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:34,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:34,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:34,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:34,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:34,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:34,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:34,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:34,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:34,890 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:15:34,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609333316] [2020-10-27 14:15:34,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:34,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:15:34,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363589839] [2020-10-27 14:15:34,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:15:34,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:34,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:15:34,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:15:34,896 INFO L87 Difference]: Start difference. First operand 193 states and 270 transitions. Second operand 15 states. [2020-10-27 14:15:36,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:36,770 INFO L93 Difference]: Finished difference Result 762 states and 1092 transitions. [2020-10-27 14:15:36,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:15:36,771 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2020-10-27 14:15:36,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:36,776 INFO L225 Difference]: With dead ends: 762 [2020-10-27 14:15:36,776 INFO L226 Difference]: Without dead ends: 641 [2020-10-27 14:15:36,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=411, Invalid=849, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:15:36,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2020-10-27 14:15:36,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 205. [2020-10-27 14:15:36,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-27 14:15:36,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 288 transitions. [2020-10-27 14:15:36,799 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 288 transitions. Word has length 50 [2020-10-27 14:15:36,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:36,800 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 288 transitions. [2020-10-27 14:15:36,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:15:36,800 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 288 transitions. [2020-10-27 14:15:36,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 14:15:36,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:36,801 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 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] [2020-10-27 14:15:36,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:15:36,801 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:36,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:36,802 INFO L82 PathProgramCache]: Analyzing trace with hash 44960173, now seen corresponding path program 8 times [2020-10-27 14:15:36,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:36,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591732926] [2020-10-27 14:15:36,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:36,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:36,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:36,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:39,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:39,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 14:15:39,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:39,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2723 [2020-10-27 14:15:39,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:39,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:15:39,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:15:39,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 14:15:39,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:39,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:39,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:39,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:39,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:39,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:39,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:39,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:39,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:39,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:39,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:39,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:39,763 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:15:39,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591732926] [2020-10-27 14:15:39,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:39,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:15:39,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212463352] [2020-10-27 14:15:39,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:15:39,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:39,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:15:39,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:15:39,765 INFO L87 Difference]: Start difference. First operand 205 states and 288 transitions. Second operand 16 states. [2020-10-27 14:15:41,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:41,887 INFO L93 Difference]: Finished difference Result 827 states and 1188 transitions. [2020-10-27 14:15:41,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 14:15:41,892 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-10-27 14:15:41,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:41,896 INFO L225 Difference]: With dead ends: 827 [2020-10-27 14:15:41,896 INFO L226 Difference]: Without dead ends: 700 [2020-10-27 14:15:41,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=484, Invalid=998, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:15:41,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-27 14:15:41,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 217. [2020-10-27 14:15:41,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-27 14:15:41,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 306 transitions. [2020-10-27 14:15:41,924 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 306 transitions. Word has length 53 [2020-10-27 14:15:41,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:41,924 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 306 transitions. [2020-10-27 14:15:41,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:15:41,925 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 306 transitions. [2020-10-27 14:15:41,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 14:15:41,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:41,925 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 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] [2020-10-27 14:15:41,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:15:41,926 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:41,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:41,926 INFO L82 PathProgramCache]: Analyzing trace with hash -413046266, now seen corresponding path program 9 times [2020-10-27 14:15:41,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:41,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106493854] [2020-10-27 14:15:41,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:41,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:41,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:41,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:45,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:45,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:15:45,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:45,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3358 [2020-10-27 14:15:45,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:45,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:15:45,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:15:45,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:15:45,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:45,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:45,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:45,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:45,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:45,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:45,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:45,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:45,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:45,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:45,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:45,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:15:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:15:45,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106493854] [2020-10-27 14:15:45,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:45,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:15:45,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956286060] [2020-10-27 14:15:45,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:15:45,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:45,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:15:45,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:15:45,576 INFO L87 Difference]: Start difference. First operand 217 states and 306 transitions. Second operand 17 states. [2020-10-27 14:15:47,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:47,914 INFO L93 Difference]: Finished difference Result 892 states and 1284 transitions. [2020-10-27 14:15:47,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 14:15:47,915 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-27 14:15:47,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:47,919 INFO L225 Difference]: With dead ends: 892 [2020-10-27 14:15:47,919 INFO L226 Difference]: Without dead ends: 759 [2020-10-27 14:15:47,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=563, Invalid=1159, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:15:47,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2020-10-27 14:15:47,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 229. [2020-10-27 14:15:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-27 14:15:47,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 324 transitions. [2020-10-27 14:15:47,951 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 324 transitions. Word has length 56 [2020-10-27 14:15:47,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:47,951 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 324 transitions. [2020-10-27 14:15:47,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:15:47,951 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 324 transitions. [2020-10-27 14:15:47,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 14:15:47,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:47,952 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 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] [2020-10-27 14:15:47,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:15:47,953 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:47,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:47,953 INFO L82 PathProgramCache]: Analyzing trace with hash 228228877, now seen corresponding path program 10 times [2020-10-27 14:15:47,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:47,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446977338] [2020-10-27 14:15:47,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:47,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:47,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:48,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:50,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:50,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 14:15:50,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:50,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2924 [2020-10-27 14:15:50,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:15:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:15:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 14:15:50,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:51,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:51,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:51,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:51,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:51,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:51,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:15:51,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:51,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:51,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:51,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:51,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:15:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:15:51,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446977338] [2020-10-27 14:15:51,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:51,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:15:51,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766060669] [2020-10-27 14:15:51,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:15:51,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:51,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:15:51,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:15:51,179 INFO L87 Difference]: Start difference. First operand 229 states and 324 transitions. Second operand 18 states. [2020-10-27 14:15:53,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:53,849 INFO L93 Difference]: Finished difference Result 957 states and 1380 transitions. [2020-10-27 14:15:53,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 14:15:53,854 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 59 [2020-10-27 14:15:53,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:53,859 INFO L225 Difference]: With dead ends: 957 [2020-10-27 14:15:53,859 INFO L226 Difference]: Without dead ends: 818 [2020-10-27 14:15:53,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=648, Invalid=1332, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 14:15:53,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2020-10-27 14:15:53,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 241. [2020-10-27 14:15:53,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-27 14:15:53,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 342 transitions. [2020-10-27 14:15:53,892 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 342 transitions. Word has length 59 [2020-10-27 14:15:53,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:53,893 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 342 transitions. [2020-10-27 14:15:53,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:15:53,893 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 342 transitions. [2020-10-27 14:15:53,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 14:15:53,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:53,894 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 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] [2020-10-27 14:15:53,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:15:53,894 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:53,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:53,894 INFO L82 PathProgramCache]: Analyzing trace with hash 441481382, now seen corresponding path program 11 times [2020-10-27 14:15:53,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:53,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836735460] [2020-10-27 14:15:53,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:53,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:53,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:54,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:57,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:57,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 14:15:57,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:57,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3647 [2020-10-27 14:15:57,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:57,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:15:57,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:15:57,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:15:57,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:57,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:57,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:57,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:57,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:57,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:57,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:57,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:57,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:57,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:57,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:57,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:15:57,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836735460] [2020-10-27 14:15:57,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:57,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:15:57,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650655932] [2020-10-27 14:15:57,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:15:57,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:57,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:15:57,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=216, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:15:57,829 INFO L87 Difference]: Start difference. First operand 241 states and 342 transitions. Second operand 19 states. [2020-10-27 14:16:00,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:16:00,546 INFO L93 Difference]: Finished difference Result 1022 states and 1476 transitions. [2020-10-27 14:16:00,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-27 14:16:00,546 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 62 [2020-10-27 14:16:00,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:16:00,551 INFO L225 Difference]: With dead ends: 1022 [2020-10-27 14:16:00,551 INFO L226 Difference]: Without dead ends: 877 [2020-10-27 14:16:00,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=739, Invalid=1517, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 14:16:00,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2020-10-27 14:16:00,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 253. [2020-10-27 14:16:00,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-27 14:16:00,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 360 transitions. [2020-10-27 14:16:00,585 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 360 transitions. Word has length 62 [2020-10-27 14:16:00,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:16:00,585 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 360 transitions. [2020-10-27 14:16:00,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:16:00,585 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 360 transitions. [2020-10-27 14:16:00,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 14:16:00,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:16:00,586 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 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] [2020-10-27 14:16:00,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:16:00,586 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:16:00,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:16:00,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1190227053, now seen corresponding path program 12 times [2020-10-27 14:16:00,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:16:00,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554301614] [2020-10-27 14:16:00,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:16:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:00,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:00,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:01,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:03,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:03,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 14:16:03,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:16:03,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2600 [2020-10-27 14:16:03,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:03,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:16:03,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:16:03,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 14:16:03,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:03,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:16:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:03,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:03,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:03,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:16:03,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:03,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:03,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:03,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:16:03,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:03,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:16:03,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:16:03,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554301614] [2020-10-27 14:16:03,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:16:03,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:16:03,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539154937] [2020-10-27 14:16:03,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:16:03,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:16:03,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:16:03,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=238, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:16:03,524 INFO L87 Difference]: Start difference. First operand 253 states and 360 transitions. Second operand 20 states. [2020-10-27 14:16:06,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:16:06,603 INFO L93 Difference]: Finished difference Result 1087 states and 1572 transitions. [2020-10-27 14:16:06,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-27 14:16:06,606 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 65 [2020-10-27 14:16:06,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:16:06,611 INFO L225 Difference]: With dead ends: 1087 [2020-10-27 14:16:06,612 INFO L226 Difference]: Without dead ends: 936 [2020-10-27 14:16:06,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=836, Invalid=1714, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 14:16:06,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2020-10-27 14:16:06,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 265. [2020-10-27 14:16:06,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-27 14:16:06,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 378 transitions. [2020-10-27 14:16:06,647 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 378 transitions. Word has length 65 [2020-10-27 14:16:06,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:16:06,647 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 378 transitions. [2020-10-27 14:16:06,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:16:06,647 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 378 transitions. [2020-10-27 14:16:06,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 14:16:06,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:16:06,648 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 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] [2020-10-27 14:16:06,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:16:06,648 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:16:06,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:16:06,649 INFO L82 PathProgramCache]: Analyzing trace with hash -987623610, now seen corresponding path program 13 times [2020-10-27 14:16:06,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:16:06,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617682221] [2020-10-27 14:16:06,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:16:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:06,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:06,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:07,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:10,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:10,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 14:16:10,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:16:10,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3947 [2020-10-27 14:16:10,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:10,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:16:10,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:16:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:16:10,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:10,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:16:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:10,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:10,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:10,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:16:10,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:10,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:10,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:10,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:16:10,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:10,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:16:10,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:10,929 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:16:10,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617682221] [2020-10-27 14:16:10,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:16:10,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:16:10,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336103401] [2020-10-27 14:16:10,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:16:10,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:16:10,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:16:10,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=261, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:16:10,931 INFO L87 Difference]: Start difference. First operand 265 states and 378 transitions. Second operand 21 states. [2020-10-27 14:16:14,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:16:14,165 INFO L93 Difference]: Finished difference Result 1152 states and 1668 transitions. [2020-10-27 14:16:14,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-27 14:16:14,167 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 68 [2020-10-27 14:16:14,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:16:14,172 INFO L225 Difference]: With dead ends: 1152 [2020-10-27 14:16:14,173 INFO L226 Difference]: Without dead ends: 995 [2020-10-27 14:16:14,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=939, Invalid=1923, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 14:16:14,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2020-10-27 14:16:14,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 277. [2020-10-27 14:16:14,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-27 14:16:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 396 transitions. [2020-10-27 14:16:14,213 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 396 transitions. Word has length 68 [2020-10-27 14:16:14,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:16:14,214 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 396 transitions. [2020-10-27 14:16:14,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:16:14,214 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 396 transitions. [2020-10-27 14:16:14,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 14:16:14,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:16:14,215 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 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] [2020-10-27 14:16:14,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:16:14,215 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:16:14,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:16:14,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1560751667, now seen corresponding path program 14 times [2020-10-27 14:16:14,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:16:14,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969974415] [2020-10-27 14:16:14,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:16:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:14,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:14,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:14,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:18,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:18,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 14:16:18,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:16:18,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4495 [2020-10-27 14:16:18,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:18,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:16:18,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:16:18,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 14:16:18,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:19,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:16:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:19,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:19,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:19,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:16:19,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:19,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:19,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:16:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:16:19,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:19,106 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:16:19,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969974415] [2020-10-27 14:16:19,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:16:19,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:16:19,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892808233] [2020-10-27 14:16:19,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:16:19,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:16:19,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:16:19,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:16:19,108 INFO L87 Difference]: Start difference. First operand 277 states and 396 transitions. Second operand 22 states. [2020-10-27 14:16:22,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:16:22,434 INFO L93 Difference]: Finished difference Result 1217 states and 1764 transitions. [2020-10-27 14:16:22,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-27 14:16:22,435 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 71 [2020-10-27 14:16:22,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:16:22,439 INFO L225 Difference]: With dead ends: 1217 [2020-10-27 14:16:22,439 INFO L226 Difference]: Without dead ends: 1054 [2020-10-27 14:16:22,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1048, Invalid=2144, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 14:16:22,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2020-10-27 14:16:22,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 289. [2020-10-27 14:16:22,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-27 14:16:22,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 414 transitions. [2020-10-27 14:16:22,481 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 414 transitions. Word has length 71 [2020-10-27 14:16:22,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:16:22,481 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 414 transitions. [2020-10-27 14:16:22,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:16:22,481 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 414 transitions. [2020-10-27 14:16:22,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 14:16:22,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:16:22,482 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 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] [2020-10-27 14:16:22,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:16:22,483 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:16:22,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:16:22,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1171271142, now seen corresponding path program 15 times [2020-10-27 14:16:22,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:16:22,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155625036] [2020-10-27 14:16:22,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:16:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:22,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:22,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:23,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:27,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:27,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 14:16:27,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:16:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4631 [2020-10-27 14:16:27,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:16:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:16:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:16:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:27,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:16:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:27,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:27,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:27,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:16:27,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:27,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:27,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:27,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:16:27,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:27,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:16:27,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:27,523 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:16:27,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155625036] [2020-10-27 14:16:27,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:16:27,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:16:27,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571929019] [2020-10-27 14:16:27,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:16:27,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:16:27,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:16:27,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=310, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:16:27,525 INFO L87 Difference]: Start difference. First operand 289 states and 414 transitions. Second operand 23 states. [2020-10-27 14:16:31,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:16:31,071 INFO L93 Difference]: Finished difference Result 1282 states and 1860 transitions. [2020-10-27 14:16:31,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-27 14:16:31,071 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 74 [2020-10-27 14:16:31,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:16:31,076 INFO L225 Difference]: With dead ends: 1282 [2020-10-27 14:16:31,076 INFO L226 Difference]: Without dead ends: 1113 [2020-10-27 14:16:31,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1163, Invalid=2377, Unknown=0, NotChecked=0, Total=3540 [2020-10-27 14:16:31,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2020-10-27 14:16:31,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 301. [2020-10-27 14:16:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-10-27 14:16:31,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 432 transitions. [2020-10-27 14:16:31,121 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 432 transitions. Word has length 74 [2020-10-27 14:16:31,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:16:31,121 INFO L481 AbstractCegarLoop]: Abstraction has 301 states and 432 transitions. [2020-10-27 14:16:31,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:16:31,121 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 432 transitions. [2020-10-27 14:16:31,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 14:16:31,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:16:31,122 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 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] [2020-10-27 14:16:31,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:16:31,122 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:16:31,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:16:31,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1232514861, now seen corresponding path program 16 times [2020-10-27 14:16:31,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:16:31,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318150795] [2020-10-27 14:16:31,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:16:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:31,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:31,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:31,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:36,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:36,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 14:16:36,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:16:36,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 14:16:36,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:36,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:16:36,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:16:36,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 14:16:36,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:36,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:16:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:36,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:36,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:36,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:16:36,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:36,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:36,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:36,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:16:36,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:36,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:16:36,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:36,590 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:16:36,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318150795] [2020-10-27 14:16:36,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:16:36,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:16:36,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879272879] [2020-10-27 14:16:36,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:16:36,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:16:36,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:16:36,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=336, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:16:36,592 INFO L87 Difference]: Start difference. First operand 301 states and 432 transitions. Second operand 24 states. [2020-10-27 14:16:41,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:16:41,017 INFO L93 Difference]: Finished difference Result 1347 states and 1956 transitions. [2020-10-27 14:16:41,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-27 14:16:41,018 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 77 [2020-10-27 14:16:41,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:16:41,022 INFO L225 Difference]: With dead ends: 1347 [2020-10-27 14:16:41,023 INFO L226 Difference]: Without dead ends: 1172 [2020-10-27 14:16:41,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1284, Invalid=2622, Unknown=0, NotChecked=0, Total=3906 [2020-10-27 14:16:41,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2020-10-27 14:16:41,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 313. [2020-10-27 14:16:41,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-10-27 14:16:41,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 450 transitions. [2020-10-27 14:16:41,072 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 450 transitions. Word has length 77 [2020-10-27 14:16:41,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:16:41,073 INFO L481 AbstractCegarLoop]: Abstraction has 313 states and 450 transitions. [2020-10-27 14:16:41,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:16:41,073 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 450 transitions. [2020-10-27 14:16:41,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 14:16:41,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:16:41,074 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 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] [2020-10-27 14:16:41,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:16:41,074 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:16:41,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:16:41,077 INFO L82 PathProgramCache]: Analyzing trace with hash 383046790, now seen corresponding path program 17 times [2020-10-27 14:16:41,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:16:41,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459026699] [2020-10-27 14:16:41,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:16:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:41,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:41,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:41,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:46,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:46,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 14:16:46,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:16:46,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 14:16:46,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:46,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:16:46,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:16:46,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:16:46,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:46,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:16:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:46,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:46,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:46,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:16:46,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:46,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:46,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:46,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:16:46,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:46,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:16:46,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:46,568 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:16:46,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459026699] [2020-10-27 14:16:46,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:16:46,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:16:46,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179499085] [2020-10-27 14:16:46,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:16:46,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:16:46,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:16:46,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=363, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:16:46,570 INFO L87 Difference]: Start difference. First operand 313 states and 450 transitions. Second operand 25 states. [2020-10-27 14:16:51,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:16:51,443 INFO L93 Difference]: Finished difference Result 1412 states and 2052 transitions. [2020-10-27 14:16:51,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-27 14:16:51,445 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 80 [2020-10-27 14:16:51,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:16:51,451 INFO L225 Difference]: With dead ends: 1412 [2020-10-27 14:16:51,452 INFO L226 Difference]: Without dead ends: 1231 [2020-10-27 14:16:51,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1411, Invalid=2879, Unknown=0, NotChecked=0, Total=4290 [2020-10-27 14:16:51,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2020-10-27 14:16:51,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 325. [2020-10-27 14:16:51,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-10-27 14:16:51,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 468 transitions. [2020-10-27 14:16:51,529 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 468 transitions. Word has length 80 [2020-10-27 14:16:51,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:16:51,529 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 468 transitions. [2020-10-27 14:16:51,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:16:51,530 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 468 transitions. [2020-10-27 14:16:51,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 14:16:51,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:16:51,537 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 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] [2020-10-27 14:16:51,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:16:51,537 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:16:51,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:16:51,538 INFO L82 PathProgramCache]: Analyzing trace with hash -172948339, now seen corresponding path program 18 times [2020-10-27 14:16:51,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:16:51,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401770098] [2020-10-27 14:16:51,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:16:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:51,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:51,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:52,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:56,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:56,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 14:16:56,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:16:56,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:16:56,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:56,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:16:56,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:16:56,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 14:16:56,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:57,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:16:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:57,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:57,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:57,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:16:57,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:57,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:57,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:57,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:16:57,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:57,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:16:57,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:57,113 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:16:57,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401770098] [2020-10-27 14:16:57,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:16:57,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:16:57,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598879062] [2020-10-27 14:16:57,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:16:57,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:16:57,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:16:57,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=391, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:16:57,116 INFO L87 Difference]: Start difference. First operand 325 states and 468 transitions. Second operand 26 states. [2020-10-27 14:17:01,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:17:01,893 INFO L93 Difference]: Finished difference Result 1477 states and 2148 transitions. [2020-10-27 14:17:01,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-27 14:17:01,894 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 83 [2020-10-27 14:17:01,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:17:01,899 INFO L225 Difference]: With dead ends: 1477 [2020-10-27 14:17:01,900 INFO L226 Difference]: Without dead ends: 1290 [2020-10-27 14:17:01,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1544, Invalid=3148, Unknown=0, NotChecked=0, Total=4692 [2020-10-27 14:17:01,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2020-10-27 14:17:01,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 337. [2020-10-27 14:17:01,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-27 14:17:01,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 486 transitions. [2020-10-27 14:17:01,949 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 486 transitions. Word has length 83 [2020-10-27 14:17:01,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:17:01,950 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 486 transitions. [2020-10-27 14:17:01,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:17:01,950 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 486 transitions. [2020-10-27 14:17:01,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 14:17:01,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:17:01,951 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 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] [2020-10-27 14:17:01,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:17:01,951 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:17:01,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:17:01,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1865024294, now seen corresponding path program 19 times [2020-10-27 14:17:01,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:17:01,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026978386] [2020-10-27 14:17:01,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:17:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:01,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:01,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:02,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:06,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:06,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 14:17:06,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:17:06,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:17:06,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:06,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:17:06,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:17:06,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 14:17:06,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:07,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:17:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:07,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:07,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:07,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:17:07,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:07,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:07,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:07,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:17:07,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:07,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:17:07,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:07,546 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:17:07,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026978386] [2020-10-27 14:17:07,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:17:07,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:17:07,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26952661] [2020-10-27 14:17:07,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:17:07,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:17:07,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:17:07,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=420, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:17:07,548 INFO L87 Difference]: Start difference. First operand 337 states and 486 transitions. Second operand 27 states. [2020-10-27 14:17:13,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:17:13,157 INFO L93 Difference]: Finished difference Result 1542 states and 2244 transitions. [2020-10-27 14:17:13,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-27 14:17:13,158 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 86 [2020-10-27 14:17:13,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:17:13,164 INFO L225 Difference]: With dead ends: 1542 [2020-10-27 14:17:13,164 INFO L226 Difference]: Without dead ends: 1349 [2020-10-27 14:17:13,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1683, Invalid=3429, Unknown=0, NotChecked=0, Total=5112 [2020-10-27 14:17:13,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2020-10-27 14:17:13,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 349. [2020-10-27 14:17:13,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-10-27 14:17:13,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 504 transitions. [2020-10-27 14:17:13,222 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 504 transitions. Word has length 86 [2020-10-27 14:17:13,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:17:13,222 INFO L481 AbstractCegarLoop]: Abstraction has 349 states and 504 transitions. [2020-10-27 14:17:13,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:17:13,222 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 504 transitions. [2020-10-27 14:17:13,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 14:17:13,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:17:13,224 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 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] [2020-10-27 14:17:13,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:17:13,224 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:17:13,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:17:13,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1450037741, now seen corresponding path program 20 times [2020-10-27 14:17:13,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:17:13,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045999250] [2020-10-27 14:17:13,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:17:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:13,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:13,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:14,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:18,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:18,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 14:17:18,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:17:18,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 14:17:18,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:17:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:17:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 14:17:18,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:18,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:17:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:18,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:18,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:18,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:17:18,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:18,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:18,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:17:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:17:18,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:17:18,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045999250] [2020-10-27 14:17:18,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:17:18,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:17:18,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113444112] [2020-10-27 14:17:18,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:17:18,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:17:18,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:17:18,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=450, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:17:18,886 INFO L87 Difference]: Start difference. First operand 349 states and 504 transitions. Second operand 28 states. [2020-10-27 14:17:24,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:17:24,915 INFO L93 Difference]: Finished difference Result 1607 states and 2340 transitions. [2020-10-27 14:17:24,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-10-27 14:17:24,916 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 89 [2020-10-27 14:17:24,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:17:24,922 INFO L225 Difference]: With dead ends: 1607 [2020-10-27 14:17:24,922 INFO L226 Difference]: Without dead ends: 1408 [2020-10-27 14:17:24,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1828, Invalid=3722, Unknown=0, NotChecked=0, Total=5550 [2020-10-27 14:17:24,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2020-10-27 14:17:24,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 361. [2020-10-27 14:17:24,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-10-27 14:17:24,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 522 transitions. [2020-10-27 14:17:24,991 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 522 transitions. Word has length 89 [2020-10-27 14:17:24,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:17:24,991 INFO L481 AbstractCegarLoop]: Abstraction has 361 states and 522 transitions. [2020-10-27 14:17:24,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:17:24,992 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 522 transitions. [2020-10-27 14:17:24,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 14:17:24,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:17:24,993 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 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] [2020-10-27 14:17:24,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:17:24,993 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:17:24,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:17:24,994 INFO L82 PathProgramCache]: Analyzing trace with hash -498484794, now seen corresponding path program 21 times [2020-10-27 14:17:24,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:17:24,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130517190] [2020-10-27 14:17:24,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:17:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:25,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:25,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:26,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:30,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:30,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 14:17:30,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:17:30,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:17:30,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:30,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:17:30,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:17:30,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 14:17:30,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:30,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:17:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:30,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:30,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:30,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:17:30,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:30,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:30,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:30,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:17:30,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:30,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:17:30,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:30,692 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:17:30,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130517190] [2020-10-27 14:17:30,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:17:30,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 14:17:30,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547916987] [2020-10-27 14:17:30,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 14:17:30,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:17:30,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 14:17:30,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=481, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:17:30,694 INFO L87 Difference]: Start difference. First operand 361 states and 522 transitions. Second operand 29 states. [2020-10-27 14:17:37,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:17:37,532 INFO L93 Difference]: Finished difference Result 1672 states and 2436 transitions. [2020-10-27 14:17:37,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-10-27 14:17:37,533 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 92 [2020-10-27 14:17:37,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:17:37,541 INFO L225 Difference]: With dead ends: 1672 [2020-10-27 14:17:37,541 INFO L226 Difference]: Without dead ends: 1467 [2020-10-27 14:17:37,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1436 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1979, Invalid=4027, Unknown=0, NotChecked=0, Total=6006 [2020-10-27 14:17:37,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2020-10-27 14:17:37,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 373. [2020-10-27 14:17:37,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-10-27 14:17:37,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 540 transitions. [2020-10-27 14:17:37,602 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 540 transitions. Word has length 92 [2020-10-27 14:17:37,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:17:37,602 INFO L481 AbstractCegarLoop]: Abstraction has 373 states and 540 transitions. [2020-10-27 14:17:37,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 14:17:37,603 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 540 transitions. [2020-10-27 14:17:37,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 14:17:37,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:17:37,604 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 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] [2020-10-27 14:17:37,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:17:37,604 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:17:37,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:17:37,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1844647757, now seen corresponding path program 22 times [2020-10-27 14:17:37,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:17:37,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67643692] [2020-10-27 14:17:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:17:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:37,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:37,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:38,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:42,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:42,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 14:17:42,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:17:42,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:17:42,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:42,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:17:42,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:17:42,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 14:17:42,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:43,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:17:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:43,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:43,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:43,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:17:43,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:43,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:17:43,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:43,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:17:43,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:43,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:17:43,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:43,395 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:17:43,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67643692] [2020-10-27 14:17:43,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:17:43,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:17:43,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027846459] [2020-10-27 14:17:43,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:17:43,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:17:43,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:17:43,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=513, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:17:43,398 INFO L87 Difference]: Start difference. First operand 373 states and 540 transitions. Second operand 30 states. [2020-10-27 14:17:50,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:17:50,685 INFO L93 Difference]: Finished difference Result 1737 states and 2532 transitions. [2020-10-27 14:17:50,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-10-27 14:17:50,686 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 95 [2020-10-27 14:17:50,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:17:50,693 INFO L225 Difference]: With dead ends: 1737 [2020-10-27 14:17:50,693 INFO L226 Difference]: Without dead ends: 1526 [2020-10-27 14:17:50,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2136, Invalid=4344, Unknown=0, NotChecked=0, Total=6480 [2020-10-27 14:17:50,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1526 states. [2020-10-27 14:17:50,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1526 to 385. [2020-10-27 14:17:50,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-10-27 14:17:50,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 558 transitions. [2020-10-27 14:17:50,772 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 558 transitions. Word has length 95 [2020-10-27 14:17:50,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:17:50,772 INFO L481 AbstractCegarLoop]: Abstraction has 385 states and 558 transitions. [2020-10-27 14:17:50,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:17:50,773 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 558 transitions. [2020-10-27 14:17:50,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 14:17:50,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:17:50,777 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 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] [2020-10-27 14:17:50,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:17:50,777 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:17:50,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:17:50,778 INFO L82 PathProgramCache]: Analyzing trace with hash 3012710, now seen corresponding path program 23 times [2020-10-27 14:17:50,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:17:50,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362450132] [2020-10-27 14:17:50,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:17:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:50,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:50,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:52,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:55,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:55,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 14:17:55,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:17:55,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 14:17:55,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:55,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:17:55,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:17:55,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 14:17:55,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:56,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:17:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:56,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:56,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:56,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:17:56,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:56,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:56,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:17:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:17:56,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:56,593 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:17:56,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362450132] [2020-10-27 14:17:56,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:17:56,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 14:17:56,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727043288] [2020-10-27 14:17:56,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 14:17:56,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:17:56,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 14:17:56,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=546, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:17:56,595 INFO L87 Difference]: Start difference. First operand 385 states and 558 transitions. Second operand 31 states. [2020-10-27 14:18:04,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:18:04,874 INFO L93 Difference]: Finished difference Result 1802 states and 2628 transitions. [2020-10-27 14:18:04,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-10-27 14:18:04,875 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 98 [2020-10-27 14:18:04,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:18:04,882 INFO L225 Difference]: With dead ends: 1802 [2020-10-27 14:18:04,882 INFO L226 Difference]: Without dead ends: 1585 [2020-10-27 14:18:04,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1687 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2299, Invalid=4673, Unknown=0, NotChecked=0, Total=6972 [2020-10-27 14:18:04,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2020-10-27 14:18:04,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 397. [2020-10-27 14:18:04,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-10-27 14:18:04,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 576 transitions. [2020-10-27 14:18:04,947 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 576 transitions. Word has length 98 [2020-10-27 14:18:04,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:18:04,947 INFO L481 AbstractCegarLoop]: Abstraction has 397 states and 576 transitions. [2020-10-27 14:18:04,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 14:18:04,948 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 576 transitions. [2020-10-27 14:18:04,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 14:18:04,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:18:04,949 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 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] [2020-10-27 14:18:04,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:18:04,950 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:18:04,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:18:04,950 INFO L82 PathProgramCache]: Analyzing trace with hash -234433363, now seen corresponding path program 24 times [2020-10-27 14:18:04,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:18:04,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674292889] [2020-10-27 14:18:04,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:18:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:04,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:04,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:05,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:09,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:09,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 14:18:09,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:18:09,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 14:18:09,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:18:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:18:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 14:18:09,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:10,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:18:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:10,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:10,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:10,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:18:10,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:10,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:18:10,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:10,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:18:10,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:10,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:18:10,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:18:10,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674292889] [2020-10-27 14:18:10,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:18:10,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 14:18:10,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285712616] [2020-10-27 14:18:10,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 14:18:10,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:18:10,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 14:18:10,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=580, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:18:10,890 INFO L87 Difference]: Start difference. First operand 397 states and 576 transitions. Second operand 32 states. [2020-10-27 14:18:20,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:18:20,257 INFO L93 Difference]: Finished difference Result 1867 states and 2724 transitions. [2020-10-27 14:18:20,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-10-27 14:18:20,258 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 101 [2020-10-27 14:18:20,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:18:20,267 INFO L225 Difference]: With dead ends: 1867 [2020-10-27 14:18:20,267 INFO L226 Difference]: Without dead ends: 1644 [2020-10-27 14:18:20,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1820 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2468, Invalid=5014, Unknown=0, NotChecked=0, Total=7482 [2020-10-27 14:18:20,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2020-10-27 14:18:20,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 409. [2020-10-27 14:18:20,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-10-27 14:18:20,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 594 transitions. [2020-10-27 14:18:20,363 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 594 transitions. Word has length 101 [2020-10-27 14:18:20,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:18:20,363 INFO L481 AbstractCegarLoop]: Abstraction has 409 states and 594 transitions. [2020-10-27 14:18:20,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 14:18:20,363 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 594 transitions. [2020-10-27 14:18:20,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 14:18:20,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:18:20,365 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 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] [2020-10-27 14:18:20,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 14:18:20,365 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:18:20,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:18:20,366 INFO L82 PathProgramCache]: Analyzing trace with hash -179257594, now seen corresponding path program 25 times [2020-10-27 14:18:20,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:18:20,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382271249] [2020-10-27 14:18:20,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:18:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:20,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:20,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:21,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:25,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:25,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 14:18:25,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:18:25,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 14:18:25,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:25,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:18:25,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:18:25,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 14:18:25,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:26,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:18:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:26,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:26,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:26,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:18:26,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:26,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:18:26,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:26,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:18:26,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:26,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:18:26,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:18:26,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382271249] [2020-10-27 14:18:26,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:18:26,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 14:18:26,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737370127] [2020-10-27 14:18:26,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 14:18:26,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:18:26,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 14:18:26,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=615, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:18:26,473 INFO L87 Difference]: Start difference. First operand 409 states and 594 transitions. Second operand 33 states. [2020-10-27 14:18:35,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:18:35,708 INFO L93 Difference]: Finished difference Result 1932 states and 2820 transitions. [2020-10-27 14:18:35,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-10-27 14:18:35,709 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 104 [2020-10-27 14:18:35,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:18:35,716 INFO L225 Difference]: With dead ends: 1932 [2020-10-27 14:18:35,716 INFO L226 Difference]: Without dead ends: 1703 [2020-10-27 14:18:35,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1958 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2643, Invalid=5367, Unknown=0, NotChecked=0, Total=8010 [2020-10-27 14:18:35,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-27 14:18:35,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 421. [2020-10-27 14:18:35,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-10-27 14:18:35,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 612 transitions. [2020-10-27 14:18:35,792 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 612 transitions. Word has length 104 [2020-10-27 14:18:35,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:18:35,792 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 612 transitions. [2020-10-27 14:18:35,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 14:18:35,792 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 612 transitions. [2020-10-27 14:18:35,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-27 14:18:35,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:18:35,793 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 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] [2020-10-27 14:18:35,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 14:18:35,794 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:18:35,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:18:35,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1410397683, now seen corresponding path program 26 times [2020-10-27 14:18:35,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:18:35,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179737961] [2020-10-27 14:18:35,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:18:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:35,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:35,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:36,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:40,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:40,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 14:18:40,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:18:40,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 14:18:40,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:40,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:18:40,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:18:40,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 14:18:40,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0