/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:22:45,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:22:45,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:22:45,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:22:45,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:22:45,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:22:45,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:22:45,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:22:45,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:22:45,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:22:45,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:22:45,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:22:45,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:22:45,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:22:45,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:22:45,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:22:45,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:22:45,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:22:45,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:22:45,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:22:45,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:22:45,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:22:45,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:22:45,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:22:45,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:22:45,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:22:45,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:22:45,517 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:22:45,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:22:45,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:22:45,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:22:45,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:22:45,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:22:45,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:22:45,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:22:45,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:22:45,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:22:45,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:22:45,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:22:45,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:22:45,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:22:45,531 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:22:45,578 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:22:45,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:22:45,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:22:45,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:22:45,582 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:22:45,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:22:45,583 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:22:45,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:22:45,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:22:45,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:22:45,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:22:45,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:22:45,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:22:45,584 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:22:45,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:22:45,585 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:22:45,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:22:45,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:22:45,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:22:45,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:22:45,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:22:45,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:22:45,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:22:45,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:22:45,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:22:45,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:22:45,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:22:45,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:22:45,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:22:45,589 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:22:46,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:22:46,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:22:46,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:22:46,132 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:22:46,133 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:22:46,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-27 05:22:46,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/282e204fd/9306486f4d5c46739f9eb035ff8f920c/FLAGf43f94902 [2020-10-27 05:22:46,959 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:22:46,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-27 05:22:46,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/282e204fd/9306486f4d5c46739f9eb035ff8f920c/FLAGf43f94902 [2020-10-27 05:22:47,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/282e204fd/9306486f4d5c46739f9eb035ff8f920c [2020-10-27 05:22:47,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:22:47,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:22:47,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:22:47,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:22:47,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:22:47,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:22:47" (1/1) ... [2020-10-27 05:22:47,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@242af7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:22:47, skipping insertion in model container [2020-10-27 05:22:47,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:22:47" (1/1) ... [2020-10-27 05:22:47,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:22:47,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:22:47,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:22:47,941 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:22:48,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:22:48,273 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:22:48,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:22:48 WrapperNode [2020-10-27 05:22:48,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:22:48,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:22:48,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:22:48,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:22:48,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:22:48" (1/1) ... [2020-10-27 05:22:48,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:22:48" (1/1) ... [2020-10-27 05:22:48,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:22:48" (1/1) ... [2020-10-27 05:22:48,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:22:48" (1/1) ... [2020-10-27 05:22:48,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:22:48" (1/1) ... [2020-10-27 05:22:48,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:22:48" (1/1) ... [2020-10-27 05:22:48,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:22:48" (1/1) ... [2020-10-27 05:22:48,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:22:48,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:22:48,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:22:48,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:22:48,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:22:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:22:48,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:22:48,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:22:48,512 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:22:48,512 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:22:48,512 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:22:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:22:48,513 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:22:48,513 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:22:48,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:22:48,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:22:48,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:22:48,513 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:22:48,513 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:22:48,514 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:22:48,514 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:22:48,514 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:22:48,514 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:22:48,514 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:22:48,514 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:22:48,515 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:22:48,515 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-27 05:22:48,515 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:22:48,515 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:22:48,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:22:48,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:22:48,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:22:48,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:22:48,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:22:48,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:22:48,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:22:50,008 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:22:50,009 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:22:50,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:22:50 BoogieIcfgContainer [2020-10-27 05:22:50,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:22:50,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:22:50,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:22:50,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:22:50,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:22:47" (1/3) ... [2020-10-27 05:22:50,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a9f564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:22:50, skipping insertion in model container [2020-10-27 05:22:50,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:22:48" (2/3) ... [2020-10-27 05:22:50,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a9f564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:22:50, skipping insertion in model container [2020-10-27 05:22:50,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:22:50" (3/3) ... [2020-10-27 05:22:50,021 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-27 05:22:50,033 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:22:50,037 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:22:50,048 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:22:50,080 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:22:50,080 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:22:50,081 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:22:50,081 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:22:50,081 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:22:50,081 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:22:50,081 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:22:50,081 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:22:50,107 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states. [2020-10-27 05:22:50,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 05:22:50,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:22:50,131 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] [2020-10-27 05:22:50,132 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:22:50,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:22:50,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1101326989, now seen corresponding path program 1 times [2020-10-27 05:22:50,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:22:50,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596189252] [2020-10-27 05:22:50,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:22:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:50,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:51,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:51,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:51,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:52,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:52,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:52,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:52,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:52,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:53,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:55,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:55,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:55,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 05:22:55,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:22:55,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 05:22:55,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:55,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:22:55,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 05:22:55,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 05:22:55,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:22:55,948 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:22:55,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:22:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:55,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:56,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:56,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:22:56,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:22:56,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 05:22:56,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:56,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:22:56,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:22:56,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:22:56,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:22:56,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:22:56,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596189252] [2020-10-27 05:22:56,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:22:56,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:22:56,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088968526] [2020-10-27 05:22:56,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:22:56,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:22:56,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:22:56,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:22:56,122 INFO L87 Difference]: Start difference. First operand 399 states. Second operand 5 states. [2020-10-27 05:22:58,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:22:58,393 INFO L93 Difference]: Finished difference Result 753 states and 1224 transitions. [2020-10-27 05:22:58,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:22:58,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-27 05:22:58,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:22:58,424 INFO L225 Difference]: With dead ends: 753 [2020-10-27 05:22:58,424 INFO L226 Difference]: Without dead ends: 392 [2020-10-27 05:22:58,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:22:58,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2020-10-27 05:22:58,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2020-10-27 05:22:58,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-10-27 05:22:58,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 597 transitions. [2020-10-27 05:22:58,561 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 597 transitions. Word has length 152 [2020-10-27 05:22:58,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:22:58,561 INFO L481 AbstractCegarLoop]: Abstraction has 392 states and 597 transitions. [2020-10-27 05:22:58,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:22:58,562 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 597 transitions. [2020-10-27 05:22:58,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-27 05:22:58,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:22:58,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:22:58,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:22:58,568 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:22:58,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:22:58,569 INFO L82 PathProgramCache]: Analyzing trace with hash -125181938, now seen corresponding path program 1 times [2020-10-27 05:22:58,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:22:58,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379556457] [2020-10-27 05:22:58,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:22:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:58,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:58,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:58,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:58,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:58,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:59,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:59,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:59,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:59,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:59,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:00,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:00,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:00,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:03,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:03,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-27 05:23:03,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:23:03,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 05:23:03,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:23:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:23:03,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 05:23:03,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:23:04,241 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:23:04,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:23:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:04,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:04,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:04,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:23:04,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:23:04,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:23:04,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:23:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:23:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:23:04,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:23:04,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379556457] [2020-10-27 05:23:04,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:23:04,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:23:04,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031117224] [2020-10-27 05:23:04,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:23:04,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:23:04,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:23:04,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:23:04,379 INFO L87 Difference]: Start difference. First operand 392 states and 597 transitions. Second operand 9 states. [2020-10-27 05:23:04,715 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:23:15,220 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-27 05:23:15,528 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:23:15,915 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:23:16,222 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-27 05:23:16,480 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 05:23:16,913 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:23:17,226 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:23:17,553 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-27 05:23:17,861 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:23:18,139 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-27 05:23:18,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:23:18,170 INFO L93 Difference]: Finished difference Result 3930 states and 6233 transitions. [2020-10-27 05:23:18,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 05:23:18,171 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 191 [2020-10-27 05:23:18,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:23:18,195 INFO L225 Difference]: With dead ends: 3930 [2020-10-27 05:23:18,195 INFO L226 Difference]: Without dead ends: 3652 [2020-10-27 05:23:18,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=237, Invalid=575, Unknown=0, NotChecked=0, Total=812 [2020-10-27 05:23:18,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3652 states. [2020-10-27 05:23:18,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3652 to 724. [2020-10-27 05:23:18,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2020-10-27 05:23:18,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1119 transitions. [2020-10-27 05:23:18,301 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1119 transitions. Word has length 191 [2020-10-27 05:23:18,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:23:18,302 INFO L481 AbstractCegarLoop]: Abstraction has 724 states and 1119 transitions. [2020-10-27 05:23:18,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:23:18,302 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1119 transitions. [2020-10-27 05:23:18,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-27 05:23:18,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:23:18,308 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:23:18,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:23:18,308 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:23:18,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:23:18,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1128732929, now seen corresponding path program 1 times [2020-10-27 05:23:18,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:23:18,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890422057] [2020-10-27 05:23:18,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:23:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:18,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:18,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:18,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:18,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:18,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:18,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:18,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:18,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:18,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:18,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:19,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:19,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:23,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:23,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 05:23:23,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:23:23,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 05:23:23,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:23,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:23:23,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 05:23:23,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 05:23:23,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:23,694 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:23:23,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:23:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:23,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:23,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:23,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:23:23,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:23:23,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 05:23:23,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:23,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:23:23,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:23:23,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:23:23,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:23:23,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:23:23,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890422057] [2020-10-27 05:23:23,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:23:23,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:23:23,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846253063] [2020-10-27 05:23:23,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:23:23,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:23:23,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:23:23,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:23:23,852 INFO L87 Difference]: Start difference. First operand 724 states and 1119 transitions. Second operand 4 states. [2020-10-27 05:23:24,196 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-27 05:23:26,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:23:26,175 INFO L93 Difference]: Finished difference Result 1861 states and 2918 transitions. [2020-10-27 05:23:26,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:23:26,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 193 [2020-10-27 05:23:26,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:23:26,185 INFO L225 Difference]: With dead ends: 1861 [2020-10-27 05:23:26,186 INFO L226 Difference]: Without dead ends: 1191 [2020-10-27 05:23:26,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:23:26,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2020-10-27 05:23:26,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1188. [2020-10-27 05:23:26,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2020-10-27 05:23:26,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1847 transitions. [2020-10-27 05:23:26,278 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1847 transitions. Word has length 193 [2020-10-27 05:23:26,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:23:26,279 INFO L481 AbstractCegarLoop]: Abstraction has 1188 states and 1847 transitions. [2020-10-27 05:23:26,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:23:26,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1847 transitions. [2020-10-27 05:23:26,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-27 05:23:26,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:23:26,285 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:23:26,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:23:26,286 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:23:26,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:23:26,286 INFO L82 PathProgramCache]: Analyzing trace with hash 161879795, now seen corresponding path program 1 times [2020-10-27 05:23:26,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:23:26,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310802910] [2020-10-27 05:23:26,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:23:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:26,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:26,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:26,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:26,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:26,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:26,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:26,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:26,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:26,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:26,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:27,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:27,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:27,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:28,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:28,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:31,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:31,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-27 05:23:31,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:23:31,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 05:23:31,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:23:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:23:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 05:23:31,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:31,688 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:23:31,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:23:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:31,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:31,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:31,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:23:31,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:23:31,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 05:23:31,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:31,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:23:31,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:23:31,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:23:31,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:31,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:23:31,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310802910] [2020-10-27 05:23:31,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:23:31,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:23:31,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483951842] [2020-10-27 05:23:31,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:23:31,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:23:31,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:23:31,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:23:31,809 INFO L87 Difference]: Start difference. First operand 1188 states and 1847 transitions. Second operand 6 states. [2020-10-27 05:23:32,101 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:23:34,551 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 05:23:34,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:23:34,565 INFO L93 Difference]: Finished difference Result 3207 states and 5030 transitions. [2020-10-27 05:23:34,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:23:34,566 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 196 [2020-10-27 05:23:34,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:23:34,577 INFO L225 Difference]: With dead ends: 3207 [2020-10-27 05:23:34,577 INFO L226 Difference]: Without dead ends: 2071 [2020-10-27 05:23:34,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:23:34,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2020-10-27 05:23:34,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 2068. [2020-10-27 05:23:34,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2068 states. [2020-10-27 05:23:34,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 3226 transitions. [2020-10-27 05:23:34,710 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 3226 transitions. Word has length 196 [2020-10-27 05:23:34,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:23:34,711 INFO L481 AbstractCegarLoop]: Abstraction has 2068 states and 3226 transitions. [2020-10-27 05:23:34,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:23:34,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 3226 transitions. [2020-10-27 05:23:34,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-27 05:23:34,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:23:34,718 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:23:34,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:23:34,719 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:23:34,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:23:34,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1146331501, now seen corresponding path program 1 times [2020-10-27 05:23:34,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:23:34,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853435560] [2020-10-27 05:23:34,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:23:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:34,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:34,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:34,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:34,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:34,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:35,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:35,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:35,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:35,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:35,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:35,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:35,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:35,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:36,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:36,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:38,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:38,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:39,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:39,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-27 05:23:39,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 05:23:39,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:23:39,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:39,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:23:39,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:23:39,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 05:23:39,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:40,300 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:23:40,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:23:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:40,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:40,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:40,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:23:40,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:23:40,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 05:23:40,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:23:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:23:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:23:40,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:23:40,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853435560] [2020-10-27 05:23:40,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:23:40,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:23:40,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231812045] [2020-10-27 05:23:40,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:23:40,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:23:40,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:23:40,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:23:40,462 INFO L87 Difference]: Start difference. First operand 2068 states and 3226 transitions. Second operand 11 states. [2020-10-27 05:23:40,835 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:23:47,276 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:23:47,581 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 05:23:47,885 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-27 05:23:47,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:23:47,903 INFO L93 Difference]: Finished difference Result 15690 states and 24609 transitions. [2020-10-27 05:23:47,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 05:23:47,904 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 196 [2020-10-27 05:23:47,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:23:47,974 INFO L225 Difference]: With dead ends: 15690 [2020-10-27 05:23:47,974 INFO L226 Difference]: Without dead ends: 13859 [2020-10-27 05:23:47,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=396, Invalid=1496, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 05:23:47,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13859 states. [2020-10-27 05:23:48,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13859 to 2216. [2020-10-27 05:23:48,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-10-27 05:23:48,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 3452 transitions. [2020-10-27 05:23:48,340 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 3452 transitions. Word has length 196 [2020-10-27 05:23:48,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:23:48,340 INFO L481 AbstractCegarLoop]: Abstraction has 2216 states and 3452 transitions. [2020-10-27 05:23:48,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:23:48,341 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 3452 transitions. [2020-10-27 05:23:48,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-27 05:23:48,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:23:48,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:23:48,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:23:48,349 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:23:48,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:23:48,350 INFO L82 PathProgramCache]: Analyzing trace with hash -190190811, now seen corresponding path program 1 times [2020-10-27 05:23:48,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:23:48,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39260100] [2020-10-27 05:23:48,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:23:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:48,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:48,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:48,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:48,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:48,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:48,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:48,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:48,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:48,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:48,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:49,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:50,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:50,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:53,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:53,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-27 05:23:53,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:23:53,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 05:23:53,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:23:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:23:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 05:23:53,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:53,813 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:23:53,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:23:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:53,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:53,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:53,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:23:53,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:23:53,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 05:23:53,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:53,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:23:53,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:23:53,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:23:53,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:53,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:23:53,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39260100] [2020-10-27 05:23:53,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:23:53,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:23:53,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044849347] [2020-10-27 05:23:53,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:23:53,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:23:53,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:23:53,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:23:53,959 INFO L87 Difference]: Start difference. First operand 2216 states and 3452 transitions. Second operand 7 states. [2020-10-27 05:23:54,251 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 05:23:56,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:23:56,557 INFO L93 Difference]: Finished difference Result 5249 states and 8224 transitions. [2020-10-27 05:23:56,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:23:56,558 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-10-27 05:23:56,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:23:56,575 INFO L225 Difference]: With dead ends: 5249 [2020-10-27 05:23:56,575 INFO L226 Difference]: Without dead ends: 3138 [2020-10-27 05:23:56,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:23:56,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2020-10-27 05:23:56,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 2208. [2020-10-27 05:23:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2208 states. [2020-10-27 05:23:56,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 3432 transitions. [2020-10-27 05:23:56,811 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 3432 transitions. Word has length 197 [2020-10-27 05:23:56,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:23:56,812 INFO L481 AbstractCegarLoop]: Abstraction has 2208 states and 3432 transitions. [2020-10-27 05:23:56,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:23:56,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 3432 transitions. [2020-10-27 05:23:56,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-27 05:23:56,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:23:56,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:23:56,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:23:56,820 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:23:56,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:23:56,821 INFO L82 PathProgramCache]: Analyzing trace with hash -596305761, now seen corresponding path program 1 times [2020-10-27 05:23:56,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:23:56,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374822903] [2020-10-27 05:23:56,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:23:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:56,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:56,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:56,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:56,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:57,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:57,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:57,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:57,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:57,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:57,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:57,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:58,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:58,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:01,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:01,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-27 05:24:01,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:24:01,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 05:24:01,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:01,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:24:01,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:24:01,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 05:24:01,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:02,221 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:24:02,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:24:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:02,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:02,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:02,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:24:02,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:24:02,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 05:24:02,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:02,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:24:02,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:24:02,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:24:02,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:24:02,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374822903] [2020-10-27 05:24:02,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:24:02,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:24:02,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142250106] [2020-10-27 05:24:02,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:24:02,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:24:02,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:24:02,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:24:02,323 INFO L87 Difference]: Start difference. First operand 2208 states and 3432 transitions. Second operand 7 states. [2020-10-27 05:24:02,611 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 05:24:04,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:24:04,763 INFO L93 Difference]: Finished difference Result 4901 states and 7660 transitions. [2020-10-27 05:24:04,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:24:04,764 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-10-27 05:24:04,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:24:04,771 INFO L225 Difference]: With dead ends: 4901 [2020-10-27 05:24:04,771 INFO L226 Difference]: Without dead ends: 2830 [2020-10-27 05:24:04,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:24:04,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2830 states. [2020-10-27 05:24:04,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2830 to 2200. [2020-10-27 05:24:04,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-27 05:24:05,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3412 transitions. [2020-10-27 05:24:05,001 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3412 transitions. Word has length 197 [2020-10-27 05:24:05,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:24:05,001 INFO L481 AbstractCegarLoop]: Abstraction has 2200 states and 3412 transitions. [2020-10-27 05:24:05,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:24:05,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3412 transitions. [2020-10-27 05:24:05,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-27 05:24:05,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:24:05,009 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:24:05,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:24:05,009 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:24:05,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:24:05,010 INFO L82 PathProgramCache]: Analyzing trace with hash 2004397331, now seen corresponding path program 1 times [2020-10-27 05:24:05,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:24:05,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051792713] [2020-10-27 05:24:05,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:24:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:05,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:05,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:05,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:05,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:05,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:05,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:05,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:05,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:05,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:05,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:05,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:06,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:06,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:06,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:10,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:10,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-27 05:24:10,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:24:10,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 05:24:10,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:10,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:24:10,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:24:10,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 05:24:10,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:10,415 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:24:10,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:24:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:10,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:10,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:10,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:24:10,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:24:10,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 05:24:10,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:10,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:24:10,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:24:10,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:24:10,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:10,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:24:10,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051792713] [2020-10-27 05:24:10,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:24:10,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:24:10,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684284003] [2020-10-27 05:24:10,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:24:10,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:24:10,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:24:10,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:24:10,515 INFO L87 Difference]: Start difference. First operand 2200 states and 3412 transitions. Second operand 9 states. [2020-10-27 05:24:10,887 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:24:16,334 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-27 05:24:16,623 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 05:24:16,977 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:24:17,272 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-27 05:24:17,627 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-27 05:24:17,913 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 05:24:18,242 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:24:18,558 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 05:24:18,834 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:24:18,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:24:18,886 INFO L93 Difference]: Finished difference Result 16161 states and 25275 transitions. [2020-10-27 05:24:18,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 05:24:18,886 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 197 [2020-10-27 05:24:18,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:24:18,914 INFO L225 Difference]: With dead ends: 16161 [2020-10-27 05:24:18,914 INFO L226 Difference]: Without dead ends: 14403 [2020-10-27 05:24:18,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2020-10-27 05:24:18,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14403 states. [2020-10-27 05:24:19,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14403 to 5086. [2020-10-27 05:24:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5086 states. [2020-10-27 05:24:19,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 7901 transitions. [2020-10-27 05:24:19,523 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 7901 transitions. Word has length 197 [2020-10-27 05:24:19,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:24:19,523 INFO L481 AbstractCegarLoop]: Abstraction has 5086 states and 7901 transitions. [2020-10-27 05:24:19,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:24:19,523 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 7901 transitions. [2020-10-27 05:24:19,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-27 05:24:19,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:24:19,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:24:19,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:24:19,538 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:24:19,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:24:19,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1185853081, now seen corresponding path program 1 times [2020-10-27 05:24:19,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:24:19,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367208437] [2020-10-27 05:24:19,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:24:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:19,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:19,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:19,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:19,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:19,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:19,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:19,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:19,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:19,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:20,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:20,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:20,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:20,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:24,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:24,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-27 05:24:24,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:24:24,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 05:24:24,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:24,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:24:24,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:24:24,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 05:24:24,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:24,972 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:24:24,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:24:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:24,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:25,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:25,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:24:25,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:24:25,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:24:25,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:25,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:24:25,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:24:25,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:24:25,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:25,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:24:25,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367208437] [2020-10-27 05:24:25,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:24:25,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:24:25,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087371448] [2020-10-27 05:24:25,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:24:25,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:24:25,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:24:25,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:24:25,063 INFO L87 Difference]: Start difference. First operand 5086 states and 7901 transitions. Second operand 7 states. [2020-10-27 05:24:25,403 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 05:24:28,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:24:28,081 INFO L93 Difference]: Finished difference Result 10820 states and 16839 transitions. [2020-10-27 05:24:28,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:24:28,082 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-10-27 05:24:28,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:24:28,097 INFO L225 Difference]: With dead ends: 10820 [2020-10-27 05:24:28,097 INFO L226 Difference]: Without dead ends: 5903 [2020-10-27 05:24:28,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:24:28,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-10-27 05:24:28,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 5078. [2020-10-27 05:24:28,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5078 states. [2020-10-27 05:24:28,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5078 states to 5078 states and 7881 transitions. [2020-10-27 05:24:28,716 INFO L78 Accepts]: Start accepts. Automaton has 5078 states and 7881 transitions. Word has length 197 [2020-10-27 05:24:28,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:24:28,716 INFO L481 AbstractCegarLoop]: Abstraction has 5078 states and 7881 transitions. [2020-10-27 05:24:28,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:24:28,717 INFO L276 IsEmpty]: Start isEmpty. Operand 5078 states and 7881 transitions. [2020-10-27 05:24:28,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-27 05:24:28,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:24:28,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:24:28,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:24:28,731 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:24:28,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:24:28,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1626659285, now seen corresponding path program 1 times [2020-10-27 05:24:28,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:24:28,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810552436] [2020-10-27 05:24:28,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:24:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:28,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:28,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:28,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:28,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:28,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:28,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:28,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:29,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:29,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:29,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:29,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:29,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:30,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:33,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:33,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-27 05:24:33,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:24:33,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:24:33,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:33,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:24:33,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:24:33,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 05:24:33,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:34,179 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:24:34,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:24:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:34,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:34,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:34,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:24:34,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:24:34,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:24:34,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:34,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:24:34,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:24:34,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:24:34,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:34,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:24:34,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810552436] [2020-10-27 05:24:34,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:24:34,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:24:34,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161509115] [2020-10-27 05:24:34,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:24:34,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:24:34,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:24:34,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:24:34,286 INFO L87 Difference]: Start difference. First operand 5078 states and 7881 transitions. Second operand 7 states. [2020-10-27 05:24:34,563 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 05:24:37,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:24:37,351 INFO L93 Difference]: Finished difference Result 12372 states and 19331 transitions. [2020-10-27 05:24:37,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:24:37,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-10-27 05:24:37,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:24:37,367 INFO L225 Difference]: With dead ends: 12372 [2020-10-27 05:24:37,367 INFO L226 Difference]: Without dead ends: 7363 [2020-10-27 05:24:37,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:24:37,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7363 states. [2020-10-27 05:24:38,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7363 to 4552. [2020-10-27 05:24:38,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4552 states. [2020-10-27 05:24:38,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4552 states to 4552 states and 7071 transitions. [2020-10-27 05:24:38,049 INFO L78 Accepts]: Start accepts. Automaton has 4552 states and 7071 transitions. Word has length 197 [2020-10-27 05:24:38,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:24:38,050 INFO L481 AbstractCegarLoop]: Abstraction has 4552 states and 7071 transitions. [2020-10-27 05:24:38,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:24:38,050 INFO L276 IsEmpty]: Start isEmpty. Operand 4552 states and 7071 transitions. [2020-10-27 05:24:38,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-27 05:24:38,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:24:38,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:24:38,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:24:38,061 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:24:38,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:24:38,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1556313260, now seen corresponding path program 1 times [2020-10-27 05:24:38,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:24:38,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297366472] [2020-10-27 05:24:38,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:24:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:38,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:38,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:38,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:38,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:38,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:38,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:38,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:38,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:38,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:38,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:38,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:38,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:40,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:40,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:43,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:43,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-27 05:24:43,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:24:43,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 05:24:43,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:43,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:24:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:24:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 05:24:43,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:43,752 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:24:43,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:24:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:43,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:43,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:43,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:24:43,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:24:43,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:24:43,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:24:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:24:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:24:43,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:43,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:24:43,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297366472] [2020-10-27 05:24:43,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:24:43,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:24:43,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861376252] [2020-10-27 05:24:43,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:24:43,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:24:43,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:24:43,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:24:43,894 INFO L87 Difference]: Start difference. First operand 4552 states and 7071 transitions. Second operand 10 states. [2020-10-27 05:24:44,242 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:24:50,577 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-27 05:24:50,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:24:50,723 INFO L93 Difference]: Finished difference Result 27839 states and 43477 transitions. [2020-10-27 05:24:50,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 05:24:50,725 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 198 [2020-10-27 05:24:50,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:24:50,779 INFO L225 Difference]: With dead ends: 27839 [2020-10-27 05:24:50,779 INFO L226 Difference]: Without dead ends: 25418 [2020-10-27 05:24:50,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2020-10-27 05:24:50,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25418 states. [2020-10-27 05:24:51,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25418 to 4566. [2020-10-27 05:24:51,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4566 states. [2020-10-27 05:24:51,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4566 states to 4566 states and 7092 transitions. [2020-10-27 05:24:51,640 INFO L78 Accepts]: Start accepts. Automaton has 4566 states and 7092 transitions. Word has length 198 [2020-10-27 05:24:51,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:24:51,641 INFO L481 AbstractCegarLoop]: Abstraction has 4566 states and 7092 transitions. [2020-10-27 05:24:51,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:24:51,641 INFO L276 IsEmpty]: Start isEmpty. Operand 4566 states and 7092 transitions. [2020-10-27 05:24:51,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-27 05:24:51,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:24:51,648 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:24:51,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:24:51,648 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:24:51,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:24:51,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1221970726, now seen corresponding path program 1 times [2020-10-27 05:24:51,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:24:51,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008453337] [2020-10-27 05:24:51,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:24:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:51,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:51,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:51,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:51,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:51,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:51,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:51,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:52,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:52,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:52,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:52,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:52,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:54,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:54,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:54,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:56,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:56,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-27 05:24:56,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:24:56,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 05:24:56,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:24:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:24:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 05:24:56,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:57,036 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:24:57,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:24:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:57,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:57,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:57,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:24:57,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:24:57,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 05:24:57,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:57,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:24:57,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:24:57,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:24:57,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:57,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:24:57,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008453337] [2020-10-27 05:24:57,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:24:57,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:24:57,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900914520] [2020-10-27 05:24:57,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:24:57,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:24:57,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:24:57,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:24:57,160 INFO L87 Difference]: Start difference. First operand 4566 states and 7092 transitions. Second operand 8 states. [2020-10-27 05:24:57,480 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 05:25:03,401 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:25:03,770 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 05:25:03,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:25:03,953 INFO L93 Difference]: Finished difference Result 21848 states and 34077 transitions. [2020-10-27 05:25:03,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:25:03,953 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-10-27 05:25:03,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:25:03,977 INFO L225 Difference]: With dead ends: 21848 [2020-10-27 05:25:03,977 INFO L226 Difference]: Without dead ends: 19487 [2020-10-27 05:25:03,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-27 05:25:04,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19487 states. [2020-10-27 05:25:04,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19487 to 4940. [2020-10-27 05:25:04,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4940 states. [2020-10-27 05:25:04,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4940 states to 4940 states and 7661 transitions. [2020-10-27 05:25:04,821 INFO L78 Accepts]: Start accepts. Automaton has 4940 states and 7661 transitions. Word has length 199 [2020-10-27 05:25:04,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:25:04,822 INFO L481 AbstractCegarLoop]: Abstraction has 4940 states and 7661 transitions. [2020-10-27 05:25:04,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:25:04,822 INFO L276 IsEmpty]: Start isEmpty. Operand 4940 states and 7661 transitions. [2020-10-27 05:25:04,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-27 05:25:04,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:25:04,830 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:25:04,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:25:04,830 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:25:04,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:25:04,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1406989908, now seen corresponding path program 1 times [2020-10-27 05:25:04,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:25:04,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790899169] [2020-10-27 05:25:04,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:25:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:04,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:04,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:04,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:04,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:05,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:05,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:05,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:05,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:05,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:05,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:05,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:05,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:07,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:07,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:07,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:09,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:25:09,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-27 05:25:09,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:25:09,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 05:25:09,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:25:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:25:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:25:09,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 05:25:09,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:25:10,220 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:25:10,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:25:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:10,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:10,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:25:10,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:25:10,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:25:10,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 05:25:10,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:25:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:25:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:25:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:25:10,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:25:10,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:25:10,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790899169] [2020-10-27 05:25:10,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:25:10,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:25:10,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415344088] [2020-10-27 05:25:10,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:25:10,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:25:10,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:25:10,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:25:10,331 INFO L87 Difference]: Start difference. First operand 4940 states and 7661 transitions. Second operand 8 states. [2020-10-27 05:25:10,617 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 05:25:16,612 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:25:16,960 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 05:25:17,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:25:17,054 INFO L93 Difference]: Finished difference Result 20374 states and 31667 transitions. [2020-10-27 05:25:17,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:25:17,054 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-10-27 05:25:17,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:25:17,077 INFO L225 Difference]: With dead ends: 20374 [2020-10-27 05:25:17,078 INFO L226 Difference]: Without dead ends: 18043 [2020-10-27 05:25:17,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-27 05:25:17,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18043 states. [2020-10-27 05:25:18,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18043 to 5746. [2020-10-27 05:25:18,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5746 states. [2020-10-27 05:25:18,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5746 states to 5746 states and 8899 transitions. [2020-10-27 05:25:18,288 INFO L78 Accepts]: Start accepts. Automaton has 5746 states and 8899 transitions. Word has length 199 [2020-10-27 05:25:18,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:25:18,289 INFO L481 AbstractCegarLoop]: Abstraction has 5746 states and 8899 transitions. [2020-10-27 05:25:18,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:25:18,289 INFO L276 IsEmpty]: Start isEmpty. Operand 5746 states and 8899 transitions. [2020-10-27 05:25:18,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-27 05:25:18,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:25:18,297 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:25:18,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:25:18,297 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:25:18,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:25:18,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1695761440, now seen corresponding path program 1 times [2020-10-27 05:25:18,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:25:18,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072993164] [2020-10-27 05:25:18,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:25:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:18,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:18,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:18,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:18,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:18,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:18,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:18,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:18,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:18,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:18,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:18,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:18,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:20,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:20,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:20,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:23,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:25:23,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-27 05:25:23,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:25:23,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 05:25:23,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:25:23,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:25:23,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:25:23,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 05:25:23,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:25:23,679 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:25:23,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:25:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:23,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:23,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:25:23,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:25:23,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:25:23,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:25:23,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:25:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:25:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:25:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:25:23,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:25:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:25:23,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072993164] [2020-10-27 05:25:23,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:25:23,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:25:23,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974348967] [2020-10-27 05:25:23,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:25:23,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:25:23,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:25:23,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:25:23,753 INFO L87 Difference]: Start difference. First operand 5746 states and 8899 transitions. Second operand 8 states. [2020-10-27 05:25:24,107 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 05:25:31,691 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:25:32,042 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 05:25:32,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:25:32,264 INFO L93 Difference]: Finished difference Result 27338 states and 42702 transitions. [2020-10-27 05:25:32,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:25:32,264 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-10-27 05:25:32,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:25:32,300 INFO L225 Difference]: With dead ends: 27338 [2020-10-27 05:25:32,300 INFO L226 Difference]: Without dead ends: 24863 [2020-10-27 05:25:32,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-27 05:25:32,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24863 states. [2020-10-27 05:25:33,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24863 to 6866. [2020-10-27 05:25:33,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6866 states. [2020-10-27 05:25:33,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6866 states to 6866 states and 10577 transitions. [2020-10-27 05:25:33,972 INFO L78 Accepts]: Start accepts. Automaton has 6866 states and 10577 transitions. Word has length 199 [2020-10-27 05:25:33,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:25:33,972 INFO L481 AbstractCegarLoop]: Abstraction has 6866 states and 10577 transitions. [2020-10-27 05:25:33,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:25:33,972 INFO L276 IsEmpty]: Start isEmpty. Operand 6866 states and 10577 transitions. [2020-10-27 05:25:33,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-27 05:25:33,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:25:33,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:25:33,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 05:25:33,984 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:25:33,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:25:33,984 INFO L82 PathProgramCache]: Analyzing trace with hash 2056198451, now seen corresponding path program 1 times [2020-10-27 05:25:33,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:25:33,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824856959] [2020-10-27 05:25:33,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:25:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:34,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:34,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:34,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:34,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:34,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:34,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:34,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:34,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:34,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:34,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:34,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:34,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:34,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:35,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:35,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:38,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:38,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:38,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:39,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:25:39,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-27 05:25:39,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 05:25:39,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 05:25:39,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:25:39,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 05:25:39,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:25:39,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 05:25:39,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:25:39,503 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:25:39,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:25:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:39,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:39,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:25:39,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:25:39,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:25:39,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:25:39,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:25:39,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:25:39,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:25:39,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:25:39,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:25:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:25:39,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824856959] [2020-10-27 05:25:39,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:25:39,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 05:25:39,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758477480] [2020-10-27 05:25:39,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 05:25:39,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:25:39,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 05:25:39,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:25:39,592 INFO L87 Difference]: Start difference. First operand 6866 states and 10577 transitions. Second operand 12 states. [2020-10-27 05:25:39,923 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 05:25:59,587 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:25:59,958 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-27 05:26:00,425 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:26:00,773 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-27 05:26:01,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:26:01,119 INFO L93 Difference]: Finished difference Result 56910 states and 88590 transitions. [2020-10-27 05:26:01,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-27 05:26:01,119 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 199 [2020-10-27 05:26:01,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:26:01,189 INFO L225 Difference]: With dead ends: 56910 [2020-10-27 05:26:01,189 INFO L226 Difference]: Without dead ends: 51477 [2020-10-27 05:26:01,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1873 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=898, Invalid=4072, Unknown=0, NotChecked=0, Total=4970 [2020-10-27 05:26:01,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51477 states. [2020-10-27 05:26:03,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51477 to 9666. [2020-10-27 05:26:03,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9666 states. [2020-10-27 05:26:03,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9666 states to 9666 states and 14848 transitions. [2020-10-27 05:26:03,649 INFO L78 Accepts]: Start accepts. Automaton has 9666 states and 14848 transitions. Word has length 199 [2020-10-27 05:26:03,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:26:03,650 INFO L481 AbstractCegarLoop]: Abstraction has 9666 states and 14848 transitions. [2020-10-27 05:26:03,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 05:26:03,650 INFO L276 IsEmpty]: Start isEmpty. Operand 9666 states and 14848 transitions. [2020-10-27 05:26:03,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-27 05:26:03,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:26:03,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:26:03,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 05:26:03,664 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:26:03,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:26:03,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1433898739, now seen corresponding path program 1 times [2020-10-27 05:26:03,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:26:03,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386772859] [2020-10-27 05:26:03,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:26:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:03,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:03,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:03,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:03,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:03,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:03,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:03,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:04,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:04,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:04,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:04,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:05,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:05,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:05,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:08,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:08,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-27 05:26:08,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:26:08,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 05:26:08,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:08,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:26:08,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:26:08,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 05:26:08,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:09,049 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:26:09,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:26:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:09,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:09,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:09,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:26:09,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:26:09,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:26:09,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:09,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:26:09,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:26:09,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:26:09,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:26:09,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386772859] [2020-10-27 05:26:09,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:26:09,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:26:09,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667167569] [2020-10-27 05:26:09,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:26:09,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:26:09,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:26:09,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:26:09,121 INFO L87 Difference]: Start difference. First operand 9666 states and 14848 transitions. Second operand 8 states. [2020-10-27 05:26:09,407 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 05:26:16,016 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:26:16,386 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 05:26:16,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:26:16,478 INFO L93 Difference]: Finished difference Result 19126 states and 29345 transitions. [2020-10-27 05:26:16,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:26:16,478 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-10-27 05:26:16,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:26:16,495 INFO L225 Difference]: With dead ends: 19126 [2020-10-27 05:26:16,495 INFO L226 Difference]: Without dead ends: 16848 [2020-10-27 05:26:16,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-27 05:26:16,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16848 states. [2020-10-27 05:26:18,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16848 to 9610. [2020-10-27 05:26:18,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9610 states. [2020-10-27 05:26:18,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9610 states to 9610 states and 14752 transitions. [2020-10-27 05:26:18,505 INFO L78 Accepts]: Start accepts. Automaton has 9610 states and 14752 transitions. Word has length 199 [2020-10-27 05:26:18,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:26:18,505 INFO L481 AbstractCegarLoop]: Abstraction has 9610 states and 14752 transitions. [2020-10-27 05:26:18,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:26:18,505 INFO L276 IsEmpty]: Start isEmpty. Operand 9610 states and 14752 transitions. [2020-10-27 05:26:18,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-27 05:26:18,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:26:18,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:26:18,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 05:26:18,520 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:26:18,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:26:18,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1410488517, now seen corresponding path program 1 times [2020-10-27 05:26:18,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:26:18,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987893799] [2020-10-27 05:26:18,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:26:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:18,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:18,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:18,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:18,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:18,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:18,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:18,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:18,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:18,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:18,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:18,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:18,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:19,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:19,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking...