/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_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:59:07,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:59:07,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:59:07,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:59:07,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:59:07,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:59:07,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:59:07,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:59:07,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:59:07,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:59:07,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:59:07,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:59:07,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:59:07,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:59:07,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:59:07,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:59:07,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:59:07,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:59:07,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:59:07,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:59:07,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:59:07,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:59:07,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:59:07,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:59:07,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:59:07,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:59:07,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:59:07,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:59:07,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:59:07,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:59:07,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:59:07,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:59:07,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:59:07,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:59:07,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:59:07,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:59:07,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:59:07,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:59:07,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:59:07,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:59:07,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:59:07,436 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 13:59:07,499 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:59:07,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:59:07,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:59:07,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:59:07,505 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:59:07,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:59:07,505 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:59:07,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:59:07,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:59:07,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:59:07,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:59:07,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:59:07,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:59:07,508 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:59:07,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:59:07,509 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:59:07,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:59:07,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:59:07,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:59:07,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:59:07,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:59:07,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:59:07,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:59:07,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:59:07,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:59:07,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:59:07,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:59:07,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:59:07,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:59:07,513 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:59:07,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:59:07,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:59:07,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:59:07,975 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:59:07,976 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:59:07,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-29 13:59:08,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/360521c82/2ae3d6e44aaa4942af1fa50380377708/FLAG48b981f88 [2020-10-29 13:59:08,849 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:59:08,850 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-29 13:59:08,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/360521c82/2ae3d6e44aaa4942af1fa50380377708/FLAG48b981f88 [2020-10-29 13:59:09,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/360521c82/2ae3d6e44aaa4942af1fa50380377708 [2020-10-29 13:59:09,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:59:09,102 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:59:09,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:59:09,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:59:09,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:59:09,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:59:09" (1/1) ... [2020-10-29 13:59:09,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc7cbed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:09, skipping insertion in model container [2020-10-29 13:59:09,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:59:09" (1/1) ... [2020-10-29 13:59:09,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:59:09,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:59:09,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:59:09,755 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:59:10,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:59:10,042 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:59:10,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:10 WrapperNode [2020-10-29 13:59:10,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:59:10,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:59:10,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:59:10,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:59:10,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:10" (1/1) ... [2020-10-29 13:59:10,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:10" (1/1) ... [2020-10-29 13:59:10,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:10" (1/1) ... [2020-10-29 13:59:10,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:10" (1/1) ... [2020-10-29 13:59:10,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:10" (1/1) ... [2020-10-29 13:59:10,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:10" (1/1) ... [2020-10-29 13:59:10,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:10" (1/1) ... [2020-10-29 13:59:10,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:59:10,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:59:10,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:59:10,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:59:10,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:59:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:59:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:59:10,292 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:59:10,292 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:59:10,293 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:59:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:59:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:59:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:59:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:59:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:59:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:59:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:59:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:59:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:59:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:59:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:59:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:59:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:59:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:59:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:59:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:59:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:59:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:59:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:59:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:59:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:59:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:59:11,818 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:59:11,819 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:59:11,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:59:11 BoogieIcfgContainer [2020-10-29 13:59:11,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:59:11,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:59:11,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:59:11,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:59:11,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:59:09" (1/3) ... [2020-10-29 13:59:11,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616a39fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:59:11, skipping insertion in model container [2020-10-29 13:59:11,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:10" (2/3) ... [2020-10-29 13:59:11,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616a39fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:59:11, skipping insertion in model container [2020-10-29 13:59:11,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:59:11" (3/3) ... [2020-10-29 13:59:11,833 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-29 13:59:11,868 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:59:11,875 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:59:11,890 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:59:11,945 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:59:11,946 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:59:11,946 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:59:11,946 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:59:11,946 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:59:11,946 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:59:11,946 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:59:11,947 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:59:11,987 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states. [2020-10-29 13:59:12,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-29 13:59:12,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:12,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:12,007 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:12,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:12,014 INFO L82 PathProgramCache]: Analyzing trace with hash -796746938, now seen corresponding path program 1 times [2020-10-29 13:59:12,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:12,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086467341] [2020-10-29 13:59:12,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:12,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:13,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:13,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:13,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:13,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:14,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:14,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:14,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:14,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:14,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:16,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:16,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:16,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:17,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:17,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 13:59:17,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:59:17,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 13:59:17,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:17,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:17,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:59:17,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 13:59:17,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 13:59:17,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:59:18,151 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:59:18,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:18,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:18,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:18,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:18,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:18,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:59:18,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:18,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:18,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:18,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:18,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:18,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:59:18,280 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 13:59:18,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086467341] [2020-10-29 13:59:18,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:18,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:59:18,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334483755] [2020-10-29 13:59:18,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:59:18,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:18,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:59:18,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:59:18,321 INFO L87 Difference]: Start difference. First operand 346 states. Second operand 4 states. [2020-10-29 13:59:18,921 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 13:59:21,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:21,131 INFO L93 Difference]: Finished difference Result 693 states and 1200 transitions. [2020-10-29 13:59:21,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:59:21,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-10-29 13:59:21,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:21,167 INFO L225 Difference]: With dead ends: 693 [2020-10-29 13:59:21,167 INFO L226 Difference]: Without dead ends: 556 [2020-10-29 13:59:21,178 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 13:59:21,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-10-29 13:59:21,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 553. [2020-10-29 13:59:21,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-10-29 13:59:21,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 826 transitions. [2020-10-29 13:59:21,301 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 826 transitions. Word has length 158 [2020-10-29 13:59:21,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:21,302 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 826 transitions. [2020-10-29 13:59:21,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:59:21,302 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 826 transitions. [2020-10-29 13:59:21,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-29 13:59:21,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:21,309 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:21,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:59:21,309 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:21,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:21,310 INFO L82 PathProgramCache]: Analyzing trace with hash -113561026, now seen corresponding path program 1 times [2020-10-29 13:59:21,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:21,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112185545] [2020-10-29 13:59:21,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:21,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:21,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:21,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:21,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:22,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:22,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:22,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:22,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:22,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:24,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:24,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:24,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:24,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:26,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:26,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 13:59:26,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:59:26,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 13:59:26,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:26,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:26,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:26,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:26,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 13:59:26,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:59:26,965 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:59:26,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:26,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:27,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:27,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:27,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:27,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:59:27,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:27,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:27,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:27,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:27,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:27,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:59:27,105 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 13:59:27,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112185545] [2020-10-29 13:59:27,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:27,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:27,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840756782] [2020-10-29 13:59:27,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:27,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:27,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:27,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:27,124 INFO L87 Difference]: Start difference. First operand 553 states and 826 transitions. Second operand 5 states. [2020-10-29 13:59:29,253 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:59:30,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:30,342 INFO L93 Difference]: Finished difference Result 1595 states and 2375 transitions. [2020-10-29 13:59:30,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:30,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-29 13:59:30,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:30,355 INFO L225 Difference]: With dead ends: 1595 [2020-10-29 13:59:30,355 INFO L226 Difference]: Without dead ends: 1059 [2020-10-29 13:59:30,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:30,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2020-10-29 13:59:30,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1056. [2020-10-29 13:59:30,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2020-10-29 13:59:30,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1560 transitions. [2020-10-29 13:59:30,428 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1560 transitions. Word has length 158 [2020-10-29 13:59:30,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:30,428 INFO L481 AbstractCegarLoop]: Abstraction has 1056 states and 1560 transitions. [2020-10-29 13:59:30,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:30,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1560 transitions. [2020-10-29 13:59:30,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-29 13:59:30,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:30,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:30,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:59:30,436 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:30,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:30,437 INFO L82 PathProgramCache]: Analyzing trace with hash 2090756356, now seen corresponding path program 1 times [2020-10-29 13:59:30,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:30,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333406285] [2020-10-29 13:59:30,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:30,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:30,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:30,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:30,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:30,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:31,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:31,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:31,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:31,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:32,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:33,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:33,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:33,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:34,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:35,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:35,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 13:59:35,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:59:35,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 13:59:35,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:35,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:35,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 13:59:35,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:36,085 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:59:36,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:36,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:36,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:36,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:36,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:36,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 13:59:36,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:36,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:36,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:36,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:36,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:36,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:59:36,250 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 13:59:36,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333406285] [2020-10-29 13:59:36,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:36,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:36,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097477536] [2020-10-29 13:59:36,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:36,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:36,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:36,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:36,261 INFO L87 Difference]: Start difference. First operand 1056 states and 1560 transitions. Second operand 5 states. [2020-10-29 13:59:38,344 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:59:39,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:39,403 INFO L93 Difference]: Finished difference Result 3081 states and 4541 transitions. [2020-10-29 13:59:39,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:39,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-29 13:59:39,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:39,417 INFO L225 Difference]: With dead ends: 3081 [2020-10-29 13:59:39,418 INFO L226 Difference]: Without dead ends: 2036 [2020-10-29 13:59:39,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:39,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2020-10-29 13:59:39,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 2033. [2020-10-29 13:59:39,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2033 states. [2020-10-29 13:59:39,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 2970 transitions. [2020-10-29 13:59:39,540 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 2970 transitions. Word has length 159 [2020-10-29 13:59:39,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:39,541 INFO L481 AbstractCegarLoop]: Abstraction has 2033 states and 2970 transitions. [2020-10-29 13:59:39,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:39,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 2970 transitions. [2020-10-29 13:59:39,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 13:59:39,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:39,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:39,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:59:39,547 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:39,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:39,547 INFO L82 PathProgramCache]: Analyzing trace with hash 389222784, now seen corresponding path program 1 times [2020-10-29 13:59:39,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:39,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863616447] [2020-10-29 13:59:39,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:39,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:39,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:39,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:39,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:39,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:39,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:40,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:40,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:40,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:44,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:44,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 13:59:44,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:59:44,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 13:59:44,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:44,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:44,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 13:59:44,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 13:59:45,189 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:59:45,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:45,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:45,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:45,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:45,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:45,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:59:45,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:45,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:45,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:45,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:45,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:45,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:45,326 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 13:59:45,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863616447] [2020-10-29 13:59:45,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:45,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:45,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80124706] [2020-10-29 13:59:45,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:45,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:45,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:45,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:45,330 INFO L87 Difference]: Start difference. First operand 2033 states and 2970 transitions. Second operand 5 states. [2020-10-29 13:59:47,726 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:59:48,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:48,927 INFO L93 Difference]: Finished difference Result 5887 states and 8566 transitions. [2020-10-29 13:59:48,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:48,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-29 13:59:48,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:48,949 INFO L225 Difference]: With dead ends: 5887 [2020-10-29 13:59:48,949 INFO L226 Difference]: Without dead ends: 3908 [2020-10-29 13:59:48,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:48,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3908 states. [2020-10-29 13:59:49,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3908 to 3905. [2020-10-29 13:59:49,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3905 states. [2020-10-29 13:59:49,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3905 states to 3905 states and 5634 transitions. [2020-10-29 13:59:49,191 INFO L78 Accepts]: Start accepts. Automaton has 3905 states and 5634 transitions. Word has length 160 [2020-10-29 13:59:49,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:49,192 INFO L481 AbstractCegarLoop]: Abstraction has 3905 states and 5634 transitions. [2020-10-29 13:59:49,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:49,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3905 states and 5634 transitions. [2020-10-29 13:59:49,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-29 13:59:49,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:49,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:49,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:59:49,202 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:49,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:49,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1018255517, now seen corresponding path program 1 times [2020-10-29 13:59:49,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:49,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206812683] [2020-10-29 13:59:49,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:49,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:49,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:49,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:49,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:49,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:49,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:49,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:49,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:50,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:51,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:54,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:54,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 13:59:54,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:59:54,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 13:59:54,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:54,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 13:59:54,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:54,792 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:59:54,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:54,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:54,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:54,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:54,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:54,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:59:54,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:54,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:54,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:54,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:54,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:54,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:54,900 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 13:59:54,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206812683] [2020-10-29 13:59:54,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:54,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:54,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993560512] [2020-10-29 13:59:54,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:54,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:54,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:54,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:54,903 INFO L87 Difference]: Start difference. First operand 3905 states and 5634 transitions. Second operand 5 states. [2020-10-29 13:59:57,770 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:59:59,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:59,037 INFO L93 Difference]: Finished difference Result 11340 states and 16288 transitions. [2020-10-29 13:59:59,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:59,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-29 13:59:59,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:59,078 INFO L225 Difference]: With dead ends: 11340 [2020-10-29 13:59:59,078 INFO L226 Difference]: Without dead ends: 7545 [2020-10-29 13:59:59,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:59,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7545 states. [2020-10-29 13:59:59,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7545 to 7542. [2020-10-29 13:59:59,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7542 states. [2020-10-29 13:59:59,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7542 states to 7542 states and 10732 transitions. [2020-10-29 13:59:59,645 INFO L78 Accepts]: Start accepts. Automaton has 7542 states and 10732 transitions. Word has length 161 [2020-10-29 13:59:59,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:59,645 INFO L481 AbstractCegarLoop]: Abstraction has 7542 states and 10732 transitions. [2020-10-29 13:59:59,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:59,645 INFO L276 IsEmpty]: Start isEmpty. Operand 7542 states and 10732 transitions. [2020-10-29 13:59:59,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-29 13:59:59,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:59,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:59,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:59:59,662 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:59,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:59,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1694963328, now seen corresponding path program 1 times [2020-10-29 13:59:59,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:59,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207599864] [2020-10-29 13:59:59,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:59,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:59,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:59,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:00,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:00,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:00,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:03,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:03,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:04,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:04,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-29 14:00:04,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:00:04,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 14:00:04,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:04,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:04,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:04,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:04,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 14:00:04,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:05,163 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:00:05,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:05,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:05,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:05,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:05,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:05,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:00:05,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:05,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:05,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:05,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:05,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:05,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:05,258 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 14:00:05,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207599864] [2020-10-29 14:00:05,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:05,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:05,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737755150] [2020-10-29 14:00:05,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:05,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:05,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:05,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:05,262 INFO L87 Difference]: Start difference. First operand 7542 states and 10732 transitions. Second operand 5 states. [2020-10-29 14:00:07,847 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 14:00:09,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:09,076 INFO L93 Difference]: Finished difference Result 21823 states and 30878 transitions. [2020-10-29 14:00:09,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:00:09,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-29 14:00:09,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:09,144 INFO L225 Difference]: With dead ends: 21823 [2020-10-29 14:00:09,144 INFO L226 Difference]: Without dead ends: 14444 [2020-10-29 14:00:09,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:00:09,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14444 states. [2020-10-29 14:00:10,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14444 to 14441. [2020-10-29 14:00:10,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14441 states. [2020-10-29 14:00:10,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14441 states to 14441 states and 20202 transitions. [2020-10-29 14:00:10,235 INFO L78 Accepts]: Start accepts. Automaton has 14441 states and 20202 transitions. Word has length 162 [2020-10-29 14:00:10,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:10,236 INFO L481 AbstractCegarLoop]: Abstraction has 14441 states and 20202 transitions. [2020-10-29 14:00:10,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:10,236 INFO L276 IsEmpty]: Start isEmpty. Operand 14441 states and 20202 transitions. [2020-10-29 14:00:10,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-29 14:00:10,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:10,262 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:10,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:00:10,263 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:10,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:10,263 INFO L82 PathProgramCache]: Analyzing trace with hash 627337668, now seen corresponding path program 1 times [2020-10-29 14:00:10,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:10,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269914197] [2020-10-29 14:00:10,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:10,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:10,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:10,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:10,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:10,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:10,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:13,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:13,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:15,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:15,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-29 14:00:15,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:00:15,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 14:00:15,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:15,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:15,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:15,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:15,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 14:00:15,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:15,783 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:00:15,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:15,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:15,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:15,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:15,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:15,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 14:00:15,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:15,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:15,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:15,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:15,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:15,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:15,937 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 14:00:15,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269914197] [2020-10-29 14:00:15,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:15,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:15,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900753062] [2020-10-29 14:00:15,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:15,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:15,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:15,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:15,939 INFO L87 Difference]: Start difference. First operand 14441 states and 20202 transitions. Second operand 5 states. [2020-10-29 14:00:19,113 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 14:00:20,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:20,716 INFO L93 Difference]: Finished difference Result 37376 states and 52284 transitions. [2020-10-29 14:00:20,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:00:20,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-29 14:00:20,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:20,772 INFO L225 Difference]: With dead ends: 37376 [2020-10-29 14:00:20,772 INFO L226 Difference]: Without dead ends: 25149 [2020-10-29 14:00:20,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:00:20,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25149 states. [2020-10-29 14:00:22,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25149 to 25146. [2020-10-29 14:00:22,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25146 states. [2020-10-29 14:00:22,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25146 states to 25146 states and 34472 transitions. [2020-10-29 14:00:22,616 INFO L78 Accepts]: Start accepts. Automaton has 25146 states and 34472 transitions. Word has length 163 [2020-10-29 14:00:22,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:22,616 INFO L481 AbstractCegarLoop]: Abstraction has 25146 states and 34472 transitions. [2020-10-29 14:00:22,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:22,616 INFO L276 IsEmpty]: Start isEmpty. Operand 25146 states and 34472 transitions. [2020-10-29 14:00:22,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-29 14:00:22,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:22,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:22,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:00:22,659 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:22,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:22,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1668816865, now seen corresponding path program 1 times [2020-10-29 14:00:22,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:22,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380135880] [2020-10-29 14:00:22,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:22,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:22,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:23,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:23,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:23,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:23,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:27,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:27,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 14:00:27,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:00:27,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 14:00:27,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:27,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:27,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:00:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 14:00:27,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:28,164 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:00:28,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:28,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:28,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:28,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:28,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:28,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 14:00:28,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:28,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:28,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:28,218 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 14:00:28,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380135880] [2020-10-29 14:00:28,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:28,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:28,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359011572] [2020-10-29 14:00:28,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:28,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:28,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:28,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:28,221 INFO L87 Difference]: Start difference. First operand 25146 states and 34472 transitions. Second operand 5 states. [2020-10-29 14:00:30,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:30,815 INFO L93 Difference]: Finished difference Result 40981 states and 56254 transitions. [2020-10-29 14:00:30,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:00:30,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-29 14:00:30,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:30,852 INFO L225 Difference]: With dead ends: 40981 [2020-10-29 14:00:30,852 INFO L226 Difference]: Without dead ends: 16269 [2020-10-29 14:00:30,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:00:30,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16269 states. [2020-10-29 14:00:32,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16269 to 16269. [2020-10-29 14:00:32,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16269 states. [2020-10-29 14:00:32,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16269 states to 16269 states and 22261 transitions. [2020-10-29 14:00:32,028 INFO L78 Accepts]: Start accepts. Automaton has 16269 states and 22261 transitions. Word has length 164 [2020-10-29 14:00:32,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:32,029 INFO L481 AbstractCegarLoop]: Abstraction has 16269 states and 22261 transitions. [2020-10-29 14:00:32,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:32,029 INFO L276 IsEmpty]: Start isEmpty. Operand 16269 states and 22261 transitions. [2020-10-29 14:00:32,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-29 14:00:32,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:32,050 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:32,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:00:32,050 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:32,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:32,051 INFO L82 PathProgramCache]: Analyzing trace with hash -511572201, now seen corresponding path program 1 times [2020-10-29 14:00:32,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:32,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652557922] [2020-10-29 14:00:32,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:32,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:32,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:32,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:32,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:32,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:32,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:32,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:32,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:32,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:35,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:37,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:37,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-29 14:00:37,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:00:37,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 14:00:37,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:37,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:37,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:37,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:37,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 14:00:37,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:37,581 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:00:37,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:37,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:37,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:37,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:37,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:37,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:00:37,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:37,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:37,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:37,637 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 14:00:37,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652557922] [2020-10-29 14:00:37,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:37,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:37,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509895653] [2020-10-29 14:00:37,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:37,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:37,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:37,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:37,640 INFO L87 Difference]: Start difference. First operand 16269 states and 22261 transitions. Second operand 5 states. [2020-10-29 14:00:38,092 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-29 14:00:42,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:42,241 INFO L93 Difference]: Finished difference Result 28911 states and 39646 transitions. [2020-10-29 14:00:42,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:00:42,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-29 14:00:42,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:42,269 INFO L225 Difference]: With dead ends: 28911 [2020-10-29 14:00:42,269 INFO L226 Difference]: Without dead ends: 16272 [2020-10-29 14:00:42,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:00:42,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16272 states. [2020-10-29 14:00:43,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16272 to 16269. [2020-10-29 14:00:43,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16269 states. [2020-10-29 14:00:43,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16269 states to 16269 states and 22182 transitions. [2020-10-29 14:00:43,376 INFO L78 Accepts]: Start accepts. Automaton has 16269 states and 22182 transitions. Word has length 167 [2020-10-29 14:00:43,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:43,378 INFO L481 AbstractCegarLoop]: Abstraction has 16269 states and 22182 transitions. [2020-10-29 14:00:43,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:43,378 INFO L276 IsEmpty]: Start isEmpty. Operand 16269 states and 22182 transitions. [2020-10-29 14:00:43,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-29 14:00:43,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:43,399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:43,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:00:43,399 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:43,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:43,400 INFO L82 PathProgramCache]: Analyzing trace with hash 890294232, now seen corresponding path program 1 times [2020-10-29 14:00:43,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:43,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163965049] [2020-10-29 14:00:43,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:43,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:43,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:43,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:43,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:43,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:43,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:43,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:48,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:48,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 14:00:48,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:00:48,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 14:00:48,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:48,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:00:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:00:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 14:00:48,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:48,937 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:00:48,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:48,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:48,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:48,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:48,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:48,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:00:48,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:48,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:48,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:00:48,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:48,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:00:48,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:49,012 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 14:00:49,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163965049] [2020-10-29 14:00:49,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:49,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:00:49,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262295458] [2020-10-29 14:00:49,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:00:49,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:49,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:00:49,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:00:49,014 INFO L87 Difference]: Start difference. First operand 16269 states and 22182 transitions. Second operand 9 states. [2020-10-29 14:00:49,546 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 14:00:52,790 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 14:00:53,267 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-29 14:00:55,449 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-29 14:00:55,936 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-29 14:00:57,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:57,294 INFO L93 Difference]: Finished difference Result 60324 states and 85630 transitions. [2020-10-29 14:00:57,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 14:00:57,294 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2020-10-29 14:00:57,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:57,363 INFO L225 Difference]: With dead ends: 60324 [2020-10-29 14:00:57,363 INFO L226 Difference]: Without dead ends: 46482 [2020-10-29 14:00:57,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-29 14:00:57,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46482 states. [2020-10-29 14:00:59,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46482 to 25665. [2020-10-29 14:00:59,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25665 states. [2020-10-29 14:00:59,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25665 states to 25665 states and 34932 transitions. [2020-10-29 14:00:59,657 INFO L78 Accepts]: Start accepts. Automaton has 25665 states and 34932 transitions. Word has length 168 [2020-10-29 14:00:59,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:59,657 INFO L481 AbstractCegarLoop]: Abstraction has 25665 states and 34932 transitions. [2020-10-29 14:00:59,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:00:59,657 INFO L276 IsEmpty]: Start isEmpty. Operand 25665 states and 34932 transitions. [2020-10-29 14:00:59,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-29 14:00:59,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:59,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:59,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:00:59,676 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:59,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:59,677 INFO L82 PathProgramCache]: Analyzing trace with hash -128278627, now seen corresponding path program 1 times [2020-10-29 14:00:59,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:59,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096344602] [2020-10-29 14:00:59,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:59,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:59,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:59,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:59,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:59,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:59,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:04,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:04,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 14:01:04,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:01:04,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 14:01:04,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:04,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:04,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:01:04,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 14:01:04,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 14:01:04,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:05,194 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:01:05,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:05,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:05,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:05,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:05,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:05,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:01:05,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:05,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:05,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:05,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:05,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:05,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:05,251 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 14:01:05,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096344602] [2020-10-29 14:01:05,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:05,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:01:05,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829637089] [2020-10-29 14:01:05,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:01:05,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:05,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:01:05,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:05,253 INFO L87 Difference]: Start difference. First operand 25665 states and 34932 transitions. Second operand 5 states. [2020-10-29 14:01:08,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:08,514 INFO L93 Difference]: Finished difference Result 43637 states and 59478 transitions. [2020-10-29 14:01:08,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:01:08,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-29 14:01:08,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:08,534 INFO L225 Difference]: With dead ends: 43637 [2020-10-29 14:01:08,534 INFO L226 Difference]: Without dead ends: 18449 [2020-10-29 14:01:08,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:01:08,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18449 states. [2020-10-29 14:01:10,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18449 to 18448. [2020-10-29 14:01:10,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18448 states. [2020-10-29 14:01:10,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18448 states to 18448 states and 25095 transitions. [2020-10-29 14:01:10,110 INFO L78 Accepts]: Start accepts. Automaton has 18448 states and 25095 transitions. Word has length 168 [2020-10-29 14:01:10,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:10,110 INFO L481 AbstractCegarLoop]: Abstraction has 18448 states and 25095 transitions. [2020-10-29 14:01:10,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:01:10,110 INFO L276 IsEmpty]: Start isEmpty. Operand 18448 states and 25095 transitions. [2020-10-29 14:01:10,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-29 14:01:10,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:10,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:10,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:01:10,122 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:10,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:10,122 INFO L82 PathProgramCache]: Analyzing trace with hash 221980490, now seen corresponding path program 1 times [2020-10-29 14:01:10,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:10,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050039545] [2020-10-29 14:01:10,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:10,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:10,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:10,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:10,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:10,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:10,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:15,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:15,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-29 14:01:15,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:01:15,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 14:01:15,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:15,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:15,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:01:15,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 14:01:15,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 14:01:15,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:15,602 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:01:15,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:15,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:15,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:15,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:15,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:15,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:01:15,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:15,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:15,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:15,652 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 14:01:15,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050039545] [2020-10-29 14:01:15,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:15,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:01:15,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904239716] [2020-10-29 14:01:15,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:01:15,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:15,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:01:15,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:15,654 INFO L87 Difference]: Start difference. First operand 18448 states and 25095 transitions. Second operand 5 states. [2020-10-29 14:01:18,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:18,402 INFO L93 Difference]: Finished difference Result 32143 states and 43816 transitions. [2020-10-29 14:01:18,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:01:18,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-29 14:01:18,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:18,421 INFO L225 Difference]: With dead ends: 32143 [2020-10-29 14:01:18,421 INFO L226 Difference]: Without dead ends: 15468 [2020-10-29 14:01:18,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:01:18,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15468 states. [2020-10-29 14:01:19,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15468 to 15468. [2020-10-29 14:01:19,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15468 states. [2020-10-29 14:01:19,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15468 states to 15468 states and 21014 transitions. [2020-10-29 14:01:19,670 INFO L78 Accepts]: Start accepts. Automaton has 15468 states and 21014 transitions. Word has length 171 [2020-10-29 14:01:19,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:19,670 INFO L481 AbstractCegarLoop]: Abstraction has 15468 states and 21014 transitions. [2020-10-29 14:01:19,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:01:19,671 INFO L276 IsEmpty]: Start isEmpty. Operand 15468 states and 21014 transitions. [2020-10-29 14:01:19,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-29 14:01:19,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:19,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:19,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 14:01:19,680 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:19,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:19,681 INFO L82 PathProgramCache]: Analyzing trace with hash 321814983, now seen corresponding path program 1 times [2020-10-29 14:01:19,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:19,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405109727] [2020-10-29 14:01:19,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:19,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:19,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:19,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:19,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:19,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:19,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:19,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:19,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:24,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:24,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-29 14:01:24,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:01:24,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 14:01:24,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:24,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:24,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:01:24,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:01:24,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 14:01:24,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:25,215 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:01:25,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:25,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:25,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:25,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:25,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:25,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 14:01:25,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:25,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:25,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:01:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:01:25,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:25,285 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 14:01:25,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405109727] [2020-10-29 14:01:25,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:25,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:01:25,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363170175] [2020-10-29 14:01:25,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:01:25,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:25,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:01:25,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:01:25,287 INFO L87 Difference]: Start difference. First operand 15468 states and 21014 transitions. Second operand 9 states. [2020-10-29 14:01:25,768 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 14:01:28,908 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 14:01:29,381 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-29 14:01:31,605 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-29 14:01:32,127 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-29 14:01:33,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:33,386 INFO L93 Difference]: Finished difference Result 50392 states and 70205 transitions. [2020-10-29 14:01:33,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 14:01:33,386 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 174 [2020-10-29 14:01:33,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:33,429 INFO L225 Difference]: With dead ends: 50392 [2020-10-29 14:01:33,430 INFO L226 Difference]: Without dead ends: 36309 [2020-10-29 14:01:33,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2020-10-29 14:01:33,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36309 states. [2020-10-29 14:01:35,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36309 to 18557. [2020-10-29 14:01:35,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18557 states. [2020-10-29 14:01:35,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18557 states to 18557 states and 25030 transitions. [2020-10-29 14:01:35,227 INFO L78 Accepts]: Start accepts. Automaton has 18557 states and 25030 transitions. Word has length 174 [2020-10-29 14:01:35,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:35,228 INFO L481 AbstractCegarLoop]: Abstraction has 18557 states and 25030 transitions. [2020-10-29 14:01:35,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:01:35,228 INFO L276 IsEmpty]: Start isEmpty. Operand 18557 states and 25030 transitions. [2020-10-29 14:01:35,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-29 14:01:35,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:35,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:35,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 14:01:35,240 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:35,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:35,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1504790107, now seen corresponding path program 1 times [2020-10-29 14:01:35,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:35,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074575330] [2020-10-29 14:01:35,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:35,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:35,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:35,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:35,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:35,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:35,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:37,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:37,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:37,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:37,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:40,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:40,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-29 14:01:40,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:01:40,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 14:01:40,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:40,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:40,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:01:40,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:01:40,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 14:01:40,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:40,858 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:01:40,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:40,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:40,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:40,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:40,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:40,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:01:40,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:40,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:40,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:40,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:40,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:40,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:40,936 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 14:01:40,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074575330] [2020-10-29 14:01:40,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:40,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:01:40,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786605113] [2020-10-29 14:01:40,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:01:40,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:40,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:01:40,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:40,938 INFO L87 Difference]: Start difference. First operand 18557 states and 25030 transitions. Second operand 5 states. [2020-10-29 14:01:41,391 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-29 14:01:45,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:45,213 INFO L93 Difference]: Finished difference Result 31966 states and 43229 transitions. [2020-10-29 14:01:45,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:01:45,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-29 14:01:45,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:45,239 INFO L225 Difference]: With dead ends: 31966 [2020-10-29 14:01:45,239 INFO L226 Difference]: Without dead ends: 18550 [2020-10-29 14:01:45,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:01:45,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18550 states. [2020-10-29 14:01:46,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18550 to 18547. [2020-10-29 14:01:46,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18547 states. [2020-10-29 14:01:46,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18547 states to 18547 states and 24901 transitions. [2020-10-29 14:01:46,967 INFO L78 Accepts]: Start accepts. Automaton has 18547 states and 24901 transitions. Word has length 174 [2020-10-29 14:01:46,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:46,967 INFO L481 AbstractCegarLoop]: Abstraction has 18547 states and 24901 transitions. [2020-10-29 14:01:46,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:01:46,968 INFO L276 IsEmpty]: Start isEmpty. Operand 18547 states and 24901 transitions. [2020-10-29 14:01:46,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-29 14:01:46,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:46,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:46,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 14:01:46,980 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:46,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:46,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1361111172, now seen corresponding path program 1 times [2020-10-29 14:01:46,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:46,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331723400] [2020-10-29 14:01:46,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:47,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:47,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:47,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:47,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:47,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:47,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:47,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:47,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:47,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:50,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:50,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:52,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:52,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 14:01:52,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:01:52,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 14:01:52,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:52,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:52,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:01:52,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:01:52,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 14:01:52,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:52,492 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:01:52,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:52,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:52,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:52,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:52,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:52,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:01:52,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:52,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:52,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:52,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:52,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:52,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:52,553 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 14:01:52,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331723400] [2020-10-29 14:01:52,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:52,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:01:52,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385831487] [2020-10-29 14:01:52,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:01:52,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:52,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:01:52,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:52,555 INFO L87 Difference]: Start difference. First operand 18547 states and 24901 transitions. Second operand 5 states. [2020-10-29 14:01:53,028 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-29 14:01:57,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:57,934 INFO L93 Difference]: Finished difference Result 31909 states and 42896 transitions. [2020-10-29 14:01:57,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:01:57,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-29 14:01:57,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:57,957 INFO L225 Difference]: With dead ends: 31909 [2020-10-29 14:01:57,957 INFO L226 Difference]: Without dead ends: 18550 [2020-10-29 14:01:57,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:01:57,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18550 states. [2020-10-29 14:01:59,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18550 to 18547. [2020-10-29 14:01:59,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18547 states. [2020-10-29 14:01:59,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18547 states to 18547 states and 24763 transitions. [2020-10-29 14:01:59,776 INFO L78 Accepts]: Start accepts. Automaton has 18547 states and 24763 transitions. Word has length 175 [2020-10-29 14:01:59,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:59,776 INFO L481 AbstractCegarLoop]: Abstraction has 18547 states and 24763 transitions. [2020-10-29 14:01:59,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:01:59,776 INFO L276 IsEmpty]: Start isEmpty. Operand 18547 states and 24763 transitions. [2020-10-29 14:01:59,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-29 14:01:59,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:59,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:59,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 14:01:59,787 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:59,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:59,787 INFO L82 PathProgramCache]: Analyzing trace with hash -950157642, now seen corresponding path program 1 times [2020-10-29 14:01:59,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:59,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314007912] [2020-10-29 14:01:59,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:59,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:59,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:59,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:59,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:00,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:04,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:04,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-29 14:02:04,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:02:04,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 14:02:04,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:04,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:04,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:02:04,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:02:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 14:02:04,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:05,350 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:02:05,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:05,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:05,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:05,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:05,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:05,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 14:02:05,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:05,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:02:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:02:05,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:05,436 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 14:02:05,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314007912] [2020-10-29 14:02:05,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:05,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:02:05,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070173220] [2020-10-29 14:02:05,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:02:05,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:05,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:02:05,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:02:05,438 INFO L87 Difference]: Start difference. First operand 18547 states and 24763 transitions. Second operand 9 states. [2020-10-29 14:02:05,942 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 14:02:09,542 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 14:02:10,022 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-29 14:02:12,296 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-29 14:02:12,949 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-29 14:02:14,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:14,735 INFO L93 Difference]: Finished difference Result 54251 states and 73293 transitions. [2020-10-29 14:02:14,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 14:02:14,736 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2020-10-29 14:02:14,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:14,787 INFO L225 Difference]: With dead ends: 54251 [2020-10-29 14:02:14,787 INFO L226 Difference]: Without dead ends: 43102 [2020-10-29 14:02:14,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-29 14:02:14,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43102 states. [2020-10-29 14:02:17,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43102 to 24537. [2020-10-29 14:02:17,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24537 states. [2020-10-29 14:02:17,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24537 states to 24537 states and 32408 transitions. [2020-10-29 14:02:17,358 INFO L78 Accepts]: Start accepts. Automaton has 24537 states and 32408 transitions. Word has length 176 [2020-10-29 14:02:17,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:17,359 INFO L481 AbstractCegarLoop]: Abstraction has 24537 states and 32408 transitions. [2020-10-29 14:02:17,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:02:17,359 INFO L276 IsEmpty]: Start isEmpty. Operand 24537 states and 32408 transitions. [2020-10-29 14:02:17,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-29 14:02:17,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:17,377 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:17,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 14:02:17,377 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:17,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:17,377 INFO L82 PathProgramCache]: Analyzing trace with hash 440225288, now seen corresponding path program 1 times [2020-10-29 14:02:17,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:17,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92990861] [2020-10-29 14:02:17,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:17,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:17,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:17,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:18,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:18,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:19,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:19,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:22,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:22,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-29 14:02:22,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:02:22,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 14:02:22,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:22,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:22,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:22,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 14:02:22,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 14:02:22,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:23,085 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:02:23,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:23,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:23,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:23,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:23,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:23,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:02:23,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:23,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:23,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:23,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:23,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:23,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:23,138 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 14:02:23,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92990861] [2020-10-29 14:02:23,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:23,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:23,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359013469] [2020-10-29 14:02:23,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:23,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:23,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:23,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:23,140 INFO L87 Difference]: Start difference. First operand 24537 states and 32408 transitions. Second operand 5 states. [2020-10-29 14:02:23,577 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 14:02:27,579 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-29 14:02:32,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:32,869 INFO L93 Difference]: Finished difference Result 64836 states and 89826 transitions. [2020-10-29 14:02:32,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:02:32,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-29 14:02:32,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:32,953 INFO L225 Difference]: With dead ends: 64836 [2020-10-29 14:02:32,953 INFO L226 Difference]: Without dead ends: 53519 [2020-10-29 14:02:32,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:02:33,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53519 states. [2020-10-29 14:02:39,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53519 to 53513. [2020-10-29 14:02:39,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53513 states. [2020-10-29 14:02:39,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53513 states to 53513 states and 72452 transitions. [2020-10-29 14:02:39,139 INFO L78 Accepts]: Start accepts. Automaton has 53513 states and 72452 transitions. Word has length 176 [2020-10-29 14:02:39,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:39,140 INFO L481 AbstractCegarLoop]: Abstraction has 53513 states and 72452 transitions. [2020-10-29 14:02:39,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:02:39,140 INFO L276 IsEmpty]: Start isEmpty. Operand 53513 states and 72452 transitions. [2020-10-29 14:02:39,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-29 14:02:39,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:39,159 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:39,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 14:02:39,160 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:39,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:39,160 INFO L82 PathProgramCache]: Analyzing trace with hash -961260836, now seen corresponding path program 1 times [2020-10-29 14:02:39,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:39,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918027605] [2020-10-29 14:02:39,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:39,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:39,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:39,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:40,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:40,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:40,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:40,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:41,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:41,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:44,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:44,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-29 14:02:44,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:02:44,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 14:02:44,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:44,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:44,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:02:44,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 14:02:44,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 14:02:44,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:44,668 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:02:44,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:44,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:44,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:44,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:44,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:44,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:02:44,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:44,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:44,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:44,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:44,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:44,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:44,731 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 14:02:44,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918027605] [2020-10-29 14:02:44,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:44,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:02:44,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89653463] [2020-10-29 14:02:44,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:02:44,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:44,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:02:44,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:02:44,733 INFO L87 Difference]: Start difference. First operand 53513 states and 72452 transitions. Second operand 6 states. [2020-10-29 14:02:45,224 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 218