/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:39:52,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:39:52,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:39:52,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:39:52,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:39:52,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:39:52,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:39:52,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:39:52,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:39:52,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:39:52,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:39:52,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:39:52,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:39:52,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:39:52,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:39:52,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:39:52,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:39:52,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:39:52,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:39:52,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:39:52,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:39:52,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:39:52,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:39:52,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:39:52,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:39:52,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:39:52,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:39:52,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:39:52,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:39:52,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:39:52,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:39:52,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:39:52,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:39:52,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:39:52,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:39:52,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:39:52,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:39:52,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:39:52,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:39:52,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:39:52,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:39:52,446 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 23:39:52,507 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:39:52,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:39:52,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:39:52,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:39:52,510 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:39:52,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:39:52,511 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:39:52,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:39:52,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:39:52,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:39:52,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:39:52,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:39:52,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:39:52,514 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:39:52,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:39:52,514 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:39:52,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:39:52,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:39:52,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:39:52,516 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:39:52,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:39:52,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:39:52,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:39:52,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:39:52,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:39:52,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:39:52,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:39:52,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:39:52,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:39:52,518 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:39:53,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:39:53,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:39:53,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:39:53,036 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:39:53,037 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:39:53,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 23:39:53,124 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e601cd5c6/93018271f4bb4b6d8a025c6c6eec8e59/FLAG827920e63 [2020-10-27 23:39:53,761 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:39:53,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 23:39:53,774 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e601cd5c6/93018271f4bb4b6d8a025c6c6eec8e59/FLAG827920e63 [2020-10-27 23:39:54,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e601cd5c6/93018271f4bb4b6d8a025c6c6eec8e59 [2020-10-27 23:39:54,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:39:54,078 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:39:54,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:39:54,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:39:54,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:39:54,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:39:54" (1/1) ... [2020-10-27 23:39:54,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24faec1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:39:54, skipping insertion in model container [2020-10-27 23:39:54,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:39:54" (1/1) ... [2020-10-27 23:39:54,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:39:54,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:39:54,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:39:54,458 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:39:54,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:39:54,559 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:39:54,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:39:54 WrapperNode [2020-10-27 23:39:54,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:39:54,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:39:54,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:39:54,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:39:54,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:39:54" (1/1) ... [2020-10-27 23:39:54,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:39:54" (1/1) ... [2020-10-27 23:39:54,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:39:54" (1/1) ... [2020-10-27 23:39:54,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:39:54" (1/1) ... [2020-10-27 23:39:54,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:39:54" (1/1) ... [2020-10-27 23:39:54,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:39:54" (1/1) ... [2020-10-27 23:39:54,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:39:54" (1/1) ... [2020-10-27 23:39:54,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:39:54,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:39:54,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:39:54,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:39:54,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:39:54" (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 23:39:54,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:39:54,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:39:54,716 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:39:54,716 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:39:54,716 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:39:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:39:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:39:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:39:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:39:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:39:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:39:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:39:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:39:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:39:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:39:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:39:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:39:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:39:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:39:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:39:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:39:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:39:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:39:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:39:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:39:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:39:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:39:55,727 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:39:55,727 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:39:55,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:39:55 BoogieIcfgContainer [2020-10-27 23:39:55,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:39:55,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:39:55,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:39:55,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:39:55,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:39:54" (1/3) ... [2020-10-27 23:39:55,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462f22f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:39:55, skipping insertion in model container [2020-10-27 23:39:55,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:39:54" (2/3) ... [2020-10-27 23:39:55,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462f22f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:39:55, skipping insertion in model container [2020-10-27 23:39:55,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:39:55" (3/3) ... [2020-10-27 23:39:55,740 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 23:39:55,752 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:39:55,758 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:39:55,770 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:39:55,795 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:39:55,795 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:39:55,795 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:39:55,795 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:39:55,796 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:39:55,796 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:39:55,796 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:39:55,796 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:39:55,817 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states. [2020-10-27 23:39:55,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 23:39:55,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:39:55,827 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] [2020-10-27 23:39:55,827 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:39:55,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:39:55,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1094105252, now seen corresponding path program 1 times [2020-10-27 23:39:55,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:39:55,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695413227] [2020-10-27 23:39:55,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:39:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:39:56,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:56,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:56,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:56,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:56,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:58,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:58,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:01,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:01,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 23:40:01,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:40:01,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 23:40:01,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:40:01,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:40:01,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 23:40:01,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 23:40:01,511 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 23:40:01,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:40:01,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:01,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:01,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:01,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:40:01,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:40:01,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 23:40:01,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:40:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:40:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:40:01,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:01,583 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 23:40:01,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695413227] [2020-10-27 23:40:01,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:40:01,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:40:01,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408445023] [2020-10-27 23:40:01,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:40:01,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:40:01,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:40:01,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:40:01,622 INFO L87 Difference]: Start difference. First operand 115 states. Second operand 7 states. [2020-10-27 23:40:01,960 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:40:02,874 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:40:03,065 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:40:03,232 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-27 23:40:03,432 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 23:40:04,263 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:40:04,455 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:40:04,768 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:40:04,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:40:04,811 INFO L93 Difference]: Finished difference Result 587 states and 940 transitions. [2020-10-27 23:40:04,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:40:04,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-10-27 23:40:04,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:40:04,854 INFO L225 Difference]: With dead ends: 587 [2020-10-27 23:40:04,857 INFO L226 Difference]: Without dead ends: 471 [2020-10-27 23:40:04,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:40:04,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-10-27 23:40:04,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 226. [2020-10-27 23:40:04,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-27 23:40:04,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 324 transitions. [2020-10-27 23:40:04,990 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 324 transitions. Word has length 53 [2020-10-27 23:40:04,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:40:04,991 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 324 transitions. [2020-10-27 23:40:04,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:40:04,991 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 324 transitions. [2020-10-27 23:40:04,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 23:40:04,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:40:04,994 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] [2020-10-27 23:40:04,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:40:04,995 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:40:04,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:40:04,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1321190962, now seen corresponding path program 1 times [2020-10-27 23:40:04,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:40:04,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175907582] [2020-10-27 23:40:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:40:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:05,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:05,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:05,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:05,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:05,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:06,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:07,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:07,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:07,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:07,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:10,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:10,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 23:40:10,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:40:10,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 23:40:10,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:10,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:40:10,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 23:40:10,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 23:40:10,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:40:10,328 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 23:40:10,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:40:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:10,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:10,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:10,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:40:10,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:40:10,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 23:40:10,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:10,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:40:10,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:40:10,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:40:10,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:40:10,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:40:10,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175907582] [2020-10-27 23:40:10,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:40:10,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:40:10,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475558221] [2020-10-27 23:40:10,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:40:10,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:40:10,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:40:10,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:40:10,401 INFO L87 Difference]: Start difference. First operand 226 states and 324 transitions. Second operand 4 states. [2020-10-27 23:40:10,600 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:40:11,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:40:11,140 INFO L93 Difference]: Finished difference Result 507 states and 762 transitions. [2020-10-27 23:40:11,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:40:11,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-27 23:40:11,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:40:11,147 INFO L225 Difference]: With dead ends: 507 [2020-10-27 23:40:11,148 INFO L226 Difference]: Without dead ends: 386 [2020-10-27 23:40:11,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:40:11,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-10-27 23:40:11,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 375. [2020-10-27 23:40:11,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-27 23:40:11,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 551 transitions. [2020-10-27 23:40:11,231 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 551 transitions. Word has length 54 [2020-10-27 23:40:11,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:40:11,232 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 551 transitions. [2020-10-27 23:40:11,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:40:11,232 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 551 transitions. [2020-10-27 23:40:11,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 23:40:11,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:40:11,242 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] [2020-10-27 23:40:11,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:40:11,243 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:40:11,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:40:11,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1383996859, now seen corresponding path program 1 times [2020-10-27 23:40:11,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:40:11,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89182189] [2020-10-27 23:40:11,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:40:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:11,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:11,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:11,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:11,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:12,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:12,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:12,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:12,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:12,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:16,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:16,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 23:40:16,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:40:16,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 23:40:16,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:16,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:40:16,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 23:40:16,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 23:40:16,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:16,488 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 23:40:16,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:40:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:16,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:16,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:16,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:40:16,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:40:16,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:40:16,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:40:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:40:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:40:16,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:16,524 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 23:40:16,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89182189] [2020-10-27 23:40:16,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:40:16,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:40:16,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655448552] [2020-10-27 23:40:16,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:40:16,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:40:16,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:40:16,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:40:16,528 INFO L87 Difference]: Start difference. First operand 375 states and 551 transitions. Second operand 4 states. [2020-10-27 23:40:16,688 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:40:17,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:40:17,215 INFO L93 Difference]: Finished difference Result 625 states and 934 transitions. [2020-10-27 23:40:17,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:40:17,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-27 23:40:17,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:40:17,218 INFO L225 Difference]: With dead ends: 625 [2020-10-27 23:40:17,218 INFO L226 Difference]: Without dead ends: 384 [2020-10-27 23:40:17,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:40:17,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-10-27 23:40:17,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 381. [2020-10-27 23:40:17,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-27 23:40:17,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 554 transitions. [2020-10-27 23:40:17,261 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 554 transitions. Word has length 55 [2020-10-27 23:40:17,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:40:17,263 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 554 transitions. [2020-10-27 23:40:17,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:40:17,264 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 554 transitions. [2020-10-27 23:40:17,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 23:40:17,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:40:17,265 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] [2020-10-27 23:40:17,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:40:17,267 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:40:17,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:40:17,268 INFO L82 PathProgramCache]: Analyzing trace with hash 620067600, now seen corresponding path program 1 times [2020-10-27 23:40:17,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:40:17,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032207614] [2020-10-27 23:40:17,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:40:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:17,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:17,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:17,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:17,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:18,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:18,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:18,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:18,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:18,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:20,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:21,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:22,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:22,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 23:40:22,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:40:22,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:40:22,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:22,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:40:22,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:40:22,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 23:40:22,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:22,511 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 23:40:22,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:40:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:22,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:22,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:22,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:40:22,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:40:22,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:40:22,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:40:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:40:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:40:22,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:22,543 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 23:40:22,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032207614] [2020-10-27 23:40:22,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:40:22,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:40:22,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132360077] [2020-10-27 23:40:22,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:40:22,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:40:22,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:40:22,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:40:22,547 INFO L87 Difference]: Start difference. First operand 381 states and 554 transitions. Second operand 6 states. [2020-10-27 23:40:22,711 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-27 23:40:23,173 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 23:40:23,346 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-27 23:40:24,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:40:24,066 INFO L93 Difference]: Finished difference Result 1715 states and 2582 transitions. [2020-10-27 23:40:24,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:40:24,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-27 23:40:24,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:40:24,076 INFO L225 Difference]: With dead ends: 1715 [2020-10-27 23:40:24,076 INFO L226 Difference]: Without dead ends: 1458 [2020-10-27 23:40:24,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:40:24,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2020-10-27 23:40:24,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 705. [2020-10-27 23:40:24,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2020-10-27 23:40:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 1042 transitions. [2020-10-27 23:40:24,153 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 1042 transitions. Word has length 56 [2020-10-27 23:40:24,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:40:24,156 INFO L481 AbstractCegarLoop]: Abstraction has 705 states and 1042 transitions. [2020-10-27 23:40:24,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:40:24,156 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 1042 transitions. [2020-10-27 23:40:24,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 23:40:24,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:40:24,158 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] [2020-10-27 23:40:24,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:40:24,159 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:40:24,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:40:24,159 INFO L82 PathProgramCache]: Analyzing trace with hash 67831113, now seen corresponding path program 1 times [2020-10-27 23:40:24,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:40:24,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374297062] [2020-10-27 23:40:24,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:40:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:24,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:24,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:24,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:24,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:24,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:24,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:25,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:27,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:27,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:27,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:27,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:27,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:29,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:29,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 23:40:29,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:40:29,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:40:29,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:29,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 23:40:29,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 23:40:29,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 23:40:29,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:29,574 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 23:40:29,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:40:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:29,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:29,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:29,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:40:29,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:40:29,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:40:29,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:29,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:40:29,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:40:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:40:29,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:29,614 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 23:40:29,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374297062] [2020-10-27 23:40:29,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:40:29,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:40:29,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702447790] [2020-10-27 23:40:29,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:40:29,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:40:29,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:40:29,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:40:29,621 INFO L87 Difference]: Start difference. First operand 705 states and 1042 transitions. Second operand 10 states. [2020-10-27 23:40:29,808 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:40:30,466 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 23:40:31,190 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-27 23:40:31,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:40:31,492 INFO L93 Difference]: Finished difference Result 7127 states and 10744 transitions. [2020-10-27 23:40:31,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 23:40:31,492 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-27 23:40:31,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:40:31,531 INFO L225 Difference]: With dead ends: 7127 [2020-10-27 23:40:31,532 INFO L226 Difference]: Without dead ends: 6507 [2020-10-27 23:40:31,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=197, Invalid=673, Unknown=0, NotChecked=0, Total=870 [2020-10-27 23:40:31,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6507 states. [2020-10-27 23:40:31,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6507 to 740. [2020-10-27 23:40:31,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2020-10-27 23:40:31,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1067 transitions. [2020-10-27 23:40:31,690 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1067 transitions. Word has length 56 [2020-10-27 23:40:31,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:40:31,691 INFO L481 AbstractCegarLoop]: Abstraction has 740 states and 1067 transitions. [2020-10-27 23:40:31,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:40:31,691 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1067 transitions. [2020-10-27 23:40:31,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 23:40:31,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:40:31,692 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] [2020-10-27 23:40:31,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:40:31,693 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:40:31,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:40:31,693 INFO L82 PathProgramCache]: Analyzing trace with hash 299488742, now seen corresponding path program 1 times [2020-10-27 23:40:31,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:40:31,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147149183] [2020-10-27 23:40:31,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:40:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:31,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:31,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:31,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:31,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:31,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:32,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:32,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:33,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:33,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:33,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:33,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:33,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:35,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:35,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:35,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:35,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:36,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:36,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 23:40:36,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:40:36,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:40:36,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:36,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 23:40:36,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 23:40:36,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 23:40:36,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:36,942 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 14 [2020-10-27 23:40:37,182 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 23:40:37,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:40:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:37,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:37,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:37,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:40:37,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:40:37,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:40:37,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:37,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:40:37,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:40:37,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:40:37,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:40:37,226 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 23:40:37,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147149183] [2020-10-27 23:40:37,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:40:37,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:40:37,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603263884] [2020-10-27 23:40:37,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:40:37,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:40:37,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:40:37,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:40:37,233 INFO L87 Difference]: Start difference. First operand 740 states and 1067 transitions. Second operand 10 states. [2020-10-27 23:40:37,459 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 23:40:38,137 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:40:39,419 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-27 23:40:39,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:40:39,557 INFO L93 Difference]: Finished difference Result 3434 states and 5068 transitions. [2020-10-27 23:40:39,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 23:40:39,557 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-27 23:40:39,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:40:39,574 INFO L225 Difference]: With dead ends: 3434 [2020-10-27 23:40:39,574 INFO L226 Difference]: Without dead ends: 2859 [2020-10-27 23:40:39,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:40:39,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2020-10-27 23:40:39,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 739. [2020-10-27 23:40:39,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-10-27 23:40:39,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1061 transitions. [2020-10-27 23:40:39,688 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1061 transitions. Word has length 56 [2020-10-27 23:40:39,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:40:39,690 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 1061 transitions. [2020-10-27 23:40:39,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:40:39,690 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1061 transitions. [2020-10-27 23:40:39,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 23:40:39,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:40:39,691 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] [2020-10-27 23:40:39,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:40:39,692 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:40:39,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:40:39,692 INFO L82 PathProgramCache]: Analyzing trace with hash 354338367, now seen corresponding path program 1 times [2020-10-27 23:40:39,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:40:39,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400701523] [2020-10-27 23:40:39,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:40:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:39,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:39,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:39,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:39,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:39,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:40,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:40,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:40,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:43,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:43,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:43,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:44,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:44,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:44,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:44,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:44,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:44,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:44,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:44,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:44,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 23:40:44,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 23:40:44,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:40:44,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:44,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 23:40:44,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 23:40:44,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 23:40:44,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:44,981 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 27 [2020-10-27 23:40:45,181 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 23:40:45,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:40:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:45,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:45,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:45,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:40:45,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:40:45,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:40:45,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:40:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:40:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:40:45,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:45,213 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 23:40:45,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400701523] [2020-10-27 23:40:45,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:40:45,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:40:45,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261137492] [2020-10-27 23:40:45,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:40:45,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:40:45,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:40:45,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:40:45,222 INFO L87 Difference]: Start difference. First operand 739 states and 1061 transitions. Second operand 11 states. [2020-10-27 23:40:45,470 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:40:46,260 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 23:40:47,006 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-27 23:40:47,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:40:47,348 INFO L93 Difference]: Finished difference Result 4216 states and 6206 transitions. [2020-10-27 23:40:47,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 23:40:47,349 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-10-27 23:40:47,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:40:47,368 INFO L225 Difference]: With dead ends: 4216 [2020-10-27 23:40:47,368 INFO L226 Difference]: Without dead ends: 3651 [2020-10-27 23:40:47,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=177, Invalid=579, Unknown=0, NotChecked=0, Total=756 [2020-10-27 23:40:47,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3651 states. [2020-10-27 23:40:47,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3651 to 774. [2020-10-27 23:40:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 774 states. [2020-10-27 23:40:47,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1088 transitions. [2020-10-27 23:40:47,509 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1088 transitions. Word has length 56 [2020-10-27 23:40:47,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:40:47,509 INFO L481 AbstractCegarLoop]: Abstraction has 774 states and 1088 transitions. [2020-10-27 23:40:47,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:40:47,509 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1088 transitions. [2020-10-27 23:40:47,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 23:40:47,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:40:47,511 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] [2020-10-27 23:40:47,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:40:47,511 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:40:47,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:40:47,511 INFO L82 PathProgramCache]: Analyzing trace with hash 33759509, now seen corresponding path program 1 times [2020-10-27 23:40:47,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:40:47,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489033844] [2020-10-27 23:40:47,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:40:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:47,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:47,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:47,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:47,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:47,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:47,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:48,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:48,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:48,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:49,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:52,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:52,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:52,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 23:40:52,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:40:52,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 23:40:52,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:52,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:40:52,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 23:40:52,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 23:40:52,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:52,726 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 23:40:52,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:40:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:52,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:52,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:52,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:40:52,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:40:52,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:40:52,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:52,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:40:52,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:40:52,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:40:52,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:52,764 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 23:40:52,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489033844] [2020-10-27 23:40:52,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:40:52,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:40:52,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974829838] [2020-10-27 23:40:52,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:40:52,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:40:52,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:40:52,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:40:52,770 INFO L87 Difference]: Start difference. First operand 774 states and 1088 transitions. Second operand 6 states. [2020-10-27 23:40:52,967 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:40:53,388 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 23:40:53,557 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:40:53,725 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:40:54,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:40:54,192 INFO L93 Difference]: Finished difference Result 2913 states and 4246 transitions. [2020-10-27 23:40:54,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 23:40:54,193 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-27 23:40:54,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:40:54,203 INFO L225 Difference]: With dead ends: 2913 [2020-10-27 23:40:54,203 INFO L226 Difference]: Without dead ends: 2376 [2020-10-27 23:40:54,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:40:54,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2020-10-27 23:40:54,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1581. [2020-10-27 23:40:54,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-10-27 23:40:54,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2263 transitions. [2020-10-27 23:40:54,402 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2263 transitions. Word has length 56 [2020-10-27 23:40:54,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:40:54,403 INFO L481 AbstractCegarLoop]: Abstraction has 1581 states and 2263 transitions. [2020-10-27 23:40:54,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:40:54,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2263 transitions. [2020-10-27 23:40:54,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 23:40:54,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:40:54,404 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] [2020-10-27 23:40:54,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:40:54,405 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:40:54,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:40:54,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1816568708, now seen corresponding path program 1 times [2020-10-27 23:40:54,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:40:54,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646631344] [2020-10-27 23:40:54,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:40:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:54,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:54,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:54,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:54,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:54,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:54,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:55,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:55,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:55,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:55,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:56,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:56,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:57,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:57,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:58,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:59,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:59,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 23:40:59,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:40:59,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 23:40:59,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:59,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 23:40:59,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:40:59,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 23:40:59,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:59,719 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 32 [2020-10-27 23:40:59,971 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 23:40:59,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:40:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:59,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:59,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:59,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:40:59,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:40:59,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:40:59,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:59,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:40:59,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:40:59,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:40:59,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:41:00,005 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 23:41:00,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646631344] [2020-10-27 23:41:00,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:41:00,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 23:41:00,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940414863] [2020-10-27 23:41:00,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 23:41:00,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:41:00,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 23:41:00,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:41:00,008 INFO L87 Difference]: Start difference. First operand 1581 states and 2263 transitions. Second operand 12 states. [2020-10-27 23:41:00,588 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 158 [2020-10-27 23:41:01,629 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-27 23:41:03,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:41:03,656 INFO L93 Difference]: Finished difference Result 8080 states and 11770 transitions. [2020-10-27 23:41:03,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 23:41:03,656 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-10-27 23:41:03,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:41:03,687 INFO L225 Difference]: With dead ends: 8080 [2020-10-27 23:41:03,687 INFO L226 Difference]: Without dead ends: 7290 [2020-10-27 23:41:03,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=139, Invalid=563, Unknown=0, NotChecked=0, Total=702 [2020-10-27 23:41:03,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7290 states. [2020-10-27 23:41:04,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7290 to 1588. [2020-10-27 23:41:04,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-10-27 23:41:04,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2273 transitions. [2020-10-27 23:41:04,015 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2273 transitions. Word has length 57 [2020-10-27 23:41:04,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:41:04,015 INFO L481 AbstractCegarLoop]: Abstraction has 1588 states and 2273 transitions. [2020-10-27 23:41:04,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 23:41:04,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2273 transitions. [2020-10-27 23:41:04,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 23:41:04,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:41:04,016 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] [2020-10-27 23:41:04,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:41:04,017 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:41:04,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:41:04,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1550839475, now seen corresponding path program 1 times [2020-10-27 23:41:04,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:41:04,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230915799] [2020-10-27 23:41:04,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:41:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:41:04,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:04,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:04,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:04,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:04,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:04,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:05,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:05,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:06,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:06,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:07,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:09,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:41:09,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 23:41:09,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:41:09,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:41:09,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:41:09,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:41:09,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:41:09,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:41:09,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:41:09,230 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 23:41:09,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:41:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:41:09,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:09,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:41:09,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:41:09,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:41:09,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:41:09,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:41:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:41:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:41:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:41:09,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:41:09,260 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 23:41:09,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230915799] [2020-10-27 23:41:09,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:41:09,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:41:09,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435174407] [2020-10-27 23:41:09,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:41:09,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:41:09,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:41:09,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:41:09,262 INFO L87 Difference]: Start difference. First operand 1588 states and 2273 transitions. Second operand 6 states. [2020-10-27 23:41:09,442 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-27 23:41:10,152 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 23:41:10,319 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-27 23:41:12,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:41:12,130 INFO L93 Difference]: Finished difference Result 10091 states and 14842 transitions. [2020-10-27 23:41:12,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:41:12,131 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-27 23:41:12,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:41:12,155 INFO L225 Difference]: With dead ends: 10091 [2020-10-27 23:41:12,155 INFO L226 Difference]: Without dead ends: 8948 [2020-10-27 23:41:12,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:41:12,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8948 states. [2020-10-27 23:41:12,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8948 to 4629. [2020-10-27 23:41:12,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4629 states. [2020-10-27 23:41:12,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 6745 transitions. [2020-10-27 23:41:12,756 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 6745 transitions. Word has length 57 [2020-10-27 23:41:12,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:41:12,756 INFO L481 AbstractCegarLoop]: Abstraction has 4629 states and 6745 transitions. [2020-10-27 23:41:12,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:41:12,756 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 6745 transitions. [2020-10-27 23:41:12,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 23:41:12,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:41:12,758 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] [2020-10-27 23:41:12,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:41:12,758 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:41:12,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:41:12,758 INFO L82 PathProgramCache]: Analyzing trace with hash 856739753, now seen corresponding path program 1 times [2020-10-27 23:41:12,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:41:12,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610779523] [2020-10-27 23:41:12,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:41:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:41:12,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:12,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:12,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:12,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:13,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:13,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:13,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:14,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:14,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:15,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:15,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:15,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:16,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:16,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:17,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:41:17,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 23:41:17,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:41:17,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:41:17,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:41:17,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 23:41:17,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:41:17,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 23:41:17,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:41:18,087 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-10-27 23:41:18,304 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 23:41:18,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:41:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:41:18,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:18,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:41:18,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:41:18,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:41:18,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:41:18,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:41:18,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:41:18,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:41:18,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:41:18,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:41:18,336 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 23:41:18,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610779523] [2020-10-27 23:41:18,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:41:18,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:41:18,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243700563] [2020-10-27 23:41:18,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:41:18,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:41:18,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:41:18,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:41:18,339 INFO L87 Difference]: Start difference. First operand 4629 states and 6745 transitions. Second operand 11 states. [2020-10-27 23:41:18,798 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 156 [2020-10-27 23:41:19,066 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-10-27 23:41:19,982 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-27 23:41:22,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:41:22,942 INFO L93 Difference]: Finished difference Result 14130 states and 20589 transitions. [2020-10-27 23:41:22,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 23:41:22,942 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-27 23:41:22,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:41:22,976 INFO L225 Difference]: With dead ends: 14130 [2020-10-27 23:41:22,976 INFO L226 Difference]: Without dead ends: 13215 [2020-10-27 23:41:22,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2020-10-27 23:41:22,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13215 states. [2020-10-27 23:41:23,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13215 to 4664. [2020-10-27 23:41:23,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4664 states. [2020-10-27 23:41:23,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4664 states to 4664 states and 6794 transitions. [2020-10-27 23:41:23,860 INFO L78 Accepts]: Start accepts. Automaton has 4664 states and 6794 transitions. Word has length 57 [2020-10-27 23:41:23,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:41:23,860 INFO L481 AbstractCegarLoop]: Abstraction has 4664 states and 6794 transitions. [2020-10-27 23:41:23,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:41:23,860 INFO L276 IsEmpty]: Start isEmpty. Operand 4664 states and 6794 transitions. [2020-10-27 23:41:23,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 23:41:23,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:41:23,862 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] [2020-10-27 23:41:23,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:41:23,862 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:41:23,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:41:23,863 INFO L82 PathProgramCache]: Analyzing trace with hash 128327480, now seen corresponding path program 1 times [2020-10-27 23:41:23,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:41:23,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657678667] [2020-10-27 23:41:23,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:41:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:41:23,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:23,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:23,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:24,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:24,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:24,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:24,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:25,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:25,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:28,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:41:28,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 23:41:28,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:41:28,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:41:28,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:41:28,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:41:28,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:41:28,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 23:41:28,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:41:29,074 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 23:41:29,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:41:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:41:29,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:29,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:41:29,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:41:29,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:41:29,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:41:29,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:41:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:41:29,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:41:29,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:41:29,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:41:29,099 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 23:41:29,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657678667] [2020-10-27 23:41:29,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:41:29,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:41:29,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144412257] [2020-10-27 23:41:29,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:41:29,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:41:29,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:41:29,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:41:29,101 INFO L87 Difference]: Start difference. First operand 4664 states and 6794 transitions. Second operand 7 states. [2020-10-27 23:41:29,300 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:41:29,873 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:41:30,050 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:41:30,211 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 23:41:30,388 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-27 23:41:31,551 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:41:31,779 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:41:32,816 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:41:32,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:41:32,966 INFO L93 Difference]: Finished difference Result 16903 states and 24962 transitions. [2020-10-27 23:41:32,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:41:32,967 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-10-27 23:41:32,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:41:33,001 INFO L225 Difference]: With dead ends: 16903 [2020-10-27 23:41:33,001 INFO L226 Difference]: Without dead ends: 13635 [2020-10-27 23:41:33,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:41:33,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13635 states. [2020-10-27 23:41:33,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13635 to 4076. [2020-10-27 23:41:33,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4076 states. [2020-10-27 23:41:33,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4076 states to 4076 states and 5912 transitions. [2020-10-27 23:41:33,777 INFO L78 Accepts]: Start accepts. Automaton has 4076 states and 5912 transitions. Word has length 57 [2020-10-27 23:41:33,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:41:33,777 INFO L481 AbstractCegarLoop]: Abstraction has 4076 states and 5912 transitions. [2020-10-27 23:41:33,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:41:33,777 INFO L276 IsEmpty]: Start isEmpty. Operand 4076 states and 5912 transitions. [2020-10-27 23:41:33,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 23:41:33,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:41:33,779 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] [2020-10-27 23:41:33,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 23:41:33,779 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:41:33,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:41:33,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1876875647, now seen corresponding path program 1 times [2020-10-27 23:41:33,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:41:33,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118837996] [2020-10-27 23:41:33,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:41:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:41:33,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:33,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:33,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:34,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:38,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:41:38,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 23:41:38,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 23:41:38,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4371 [2020-10-27 23:41:38,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:41:38,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:41:38,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 23:41:38,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 23:41:38,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:41:38,357 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 23:41:38,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:41:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:41:38,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:38,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:41:38,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:41:38,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:41:38,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:41:38,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:41:38,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:41:38,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:41:38,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:41:38,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:41:38,381 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 23:41:38,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118837996] [2020-10-27 23:41:38,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:41:38,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:41:38,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340727543] [2020-10-27 23:41:38,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:41:38,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:41:38,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:41:38,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:41:38,383 INFO L87 Difference]: Start difference. First operand 4076 states and 5912 transitions. Second operand 6 states. [2020-10-27 23:41:38,588 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:41:39,024 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:41:39,214 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 23:41:40,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:41:40,246 INFO L93 Difference]: Finished difference Result 8395 states and 12292 transitions. [2020-10-27 23:41:40,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 23:41:40,246 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-27 23:41:40,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:41:40,261 INFO L225 Difference]: With dead ends: 8395 [2020-10-27 23:41:40,261 INFO L226 Difference]: Without dead ends: 6240 [2020-10-27 23:41:40,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:41:40,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2020-10-27 23:41:41,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 5582. [2020-10-27 23:41:41,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5582 states. [2020-10-27 23:41:41,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5582 states to 5582 states and 8169 transitions. [2020-10-27 23:41:41,189 INFO L78 Accepts]: Start accepts. Automaton has 5582 states and 8169 transitions. Word has length 58 [2020-10-27 23:41:41,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:41:41,189 INFO L481 AbstractCegarLoop]: Abstraction has 5582 states and 8169 transitions. [2020-10-27 23:41:41,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:41:41,189 INFO L276 IsEmpty]: Start isEmpty. Operand 5582 states and 8169 transitions. [2020-10-27 23:41:41,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 23:41:41,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:41:41,191 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] [2020-10-27 23:41:41,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 23:41:41,191 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:41:41,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:41:41,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1495381923, now seen corresponding path program 1 times [2020-10-27 23:41:41,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:41:41,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967608034] [2020-10-27 23:41:41,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:41:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:41:41,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:41,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:41,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:41,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:41,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:41,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:41,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:41,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:41,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:42,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:43,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:43,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:43,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:43,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:46,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:41:46,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 23:41:46,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:41:46,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:41:46,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:41:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 23:41:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:41:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 23:41:46,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:41:46,550 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 23:41:46,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:41:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:41:46,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:46,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:41:46,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:41:46,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:41:46,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:41:46,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:41:46,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:41:46,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:41:46,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:41:46,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:41:46,574 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 23:41:46,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967608034] [2020-10-27 23:41:46,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:41:46,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:41:46,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762155778] [2020-10-27 23:41:46,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:41:46,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:41:46,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:41:46,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:41:46,576 INFO L87 Difference]: Start difference. First operand 5582 states and 8169 transitions. Second operand 11 states. [2020-10-27 23:41:47,127 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 158 [2020-10-27 23:41:48,420 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-27 23:41:48,637 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:41:57,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:41:57,306 INFO L93 Difference]: Finished difference Result 49563 states and 72463 transitions. [2020-10-27 23:41:57,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 23:41:57,306 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-27 23:41:57,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:41:57,388 INFO L225 Difference]: With dead ends: 49563 [2020-10-27 23:41:57,388 INFO L226 Difference]: Without dead ends: 44398 [2020-10-27 23:41:57,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=194, Invalid=862, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 23:41:57,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44398 states. [2020-10-27 23:41:59,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44398 to 11396. [2020-10-27 23:41:59,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11396 states. [2020-10-27 23:41:59,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11396 states to 11396 states and 16708 transitions. [2020-10-27 23:41:59,819 INFO L78 Accepts]: Start accepts. Automaton has 11396 states and 16708 transitions. Word has length 58 [2020-10-27 23:41:59,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:41:59,820 INFO L481 AbstractCegarLoop]: Abstraction has 11396 states and 16708 transitions. [2020-10-27 23:41:59,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:41:59,820 INFO L276 IsEmpty]: Start isEmpty. Operand 11396 states and 16708 transitions. [2020-10-27 23:41:59,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 23:41:59,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:41:59,822 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] [2020-10-27 23:41:59,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 23:41:59,823 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:41:59,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:41:59,823 INFO L82 PathProgramCache]: Analyzing trace with hash -2030087688, now seen corresponding path program 1 times [2020-10-27 23:41:59,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:41:59,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579001138] [2020-10-27 23:41:59,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:41:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:41:59,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:59,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:59,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:00,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:04,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:42:04,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 23:42:04,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 23:42:04,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4338 [2020-10-27 23:42:04,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:42:04,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:42:04,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 23:42:04,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 23:42:04,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:42:04,351 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 23:42:04,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:42:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:42:04,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:04,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:42:04,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:42:04,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:42:04,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:42:04,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:42:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:42:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:42:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:42:04,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:42:04,372 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 23:42:04,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579001138] [2020-10-27 23:42:04,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:42:04,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:42:04,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092327830] [2020-10-27 23:42:04,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:42:04,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:42:04,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:42:04,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:42:04,374 INFO L87 Difference]: Start difference. First operand 11396 states and 16708 transitions. Second operand 6 states. [2020-10-27 23:42:04,557 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:42:04,982 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:42:05,152 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 23:42:07,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:42:07,970 INFO L93 Difference]: Finished difference Result 22023 states and 32387 transitions. [2020-10-27 23:42:07,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 23:42:07,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-27 23:42:07,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:42:07,996 INFO L225 Difference]: With dead ends: 22023 [2020-10-27 23:42:07,996 INFO L226 Difference]: Without dead ends: 15988 [2020-10-27 23:42:08,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:42:08,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15988 states. [2020-10-27 23:42:10,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15988 to 14496. [2020-10-27 23:42:10,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14496 states. [2020-10-27 23:42:10,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14496 states to 14496 states and 21359 transitions. [2020-10-27 23:42:10,850 INFO L78 Accepts]: Start accepts. Automaton has 14496 states and 21359 transitions. Word has length 58 [2020-10-27 23:42:10,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:42:10,850 INFO L481 AbstractCegarLoop]: Abstraction has 14496 states and 21359 transitions. [2020-10-27 23:42:10,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:42:10,850 INFO L276 IsEmpty]: Start isEmpty. Operand 14496 states and 21359 transitions. [2020-10-27 23:42:10,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 23:42:10,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:42:10,853 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] [2020-10-27 23:42:10,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 23:42:10,853 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:42:10,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:42:10,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1477098738, now seen corresponding path program 1 times [2020-10-27 23:42:10,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:42:10,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402427951] [2020-10-27 23:42:10,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:42:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:42:10,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:10,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:10,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:11,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:11,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:12,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:12,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:12,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:12,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:13,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:15,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:42:15,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 23:42:15,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:42:15,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:42:15,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:42:15,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:42:15,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:42:15,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 23:42:15,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:42:16,052 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 23:42:16,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:42:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:42:16,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:16,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:42:16,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:42:16,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:42:16,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:42:16,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:42:16,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:42:16,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:42:16,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:42:16,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:42:16,074 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 23:42:16,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402427951] [2020-10-27 23:42:16,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:42:16,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:42:16,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640776235] [2020-10-27 23:42:16,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:42:16,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:42:16,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:42:16,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:42:16,077 INFO L87 Difference]: Start difference. First operand 14496 states and 21359 transitions. Second operand 6 states. [2020-10-27 23:42:16,256 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-27 23:42:16,884 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-27 23:42:19,512 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 23:42:23,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:42:23,521 INFO L93 Difference]: Finished difference Result 42849 states and 63665 transitions. [2020-10-27 23:42:23,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 23:42:23,521 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-27 23:42:23,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:42:23,570 INFO L225 Difference]: With dead ends: 42849 [2020-10-27 23:42:23,570 INFO L226 Difference]: Without dead ends: 32874 [2020-10-27 23:42:23,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:42:23,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32874 states. [2020-10-27 23:42:26,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32874 to 17760. [2020-10-27 23:42:26,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17760 states. [2020-10-27 23:42:26,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17760 states to 17760 states and 26150 transitions. [2020-10-27 23:42:26,966 INFO L78 Accepts]: Start accepts. Automaton has 17760 states and 26150 transitions. Word has length 58 [2020-10-27 23:42:26,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:42:26,966 INFO L481 AbstractCegarLoop]: Abstraction has 17760 states and 26150 transitions. [2020-10-27 23:42:26,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:42:26,966 INFO L276 IsEmpty]: Start isEmpty. Operand 17760 states and 26150 transitions. [2020-10-27 23:42:26,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 23:42:26,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:42:26,968 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] [2020-10-27 23:42:26,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 23:42:26,969 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:42:26,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:42:26,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1028179788, now seen corresponding path program 1 times [2020-10-27 23:42:26,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:42:26,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927299498] [2020-10-27 23:42:26,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:42:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:42:26,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:27,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:27,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:42:27,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 23:42:27,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:42:27,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-10-27 23:42:27,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:42:27,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 23:42:27,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:42:27,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 23:42:27,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:42:28,030 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 23:42:28,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:42:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:42:28,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:28,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:42:28,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:42:28,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:42:28,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:42:28,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:42:28,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:42:28,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:42:28,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:42:28,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:42:28,055 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 23:42:28,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927299498] [2020-10-27 23:42:28,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:42:28,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:42:28,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794130819] [2020-10-27 23:42:28,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:42:28,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:42:28,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:42:28,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:42:28,057 INFO L87 Difference]: Start difference. First operand 17760 states and 26150 transitions. Second operand 10 states. [2020-10-27 23:42:28,264 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:42:29,244 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 23:42:29,425 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:42:35,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:42:35,007 INFO L93 Difference]: Finished difference Result 31946 states and 47162 transitions. [2020-10-27 23:42:35,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 23:42:35,008 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-27 23:42:35,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:42:35,048 INFO L225 Difference]: With dead ends: 31946 [2020-10-27 23:42:35,048 INFO L226 Difference]: Without dead ends: 27481 [2020-10-27 23:42:35,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:42:35,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27481 states. [2020-10-27 23:42:38,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27481 to 17684. [2020-10-27 23:42:38,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17684 states. [2020-10-27 23:42:38,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17684 states to 17684 states and 26050 transitions. [2020-10-27 23:42:38,911 INFO L78 Accepts]: Start accepts. Automaton has 17684 states and 26050 transitions. Word has length 59 [2020-10-27 23:42:38,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:42:38,912 INFO L481 AbstractCegarLoop]: Abstraction has 17684 states and 26050 transitions. [2020-10-27 23:42:38,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:42:38,912 INFO L276 IsEmpty]: Start isEmpty. Operand 17684 states and 26050 transitions. [2020-10-27 23:42:38,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 23:42:38,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:42:38,913 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] [2020-10-27 23:42:38,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 23:42:38,913 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:42:38,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:42:38,914 INFO L82 PathProgramCache]: Analyzing trace with hash 2056260831, now seen corresponding path program 1 times [2020-10-27 23:42:38,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:42:38,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499137495] [2020-10-27 23:42:38,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:42:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:42:38,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:38,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:38,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:39,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:39,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:39,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:39,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:39,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:39,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:39,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:39,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:39,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:40,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:40,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:40,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:41,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:41,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:41,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:41,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:42,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:42,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:42,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:43,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:42:43,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 23:42:43,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-27 23:42:43,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:42:43,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:42:43,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 23:42:43,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 23:42:43,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 23:42:43,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:42:44,287 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 23:42:44,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:42:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:42:44,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:42:44,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:42:44,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:42:44,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:42:44,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:42:44,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:42:44,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:42:44,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:42:44,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:42:44,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:42:44,307 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 23:42:44,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499137495] [2020-10-27 23:42:44,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:42:44,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:42:44,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65700700] [2020-10-27 23:42:44,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:42:44,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:42:44,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:42:44,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:42:44,309 INFO L87 Difference]: Start difference. First operand 17684 states and 26050 transitions. Second operand 10 states. [2020-10-27 23:42:44,519 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 23:42:45,356 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:42:48,979 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-27 23:43:01,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:43:01,829 INFO L93 Difference]: Finished difference Result 78142 states and 112400 transitions. [2020-10-27 23:43:01,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 23:43:01,830 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-27 23:43:01,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:43:01,914 INFO L225 Difference]: With dead ends: 78142 [2020-10-27 23:43:01,914 INFO L226 Difference]: Without dead ends: 70295 [2020-10-27 23:43:01,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:43:01,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70295 states. [2020-10-27 23:43:06,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70295 to 17684. [2020-10-27 23:43:06,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17684 states. [2020-10-27 23:43:06,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17684 states to 17684 states and 26044 transitions. [2020-10-27 23:43:06,123 INFO L78 Accepts]: Start accepts. Automaton has 17684 states and 26044 transitions. Word has length 59 [2020-10-27 23:43:06,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:43:06,123 INFO L481 AbstractCegarLoop]: Abstraction has 17684 states and 26044 transitions. [2020-10-27 23:43:06,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:43:06,123 INFO L276 IsEmpty]: Start isEmpty. Operand 17684 states and 26044 transitions. [2020-10-27 23:43:06,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 23:43:06,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:43:06,125 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] [2020-10-27 23:43:06,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 23:43:06,125 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:43:06,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:43:06,126 INFO L82 PathProgramCache]: Analyzing trace with hash 93538382, now seen corresponding path program 1 times [2020-10-27 23:43:06,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:43:06,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59052727] [2020-10-27 23:43:06,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:43:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:43:06,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:43:06,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:43:06,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:43:06,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 23:43:06,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:43:06,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 656 [2020-10-27 23:43:06,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:43:06,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:43:06,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:43:06,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 23:43:06,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:43:07,185 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 23:43:07,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:43:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:43:07,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:43:07,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:43:07,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:43:07,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:43:07,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:43:07,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:43:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:43:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:43:07,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:43:07,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:43:07,215 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 23:43:07,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59052727] [2020-10-27 23:43:07,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:43:07,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 23:43:07,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303273811] [2020-10-27 23:43:07,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 23:43:07,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:43:07,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 23:43:07,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 23:43:07,217 INFO L87 Difference]: Start difference. First operand 17684 states and 26044 transitions. Second operand 9 states. [2020-10-27 23:43:07,444 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 23:43:08,463 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 23:43:08,769 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 23:43:16,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:43:16,519 INFO L93 Difference]: Finished difference Result 39445 states and 58186 transitions. [2020-10-27 23:43:16,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 23:43:16,520 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-27 23:43:16,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:43:16,558 INFO L225 Difference]: With dead ends: 39445 [2020-10-27 23:43:16,558 INFO L226 Difference]: Without dead ends: 32740 [2020-10-27 23:43:16,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-10-27 23:43:16,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32740 states. [2020-10-27 23:43:20,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32740 to 17598. [2020-10-27 23:43:20,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17598 states. [2020-10-27 23:43:20,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17598 states to 17598 states and 25926 transitions. [2020-10-27 23:43:20,426 INFO L78 Accepts]: Start accepts. Automaton has 17598 states and 25926 transitions. Word has length 59 [2020-10-27 23:43:20,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:43:20,426 INFO L481 AbstractCegarLoop]: Abstraction has 17598 states and 25926 transitions. [2020-10-27 23:43:20,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 23:43:20,427 INFO L276 IsEmpty]: Start isEmpty. Operand 17598 states and 25926 transitions. [2020-10-27 23:43:20,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 23:43:20,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:43:20,428 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] [2020-10-27 23:43:20,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 23:43:20,428 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:43:20,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:43:20,429 INFO L82 PathProgramCache]: Analyzing trace with hash 573573813, now seen corresponding path program 1 times [2020-10-27 23:43:20,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:43:20,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353038198] [2020-10-27 23:43:20,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:43:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:43:20,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:43:20,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:43:21,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:43:21,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 23:43:21,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:43:21,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-10-27 23:43:21,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:43:21,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 23:43:21,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:43:21,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 23:43:21,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:43:21,465 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 23:43:21,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:43:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:43:21,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:43:21,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:43:21,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:43:21,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:43:21,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:43:21,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:43:21,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:43:21,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:43:21,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:43:21,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:43:21,487 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 23:43:21,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353038198] [2020-10-27 23:43:21,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:43:21,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:43:21,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698631581] [2020-10-27 23:43:21,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:43:21,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:43:21,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:43:21,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:43:21,489 INFO L87 Difference]: Start difference. First operand 17598 states and 25926 transitions. Second operand 10 states. [2020-10-27 23:43:21,802 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:43:22,689 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 23:43:22,884 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 146