/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:32:40,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:32:40,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:32:40,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:32:40,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:32:40,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:32:40,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:32:40,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:32:40,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:32:40,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:32:40,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:32:40,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:32:40,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:32:40,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:32:40,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:32:40,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:32:40,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:32:40,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:32:40,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:32:40,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:32:40,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:32:40,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:32:40,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:32:40,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:32:40,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:32:40,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:32:40,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:32:40,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:32:40,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:32:40,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:32:40,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:32:40,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:32:40,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:32:40,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:32:40,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:32:40,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:32:40,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:32:40,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:32:40,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:32:40,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:32:40,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:32:40,481 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 13:32:40,510 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:32:40,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:32:40,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:32:40,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:32:40,512 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:32:40,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:32:40,513 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:32:40,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:32:40,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:32:40,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:32:40,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:32:40,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:32:40,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:32:40,515 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:32:40,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:32:40,515 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:32:40,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:32:40,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:32:40,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:32:40,516 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:32:40,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:32:40,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:32:40,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:32:40,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:32:40,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:32:40,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:32:40,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:32:40,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:32:40,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:32:40,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:32:40,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:32:40,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:32:40,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:32:40,906 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:32:40,907 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:32:40,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2020-10-29 13:32:40,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72f5de4a7/924186fd80f44f66861415941d8818a3/FLAG0e489a256 [2020-10-29 13:32:41,699 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:32:41,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2020-10-29 13:32:41,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72f5de4a7/924186fd80f44f66861415941d8818a3/FLAG0e489a256 [2020-10-29 13:32:42,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72f5de4a7/924186fd80f44f66861415941d8818a3 [2020-10-29 13:32:42,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:32:42,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:32:42,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:32:42,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:32:42,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:32:42,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:32:42" (1/1) ... [2020-10-29 13:32:42,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bb7af0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:42, skipping insertion in model container [2020-10-29 13:32:42,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:32:42" (1/1) ... [2020-10-29 13:32:42,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:32:42,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:32:42,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:32:42,408 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:32:42,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:32:42,551 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:32:42,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:42 WrapperNode [2020-10-29 13:32:42,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:32:42,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:32:42,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:32:42,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:32:42,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:42" (1/1) ... [2020-10-29 13:32:42,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:42" (1/1) ... [2020-10-29 13:32:42,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:42" (1/1) ... [2020-10-29 13:32:42,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:42" (1/1) ... [2020-10-29 13:32:42,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:42" (1/1) ... [2020-10-29 13:32:42,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:42" (1/1) ... [2020-10-29 13:32:42,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:42" (1/1) ... [2020-10-29 13:32:42,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:32:42,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:32:42,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:32:42,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:32:42,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:32:42,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:32:42,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:32:42,731 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:32:42,731 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:32:42,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:32:42,732 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:32:42,733 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:32:42,733 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:32:42,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:32:42,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:32:42,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:32:42,735 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:32:42,735 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:32:42,735 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:32:42,735 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:32:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:32:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:32:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:32:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:32:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:32:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-29 13:32:42,738 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-29 13:32:42,738 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:32:42,738 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:32:42,738 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:32:42,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:32:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:32:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:32:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:32:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:32:42,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:32:43,699 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:32:43,699 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:32:43,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:32:43 BoogieIcfgContainer [2020-10-29 13:32:43,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:32:43,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:32:43,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:32:43,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:32:43,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:32:42" (1/3) ... [2020-10-29 13:32:43,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e188372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:32:43, skipping insertion in model container [2020-10-29 13:32:43,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:42" (2/3) ... [2020-10-29 13:32:43,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e188372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:32:43, skipping insertion in model container [2020-10-29 13:32:43,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:32:43" (3/3) ... [2020-10-29 13:32:43,711 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2020-10-29 13:32:43,725 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:32:43,737 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:32:43,751 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:32:43,780 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:32:43,781 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:32:43,781 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:32:43,781 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:32:43,781 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:32:43,782 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:32:43,782 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:32:43,782 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:32:43,805 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states. [2020-10-29 13:32:43,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 13:32:43,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:43,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:32:43,818 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:43,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:43,825 INFO L82 PathProgramCache]: Analyzing trace with hash 247434898, now seen corresponding path program 1 times [2020-10-29 13:32:43,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:43,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230957592] [2020-10-29 13:32:43,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:44,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:44,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:44,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:44,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:45,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:46,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:46,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:49,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:49,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 13:32:49,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:32:49,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 13:32:49,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:49,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:49,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:32:49,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 13:32:49,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 13:32:49,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 13:32:49,929 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:32:49,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:49,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:49,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:49,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:49,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:49,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 13:32:49,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:49,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:49,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:32:49,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:49,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:32:49,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:32:50,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:32:50,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230957592] [2020-10-29 13:32:50,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:50,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:32:50,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807161370] [2020-10-29 13:32:50,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:32:50,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:50,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:32:50,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:32:50,106 INFO L87 Difference]: Start difference. First operand 145 states. Second operand 4 states. [2020-10-29 13:32:50,697 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 13:32:51,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:51,781 INFO L93 Difference]: Finished difference Result 307 states and 499 transitions. [2020-10-29 13:32:51,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:32:51,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-10-29 13:32:51,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:51,798 INFO L225 Difference]: With dead ends: 307 [2020-10-29 13:32:51,799 INFO L226 Difference]: Without dead ends: 211 [2020-10-29 13:32:51,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:32:51,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-29 13:32:51,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2020-10-29 13:32:51,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-29 13:32:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 297 transitions. [2020-10-29 13:32:51,879 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 297 transitions. Word has length 91 [2020-10-29 13:32:51,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:51,880 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 297 transitions. [2020-10-29 13:32:51,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:32:51,880 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 297 transitions. [2020-10-29 13:32:51,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 13:32:51,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:51,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:32:51,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:32:51,885 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:51,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:51,886 INFO L82 PathProgramCache]: Analyzing trace with hash 34204621, now seen corresponding path program 1 times [2020-10-29 13:32:51,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:51,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940905518] [2020-10-29 13:32:51,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:51,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:52,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:52,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:52,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:52,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:53,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:53,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:56,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:56,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 13:32:56,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:32:56,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 13:32:56,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:56,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:56,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:32:56,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:32:56,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 13:32:56,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:57,418 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:32:57,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:57,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:57,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:57,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:57,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:57,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 13:32:57,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:57,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:32:57,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:57,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:32:57,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:32:57,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:32:57,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940905518] [2020-10-29 13:32:57,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:57,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:32:57,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043554969] [2020-10-29 13:32:57,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:32:57,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:57,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:32:57,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:32:57,514 INFO L87 Difference]: Start difference. First operand 208 states and 297 transitions. Second operand 6 states. [2020-10-29 13:32:57,976 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 13:32:59,152 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:32:59,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:59,228 INFO L93 Difference]: Finished difference Result 509 states and 775 transitions. [2020-10-29 13:32:59,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:32:59,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-10-29 13:32:59,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:59,233 INFO L225 Difference]: With dead ends: 509 [2020-10-29 13:32:59,233 INFO L226 Difference]: Without dead ends: 358 [2020-10-29 13:32:59,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:32:59,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-29 13:32:59,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 355. [2020-10-29 13:32:59,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-10-29 13:32:59,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 532 transitions. [2020-10-29 13:32:59,284 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 532 transitions. Word has length 92 [2020-10-29 13:32:59,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:59,284 INFO L481 AbstractCegarLoop]: Abstraction has 355 states and 532 transitions. [2020-10-29 13:32:59,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:32:59,285 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 532 transitions. [2020-10-29 13:32:59,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 13:32:59,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:59,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:32:59,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:32:59,290 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:59,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:59,294 INFO L82 PathProgramCache]: Analyzing trace with hash 162289928, now seen corresponding path program 1 times [2020-10-29 13:32:59,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:59,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834529285] [2020-10-29 13:32:59,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:59,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:59,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:59,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:59,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:59,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:59,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:01,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:04,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:04,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 13:33:04,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:33:04,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 13:33:04,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:04,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:04,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 13:33:04,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:33:04,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 13:33:04,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:33:04,859 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:33:04,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:33:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:04,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:04,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:04,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:33:04,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:33:04,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:33:04,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:04,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:04,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:33:04,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:33:04,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:33:04,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:04,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:33:04,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834529285] [2020-10-29 13:33:04,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:33:04,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 13:33:04,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485268462] [2020-10-29 13:33:04,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 13:33:04,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:33:04,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 13:33:04,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:33:04,957 INFO L87 Difference]: Start difference. First operand 355 states and 532 transitions. Second operand 10 states. [2020-10-29 13:33:05,553 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-29 13:33:06,939 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-29 13:33:07,339 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 13:33:07,775 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 13:33:08,204 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 13:33:08,619 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 13:33:09,029 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:33:09,426 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 13:33:09,837 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:33:10,293 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 13:33:10,751 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 13:33:11,567 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:33:12,017 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 13:33:12,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:33:12,181 INFO L93 Difference]: Finished difference Result 4527 states and 7182 transitions. [2020-10-29 13:33:12,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 13:33:12,182 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-29 13:33:12,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:33:12,207 INFO L225 Difference]: With dead ends: 4527 [2020-10-29 13:33:12,208 INFO L226 Difference]: Without dead ends: 4229 [2020-10-29 13:33:12,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=322, Invalid=800, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 13:33:12,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4229 states. [2020-10-29 13:33:12,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4229 to 650. [2020-10-29 13:33:12,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2020-10-29 13:33:12,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 997 transitions. [2020-10-29 13:33:12,339 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 997 transitions. Word has length 92 [2020-10-29 13:33:12,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:33:12,340 INFO L481 AbstractCegarLoop]: Abstraction has 650 states and 997 transitions. [2020-10-29 13:33:12,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 13:33:12,340 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 997 transitions. [2020-10-29 13:33:12,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 13:33:12,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:33:12,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:33:12,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:33:12,348 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:33:12,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:33:12,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1900558869, now seen corresponding path program 1 times [2020-10-29 13:33:12,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:33:12,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057043943] [2020-10-29 13:33:12,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:33:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:12,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:12,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:12,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:12,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:12,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:12,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:13,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:13,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:17,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:17,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 13:33:17,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:33:17,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 13:33:17,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:17,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:17,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:33:17,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 13:33:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 13:33:17,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:17,809 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:33:17,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:33:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:17,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:17,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:17,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:33:17,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:33:17,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:33:17,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:17,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:17,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:33:17,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:33:17,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:33:17,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:33:17,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057043943] [2020-10-29 13:33:17,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:33:17,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:33:17,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329442126] [2020-10-29 13:33:17,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:33:17,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:33:17,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:33:17,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:33:17,873 INFO L87 Difference]: Start difference. First operand 650 states and 997 transitions. Second operand 4 states. [2020-10-29 13:33:18,263 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 13:33:19,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:33:19,098 INFO L93 Difference]: Finished difference Result 1772 states and 2773 transitions. [2020-10-29 13:33:19,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:33:19,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-10-29 13:33:19,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:33:19,106 INFO L225 Difference]: With dead ends: 1772 [2020-10-29 13:33:19,106 INFO L226 Difference]: Without dead ends: 1179 [2020-10-29 13:33:19,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:33:19,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2020-10-29 13:33:19,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1176. [2020-10-29 13:33:19,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1176 states. [2020-10-29 13:33:19,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1823 transitions. [2020-10-29 13:33:19,219 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1823 transitions. Word has length 94 [2020-10-29 13:33:19,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:33:19,220 INFO L481 AbstractCegarLoop]: Abstraction has 1176 states and 1823 transitions. [2020-10-29 13:33:19,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:33:19,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1823 transitions. [2020-10-29 13:33:19,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 13:33:19,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:33:19,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:33:19,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:33:19,222 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:33:19,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:33:19,223 INFO L82 PathProgramCache]: Analyzing trace with hash 675226775, now seen corresponding path program 1 times [2020-10-29 13:33:19,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:33:19,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623629865] [2020-10-29 13:33:19,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:33:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:19,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:19,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:19,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:19,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:19,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:19,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:19,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:23,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:24,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:24,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 13:33:24,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:33:24,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:33:24,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:24,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:24,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:33:24,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:33:24,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 13:33:24,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:24,819 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:33:24,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:33:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:24,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:24,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:24,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:33:24,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:33:24,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 13:33:24,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:24,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:33:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:33:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:33:24,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:24,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:33:24,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623629865] [2020-10-29 13:33:24,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:33:24,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:33:24,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93310777] [2020-10-29 13:33:24,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:33:24,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:33:24,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:33:24,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:33:24,945 INFO L87 Difference]: Start difference. First operand 1176 states and 1823 transitions. Second operand 7 states. [2020-10-29 13:33:25,404 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 13:33:26,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:33:26,532 INFO L93 Difference]: Finished difference Result 4137 states and 6461 transitions. [2020-10-29 13:33:26,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:33:26,533 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-29 13:33:26,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:33:26,551 INFO L225 Difference]: With dead ends: 4137 [2020-10-29 13:33:26,551 INFO L226 Difference]: Without dead ends: 3018 [2020-10-29 13:33:26,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 13:33:26,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2020-10-29 13:33:26,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 1181. [2020-10-29 13:33:26,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2020-10-29 13:33:26,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1830 transitions. [2020-10-29 13:33:26,702 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1830 transitions. Word has length 95 [2020-10-29 13:33:26,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:33:26,703 INFO L481 AbstractCegarLoop]: Abstraction has 1181 states and 1830 transitions. [2020-10-29 13:33:26,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:33:26,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1830 transitions. [2020-10-29 13:33:26,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 13:33:26,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:33:26,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:33:26,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:33:26,705 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:33:26,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:33:26,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1312052847, now seen corresponding path program 1 times [2020-10-29 13:33:26,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:33:26,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111002283] [2020-10-29 13:33:26,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:33:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:26,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:26,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:26,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:26,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:26,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:27,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:28,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:30,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:31,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:31,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 13:33:31,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:33:31,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:33:31,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:31,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:33:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:33:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 13:33:31,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:32,237 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:33:32,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:33:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:32,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:32,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:32,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:33:32,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:33:32,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 13:33:32,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:32,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:32,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:33:32,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:33:32,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:33:32,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:32,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:33:32,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111002283] [2020-10-29 13:33:32,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:33:32,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:33:32,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605816944] [2020-10-29 13:33:32,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:33:32,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:33:32,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:33:32,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:33:32,335 INFO L87 Difference]: Start difference. First operand 1181 states and 1830 transitions. Second operand 7 states. [2020-10-29 13:33:32,748 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-29 13:33:34,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:33:34,027 INFO L93 Difference]: Finished difference Result 3985 states and 6215 transitions. [2020-10-29 13:33:34,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:33:34,028 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-29 13:33:34,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:33:34,043 INFO L225 Difference]: With dead ends: 3985 [2020-10-29 13:33:34,044 INFO L226 Difference]: Without dead ends: 2866 [2020-10-29 13:33:34,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:33:34,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2020-10-29 13:33:34,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 1189. [2020-10-29 13:33:34,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1189 states. [2020-10-29 13:33:34,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1841 transitions. [2020-10-29 13:33:34,215 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1841 transitions. Word has length 95 [2020-10-29 13:33:34,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:33:34,215 INFO L481 AbstractCegarLoop]: Abstraction has 1189 states and 1841 transitions. [2020-10-29 13:33:34,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:33:34,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1841 transitions. [2020-10-29 13:33:34,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 13:33:34,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:33:34,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:33:34,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:33:34,217 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:33:34,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:33:34,218 INFO L82 PathProgramCache]: Analyzing trace with hash -436013301, now seen corresponding path program 1 times [2020-10-29 13:33:34,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:33:34,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81662909] [2020-10-29 13:33:34,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:33:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:34,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:34,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:34,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:34,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:34,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:34,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:35,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:37,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:39,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:39,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 13:33:39,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:33:39,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 13:33:39,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:39,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:33:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:33:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 13:33:39,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:39,666 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:33:39,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:33:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:39,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:39,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:39,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:33:39,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:33:39,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 13:33:39,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:39,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:39,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:33:39,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:33:39,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:33:39,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:39,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:33:39,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81662909] [2020-10-29 13:33:39,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:33:39,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:33:39,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89433013] [2020-10-29 13:33:39,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:33:39,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:33:39,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:33:39,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:33:39,756 INFO L87 Difference]: Start difference. First operand 1189 states and 1841 transitions. Second operand 7 states. [2020-10-29 13:33:40,152 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 13:33:41,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:33:41,402 INFO L93 Difference]: Finished difference Result 3833 states and 5970 transitions. [2020-10-29 13:33:41,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:33:41,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-29 13:33:41,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:33:41,416 INFO L225 Difference]: With dead ends: 3833 [2020-10-29 13:33:41,416 INFO L226 Difference]: Without dead ends: 2714 [2020-10-29 13:33:41,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:33:41,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2714 states. [2020-10-29 13:33:41,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2714 to 1197. [2020-10-29 13:33:41,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-10-29 13:33:41,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1852 transitions. [2020-10-29 13:33:41,583 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1852 transitions. Word has length 95 [2020-10-29 13:33:41,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:33:41,584 INFO L481 AbstractCegarLoop]: Abstraction has 1197 states and 1852 transitions. [2020-10-29 13:33:41,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:33:41,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1852 transitions. [2020-10-29 13:33:41,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 13:33:41,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:33:41,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:33:41,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:33:41,585 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:33:41,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:33:41,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1693377229, now seen corresponding path program 1 times [2020-10-29 13:33:41,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:33:41,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725368394] [2020-10-29 13:33:41,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:33:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:41,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:41,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:41,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:41,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:41,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:41,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:42,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:43,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:46,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:46,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 13:33:46,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:33:46,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 13:33:46,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:46,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:46,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:33:46,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:33:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 13:33:46,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:47,097 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:33:47,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:33:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:47,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:47,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:47,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:33:47,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:33:47,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:33:47,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:47,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:47,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:33:47,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:33:47,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:33:47,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:47,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:33:47,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725368394] [2020-10-29 13:33:47,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:33:47,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:33:47,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285322050] [2020-10-29 13:33:47,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:33:47,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:33:47,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:33:47,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:33:47,193 INFO L87 Difference]: Start difference. First operand 1197 states and 1852 transitions. Second operand 7 states. [2020-10-29 13:33:47,612 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-29 13:33:48,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:33:48,877 INFO L93 Difference]: Finished difference Result 3369 states and 5244 transitions. [2020-10-29 13:33:48,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:33:48,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-29 13:33:48,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:33:48,889 INFO L225 Difference]: With dead ends: 3369 [2020-10-29 13:33:48,890 INFO L226 Difference]: Without dead ends: 2250 [2020-10-29 13:33:48,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:33:48,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2020-10-29 13:33:49,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 1237. [2020-10-29 13:33:49,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1237 states. [2020-10-29 13:33:49,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1907 transitions. [2020-10-29 13:33:49,095 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1907 transitions. Word has length 95 [2020-10-29 13:33:49,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:33:49,095 INFO L481 AbstractCegarLoop]: Abstraction has 1237 states and 1907 transitions. [2020-10-29 13:33:49,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:33:49,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1907 transitions. [2020-10-29 13:33:49,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 13:33:49,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:33:49,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:33:49,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:33:49,097 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:33:49,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:33:49,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1923289847, now seen corresponding path program 1 times [2020-10-29 13:33:49,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:33:49,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392836082] [2020-10-29 13:33:49,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:33:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:49,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:49,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:49,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:49,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:49,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:50,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:50,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:50,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:53,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:53,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 13:33:53,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:33:53,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3991 [2020-10-29 13:33:53,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:53,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:53,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:33:53,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 13:33:53,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 13:33:53,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:53,561 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:33:53,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:33:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:53,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:53,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:53,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:33:53,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:33:53,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:33:53,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:53,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:33:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:33:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:33:53,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:53,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:33:53,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392836082] [2020-10-29 13:33:53,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:33:53,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:33:53,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369408672] [2020-10-29 13:33:53,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:33:53,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:33:53,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:33:53,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:33:53,621 INFO L87 Difference]: Start difference. First operand 1237 states and 1907 transitions. Second operand 5 states. [2020-10-29 13:33:54,039 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 13:33:55,135 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-29 13:33:55,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:33:55,900 INFO L93 Difference]: Finished difference Result 4533 states and 7083 transitions. [2020-10-29 13:33:55,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:33:55,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-29 13:33:55,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:33:55,917 INFO L225 Difference]: With dead ends: 4533 [2020-10-29 13:33:55,917 INFO L226 Difference]: Without dead ends: 3414 [2020-10-29 13:33:55,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:33:55,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2020-10-29 13:33:56,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 3408. [2020-10-29 13:33:56,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3408 states. [2020-10-29 13:33:56,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3408 states to 3408 states and 5265 transitions. [2020-10-29 13:33:56,392 INFO L78 Accepts]: Start accepts. Automaton has 3408 states and 5265 transitions. Word has length 95 [2020-10-29 13:33:56,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:33:56,392 INFO L481 AbstractCegarLoop]: Abstraction has 3408 states and 5265 transitions. [2020-10-29 13:33:56,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:33:56,392 INFO L276 IsEmpty]: Start isEmpty. Operand 3408 states and 5265 transitions. [2020-10-29 13:33:56,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 13:33:56,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:33:56,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:33:56,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:33:56,394 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:33:56,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:33:56,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1301760214, now seen corresponding path program 1 times [2020-10-29 13:33:56,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:33:56,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410195229] [2020-10-29 13:33:56,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:33:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:56,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:56,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:56,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:56,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:56,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:57,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:01,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:34:01,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 13:34:01,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:34:01,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:34:01,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:34:01,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:34:01,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 13:34:01,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:34:01,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 13:34:01,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:34:01,954 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:34:01,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:34:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:34:01,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:01,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:34:01,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:34:01,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:34:01,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:34:01,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:34:01,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:34:01,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:34:01,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:34:01,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:34:01,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:34:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:34:02,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410195229] [2020-10-29 13:34:02,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:34:02,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 13:34:02,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727014184] [2020-10-29 13:34:02,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 13:34:02,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:34:02,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 13:34:02,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:34:02,025 INFO L87 Difference]: Start difference. First operand 3408 states and 5265 transitions. Second operand 10 states. [2020-10-29 13:34:02,599 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 13:34:03,790 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 13:34:04,293 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:34:05,678 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:34:06,104 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:34:06,560 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:34:07,066 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:34:07,612 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-29 13:34:08,113 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 13:34:08,534 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:34:08,998 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:34:09,478 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 13:34:10,011 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-29 13:34:11,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:34:11,855 INFO L93 Difference]: Finished difference Result 25018 states and 38965 transitions. [2020-10-29 13:34:11,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 13:34:11,856 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 95 [2020-10-29 13:34:11,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:34:11,922 INFO L225 Difference]: With dead ends: 25018 [2020-10-29 13:34:11,922 INFO L226 Difference]: Without dead ends: 21779 [2020-10-29 13:34:11,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=322, Invalid=800, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 13:34:11,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21779 states. [2020-10-29 13:34:12,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21779 to 3408. [2020-10-29 13:34:12,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3408 states. [2020-10-29 13:34:12,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3408 states to 3408 states and 5241 transitions. [2020-10-29 13:34:12,710 INFO L78 Accepts]: Start accepts. Automaton has 3408 states and 5241 transitions. Word has length 95 [2020-10-29 13:34:12,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:34:12,711 INFO L481 AbstractCegarLoop]: Abstraction has 3408 states and 5241 transitions. [2020-10-29 13:34:12,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 13:34:12,711 INFO L276 IsEmpty]: Start isEmpty. Operand 3408 states and 5241 transitions. [2020-10-29 13:34:12,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 13:34:12,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:34:12,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:34:12,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:34:12,713 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:34:12,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:34:12,713 INFO L82 PathProgramCache]: Analyzing trace with hash 904369833, now seen corresponding path program 1 times [2020-10-29 13:34:12,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:34:12,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912584246] [2020-10-29 13:34:12,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:34:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:34:12,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:12,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:12,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:12,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:12,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:13,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:13,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:15,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:17,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:34:17,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 13:34:17,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:34:17,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:34:17,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:34:17,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:34:17,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:34:17,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:34:17,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 13:34:17,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:34:18,195 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:34:18,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:34:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:34:18,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:18,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:34:18,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:34:18,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:34:18,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:34:18,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:34:18,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:34:18,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:34:18,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:34:18,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:34:18,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:34:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:34:18,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912584246] [2020-10-29 13:34:18,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:34:18,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:34:18,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067760152] [2020-10-29 13:34:18,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:34:18,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:34:18,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:34:18,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:34:18,255 INFO L87 Difference]: Start difference. First operand 3408 states and 5241 transitions. Second operand 7 states. [2020-10-29 13:34:18,661 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-29 13:34:20,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:34:20,490 INFO L93 Difference]: Finished difference Result 10336 states and 15902 transitions. [2020-10-29 13:34:20,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:34:20,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-29 13:34:20,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:34:20,504 INFO L225 Difference]: With dead ends: 10336 [2020-10-29 13:34:20,505 INFO L226 Difference]: Without dead ends: 7053 [2020-10-29 13:34:20,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:34:20,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7053 states. [2020-10-29 13:34:21,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7053 to 3384. [2020-10-29 13:34:21,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3384 states. [2020-10-29 13:34:21,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3384 states to 3384 states and 5205 transitions. [2020-10-29 13:34:21,260 INFO L78 Accepts]: Start accepts. Automaton has 3384 states and 5205 transitions. Word has length 95 [2020-10-29 13:34:21,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:34:21,260 INFO L481 AbstractCegarLoop]: Abstraction has 3384 states and 5205 transitions. [2020-10-29 13:34:21,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:34:21,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3384 states and 5205 transitions. [2020-10-29 13:34:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 13:34:21,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:34:21,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:34:21,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:34:21,262 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:34:21,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:34:21,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1759291101, now seen corresponding path program 1 times [2020-10-29 13:34:21,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:34:21,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103609937] [2020-10-29 13:34:21,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:34:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:34:21,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:21,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:21,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:21,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:21,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:22,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:23,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:34:23,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 13:34:23,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:34:23,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2533 [2020-10-29 13:34:23,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:34:23,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:34:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:34:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 13:34:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 13:34:23,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:34:24,200 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:34:24,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:34:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:34:24,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:24,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:34:24,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:34:24,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:34:24,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:34:24,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:34:24,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:34:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:34:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:34:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:34:24,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:34:24,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:34:24,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103609937] [2020-10-29 13:34:24,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:34:24,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:34:24,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921813741] [2020-10-29 13:34:24,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:34:24,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:34:24,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:34:24,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:34:24,235 INFO L87 Difference]: Start difference. First operand 3384 states and 5205 transitions. Second operand 4 states. [2020-10-29 13:34:24,641 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 13:34:26,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:34:26,207 INFO L93 Difference]: Finished difference Result 9478 states and 14641 transitions. [2020-10-29 13:34:26,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:34:26,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2020-10-29 13:34:26,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:34:26,225 INFO L225 Difference]: With dead ends: 9478 [2020-10-29 13:34:26,225 INFO L226 Difference]: Without dead ends: 6237 [2020-10-29 13:34:26,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:34:26,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6237 states. [2020-10-29 13:34:27,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6237 to 6208. [2020-10-29 13:34:27,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6208 states. [2020-10-29 13:34:27,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6208 states to 6208 states and 9523 transitions. [2020-10-29 13:34:27,216 INFO L78 Accepts]: Start accepts. Automaton has 6208 states and 9523 transitions. Word has length 96 [2020-10-29 13:34:27,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:34:27,216 INFO L481 AbstractCegarLoop]: Abstraction has 6208 states and 9523 transitions. [2020-10-29 13:34:27,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:34:27,216 INFO L276 IsEmpty]: Start isEmpty. Operand 6208 states and 9523 transitions. [2020-10-29 13:34:27,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 13:34:27,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:34:27,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:34:27,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:34:27,218 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:34:27,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:34:27,218 INFO L82 PathProgramCache]: Analyzing trace with hash -204097069, now seen corresponding path program 1 times [2020-10-29 13:34:27,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:34:27,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948138085] [2020-10-29 13:34:27,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:34:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:34:27,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:27,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:27,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:27,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:27,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:28,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:31,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:34:31,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 13:34:31,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:34:31,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4693 [2020-10-29 13:34:31,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:34:31,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:34:31,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:34:31,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:34:31,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 13:34:31,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:34:32,334 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:34:32,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:34:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:34:32,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:32,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:34:32,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:34:32,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:34:32,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:34:32,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:34:32,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:34:32,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:34:32,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:34:32,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:34:32,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:34:32,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:34:32,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948138085] [2020-10-29 13:34:32,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:34:32,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:34:32,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224491378] [2020-10-29 13:34:32,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:34:32,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:34:32,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:34:32,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:34:32,394 INFO L87 Difference]: Start difference. First operand 6208 states and 9523 transitions. Second operand 6 states. [2020-10-29 13:34:32,786 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:34:34,017 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-29 13:34:35,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:34:35,624 INFO L93 Difference]: Finished difference Result 18342 states and 28199 transitions. [2020-10-29 13:34:35,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:34:35,625 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-29 13:34:35,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:34:35,643 INFO L225 Difference]: With dead ends: 18342 [2020-10-29 13:34:35,644 INFO L226 Difference]: Without dead ends: 12251 [2020-10-29 13:34:35,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:34:35,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12251 states. [2020-10-29 13:34:37,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12251 to 12248. [2020-10-29 13:34:37,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12248 states. [2020-10-29 13:34:37,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12248 states to 12248 states and 18763 transitions. [2020-10-29 13:34:37,413 INFO L78 Accepts]: Start accepts. Automaton has 12248 states and 18763 transitions. Word has length 97 [2020-10-29 13:34:37,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:34:37,413 INFO L481 AbstractCegarLoop]: Abstraction has 12248 states and 18763 transitions. [2020-10-29 13:34:37,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:34:37,413 INFO L276 IsEmpty]: Start isEmpty. Operand 12248 states and 18763 transitions. [2020-10-29 13:34:37,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 13:34:37,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:34:37,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:34:37,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:34:37,420 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:34:37,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:34:37,420 INFO L82 PathProgramCache]: Analyzing trace with hash 567766584, now seen corresponding path program 1 times [2020-10-29 13:34:37,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:34:37,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958074564] [2020-10-29 13:34:37,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:34:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:34:37,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:37,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:37,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:37,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:37,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:38,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:34:38,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 13:34:38,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:34:38,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1508 [2020-10-29 13:34:38,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:34:38,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:34:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:34:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 13:34:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 13:34:38,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:34:39,344 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:34:39,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:34:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:34:39,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:39,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:34:39,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:34:39,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:34:39,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:34:39,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:34:39,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:34:39,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:34:39,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:34:39,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:34:39,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:34:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:34:39,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958074564] [2020-10-29 13:34:39,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:34:39,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:34:39,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989572889] [2020-10-29 13:34:39,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:34:39,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:34:39,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:34:39,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:34:39,377 INFO L87 Difference]: Start difference. First operand 12248 states and 18763 transitions. Second operand 4 states. [2020-10-29 13:34:39,795 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 13:34:43,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:34:43,374 INFO L93 Difference]: Finished difference Result 27550 states and 42255 transitions. [2020-10-29 13:34:43,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:34:43,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-10-29 13:34:43,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:34:43,406 INFO L225 Difference]: With dead ends: 27550 [2020-10-29 13:34:43,406 INFO L226 Difference]: Without dead ends: 19486 [2020-10-29 13:34:43,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:34:43,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19486 states. [2020-10-29 13:34:46,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19486 to 19483. [2020-10-29 13:34:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19483 states. [2020-10-29 13:34:46,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19483 states to 19483 states and 29732 transitions. [2020-10-29 13:34:46,321 INFO L78 Accepts]: Start accepts. Automaton has 19483 states and 29732 transitions. Word has length 97 [2020-10-29 13:34:46,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:34:46,321 INFO L481 AbstractCegarLoop]: Abstraction has 19483 states and 29732 transitions. [2020-10-29 13:34:46,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:34:46,321 INFO L276 IsEmpty]: Start isEmpty. Operand 19483 states and 29732 transitions. [2020-10-29 13:34:46,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 13:34:46,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:34:46,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:34:46,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 13:34:46,322 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:34:46,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:34:46,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1213637065, now seen corresponding path program 1 times [2020-10-29 13:34:46,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:34:46,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433723080] [2020-10-29 13:34:46,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:34:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:34:46,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:46,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:46,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:46,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:47,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:34:47,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 13:34:47,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 13:34:47,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 763 [2020-10-29 13:34:47,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:34:47,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:34:47,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:34:47,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 13:34:47,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 13:34:47,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:34:47,493 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:34:47,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:34:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:34:47,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:47,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:34:47,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:34:47,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:34:47,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:34:47,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:34:47,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:34:47,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:34:47,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:34:47,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:34:47,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:34:47,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:34:47,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433723080] [2020-10-29 13:34:47,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:34:47,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:34:47,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662406011] [2020-10-29 13:34:47,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:34:47,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:34:47,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:34:47,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:34:47,545 INFO L87 Difference]: Start difference. First operand 19483 states and 29732 transitions. Second operand 4 states. [2020-10-29 13:34:47,952 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 13:34:54,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:34:54,010 INFO L93 Difference]: Finished difference Result 55713 states and 84840 transitions. [2020-10-29 13:34:54,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:34:54,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-29 13:34:54,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:34:54,058 INFO L225 Difference]: With dead ends: 55713 [2020-10-29 13:34:54,058 INFO L226 Difference]: Without dead ends: 36317 [2020-10-29 13:34:54,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:34:54,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36317 states. [2020-10-29 13:34:59,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36317 to 36301. [2020-10-29 13:34:59,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36301 states. [2020-10-29 13:34:59,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36301 states to 36301 states and 54866 transitions. [2020-10-29 13:34:59,970 INFO L78 Accepts]: Start accepts. Automaton has 36301 states and 54866 transitions. Word has length 98 [2020-10-29 13:34:59,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:34:59,970 INFO L481 AbstractCegarLoop]: Abstraction has 36301 states and 54866 transitions. [2020-10-29 13:34:59,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:34:59,971 INFO L276 IsEmpty]: Start isEmpty. Operand 36301 states and 54866 transitions. [2020-10-29 13:34:59,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 13:34:59,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:34:59,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:34:59,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 13:34:59,972 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:34:59,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:34:59,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1314573223, now seen corresponding path program 1 times [2020-10-29 13:34:59,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:34:59,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540263889] [2020-10-29 13:34:59,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:34:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:35:00,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:00,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:00,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:00,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:01,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:35:01,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 13:35:01,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 13:35:01,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1421 [2020-10-29 13:35:01,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:35:01,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:35:01,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:35:01,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:35:01,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 13:35:01,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:35:01,826 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:35:01,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:35:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:35:01,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:01,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:35:01,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:35:01,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:35:01,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 13:35:01,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:35:01,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:35:01,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:35:01,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:35:01,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:35:01,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:35:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:35:01,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540263889] [2020-10-29 13:35:01,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:35:01,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:35:01,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459597547] [2020-10-29 13:35:01,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:35:01,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:35:01,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:35:01,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:35:01,878 INFO L87 Difference]: Start difference. First operand 36301 states and 54866 transitions. Second operand 6 states. [2020-10-29 13:35:02,314 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:35:08,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:35:08,229 INFO L93 Difference]: Finished difference Result 72528 states and 109652 transitions. [2020-10-29 13:35:08,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:35:08,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-29 13:35:08,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:35:08,271 INFO L225 Difference]: With dead ends: 72528 [2020-10-29 13:35:08,272 INFO L226 Difference]: Without dead ends: 36301 [2020-10-29 13:35:08,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:35:08,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36301 states. [2020-10-29 13:35:14,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36301 to 36301. [2020-10-29 13:35:14,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36301 states. [2020-10-29 13:35:14,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36301 states to 36301 states and 54546 transitions. [2020-10-29 13:35:14,437 INFO L78 Accepts]: Start accepts. Automaton has 36301 states and 54546 transitions. Word has length 99 [2020-10-29 13:35:14,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:35:14,438 INFO L481 AbstractCegarLoop]: Abstraction has 36301 states and 54546 transitions. [2020-10-29 13:35:14,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:35:14,438 INFO L276 IsEmpty]: Start isEmpty. Operand 36301 states and 54546 transitions. [2020-10-29 13:35:14,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 13:35:14,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:35:14,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:35:14,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 13:35:14,440 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:35:14,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:35:14,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1638896002, now seen corresponding path program 1 times [2020-10-29 13:35:14,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:35:14,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934974212] [2020-10-29 13:35:14,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:35:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:35:14,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:14,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:14,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:15,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:35:15,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 13:35:15,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:35:15,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-10-29 13:35:15,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:35:15,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:35:15,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:35:15,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 13:35:15,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 13:35:15,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:35:15,439 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:35:15,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:35:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:35:15,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:15,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:35:15,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:35:15,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:35:15,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:35:15,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:35:15,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:35:15,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:35:15,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:35:15,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:35:15,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:35:15,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:35:15,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934974212] [2020-10-29 13:35:15,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:35:15,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:35:15,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551373933] [2020-10-29 13:35:15,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:35:15,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:35:15,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:35:15,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:35:15,484 INFO L87 Difference]: Start difference. First operand 36301 states and 54546 transitions. Second operand 4 states. [2020-10-29 13:35:15,917 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 13:35:27,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:35:27,088 INFO L93 Difference]: Finished difference Result 103635 states and 155158 transitions. [2020-10-29 13:35:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:35:27,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-29 13:35:27,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:35:27,168 INFO L225 Difference]: With dead ends: 103635 [2020-10-29 13:35:27,168 INFO L226 Difference]: Without dead ends: 67407 [2020-10-29 13:35:27,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:35:27,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67407 states. [2020-10-29 13:35:38,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67407 to 67397. [2020-10-29 13:35:38,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67397 states. [2020-10-29 13:35:38,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67397 states to 67397 states and 100039 transitions. [2020-10-29 13:35:38,148 INFO L78 Accepts]: Start accepts. Automaton has 67397 states and 100039 transitions. Word has length 99 [2020-10-29 13:35:38,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:35:38,149 INFO L481 AbstractCegarLoop]: Abstraction has 67397 states and 100039 transitions. [2020-10-29 13:35:38,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:35:38,149 INFO L276 IsEmpty]: Start isEmpty. Operand 67397 states and 100039 transitions. [2020-10-29 13:35:38,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 13:35:38,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:35:38,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:35:38,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 13:35:38,150 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:35:38,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:35:38,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1532426576, now seen corresponding path program 1 times [2020-10-29 13:35:38,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:35:38,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243209722] [2020-10-29 13:35:38,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:35:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:35:38,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:38,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:38,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:39,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:35:39,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 13:35:39,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:35:39,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 863 [2020-10-29 13:35:39,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:35:39,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:35:39,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:35:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 13:35:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 13:35:39,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:35:39,406 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:35:39,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:35:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:35:39,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:39,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:35:39,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:35:39,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:35:39,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:35:39,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:35:39,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:35:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:35:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:35:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:35:39,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:35:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:35:39,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243209722] [2020-10-29 13:35:39,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:35:39,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:35:39,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981807736] [2020-10-29 13:35:39,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:35:39,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:35:39,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:35:39,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:35:39,439 INFO L87 Difference]: Start difference. First operand 67397 states and 100039 transitions. Second operand 4 states. [2020-10-29 13:35:39,845 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 13:35:59,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:35:59,826 INFO L93 Difference]: Finished difference Result 191819 states and 283339 transitions. [2020-10-29 13:35:59,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:35:59,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-29 13:35:59,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:36:00,001 INFO L225 Difference]: With dead ends: 191819 [2020-10-29 13:36:00,001 INFO L226 Difference]: Without dead ends: 124487 [2020-10-29 13:36:00,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:36:00,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124487 states. [2020-10-29 13:36:20,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124487 to 124478. [2020-10-29 13:36:20,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124478 states. [2020-10-29 13:36:20,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124478 states to 124478 states and 182077 transitions. [2020-10-29 13:36:20,916 INFO L78 Accepts]: Start accepts. Automaton has 124478 states and 182077 transitions. Word has length 100 [2020-10-29 13:36:20,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:36:20,916 INFO L481 AbstractCegarLoop]: Abstraction has 124478 states and 182077 transitions. [2020-10-29 13:36:20,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:36:20,916 INFO L276 IsEmpty]: Start isEmpty. Operand 124478 states and 182077 transitions. [2020-10-29 13:36:20,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 13:36:20,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:36:20,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:36:20,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 13:36:20,917 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:36:20,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:36:20,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1459802247, now seen corresponding path program 1 times [2020-10-29 13:36:20,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:36:20,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040796910] [2020-10-29 13:36:20,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:36:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:36:20,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:21,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:21,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:21,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:23,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:36:23,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 13:36:23,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 13:36:23,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2238 [2020-10-29 13:36:23,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:36:23,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:36:23,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:36:23,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:36:23,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 13:36:23,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0