/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-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:18:33,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:18:33,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:18:33,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:18:33,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:18:33,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:18:33,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:18:33,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:18:33,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:18:33,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:18:33,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:18:33,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:18:33,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:18:33,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:18:33,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:18:33,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:18:33,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:18:33,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:18:33,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:18:33,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:18:33,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:18:33,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:18:33,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:18:33,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:18:33,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:18:33,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:18:33,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:18:33,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:18:33,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:18:33,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:18:33,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:18:33,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:18:33,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:18:33,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:18:33,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:18:33,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:18:33,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:18:33,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:18:33,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:18:33,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:18:33,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:18:33,639 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 [2020-10-28 00:18:33,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:18:33,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:18:33,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:18:33,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:18:33,667 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:18:33,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:18:33,667 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:18:33,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:18:33,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:18:33,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:18:33,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:18:33,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:18:33,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:18:33,669 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:18:33,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:18:33,669 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:18:33,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:18:33,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:18:33,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:18:33,670 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:18:33,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:18:33,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:18:33,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:18:33,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:18:33,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:18:33,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:18:33,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:18:33,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:18:33,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:18:33,673 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:18:34,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:18:34,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:18:34,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:18:34,069 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:18:34,069 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:18:34,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-28 00:18:34,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34ca39eca/47edbd4ce6dc45fb979c568756534ea1/FLAG8335d6735 [2020-10-28 00:18:34,822 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:18:34,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-28 00:18:34,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34ca39eca/47edbd4ce6dc45fb979c568756534ea1/FLAG8335d6735 [2020-10-28 00:18:35,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34ca39eca/47edbd4ce6dc45fb979c568756534ea1 [2020-10-28 00:18:35,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:18:35,190 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:18:35,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:18:35,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:18:35,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:18:35,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:18:35" (1/1) ... [2020-10-28 00:18:35,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a684b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:35, skipping insertion in model container [2020-10-28 00:18:35,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:18:35" (1/1) ... [2020-10-28 00:18:35,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:18:35,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:18:35,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:18:35,602 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:18:35,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:18:35,757 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:18:35,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:35 WrapperNode [2020-10-28 00:18:35,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:18:35,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:18:35,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:18:35,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:18:35,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:35" (1/1) ... [2020-10-28 00:18:35,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:35" (1/1) ... [2020-10-28 00:18:35,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:35" (1/1) ... [2020-10-28 00:18:35,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:35" (1/1) ... [2020-10-28 00:18:35,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:35" (1/1) ... [2020-10-28 00:18:35,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:35" (1/1) ... [2020-10-28 00:18:35,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:35" (1/1) ... [2020-10-28 00:18:35,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:18:35,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:18:35,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:18:35,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:18:35,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:35" (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 [2020-10-28 00:18:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:18:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:18:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:18:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:18:35,914 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:18:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:18:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:18:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:18:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:18:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:18:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:18:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 00:18:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:18:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:18:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:18:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:18:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:18:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:18:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:18:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:18:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 00:18:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:18:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:18:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:18:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:18:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:18:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:18:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:18:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:18:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:18:37,089 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:18:37,090 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:18:37,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:18:37 BoogieIcfgContainer [2020-10-28 00:18:37,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:18:37,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:18:37,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:18:37,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:18:37,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:18:35" (1/3) ... [2020-10-28 00:18:37,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e23fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:18:37, skipping insertion in model container [2020-10-28 00:18:37,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:35" (2/3) ... [2020-10-28 00:18:37,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e23fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:18:37, skipping insertion in model container [2020-10-28 00:18:37,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:18:37" (3/3) ... [2020-10-28 00:18:37,106 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-28 00:18:37,121 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:18:37,128 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:18:37,145 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:18:37,189 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:18:37,190 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:18:37,190 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:18:37,190 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:18:37,190 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:18:37,190 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:18:37,190 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:18:37,191 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:18:37,218 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2020-10-28 00:18:37,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 00:18:37,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:18:37,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:18:37,235 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:18:37,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:18:37,245 INFO L82 PathProgramCache]: Analyzing trace with hash -2068660907, now seen corresponding path program 1 times [2020-10-28 00:18:37,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:18:37,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819751747] [2020-10-28 00:18:37,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:18:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:18:37,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:37,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:37,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:38,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:39,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:42,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:18:42,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 00:18:42,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:18:42,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 00:18:42,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:18:42,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:18:42,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 00:18:42,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 00:18:42,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:18:43,216 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:18:43,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:18:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:18:43,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:43,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:18:43,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:18:43,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:18:43,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 00:18:43,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:18:43,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:18:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:18:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:18:43,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:18:43,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:18:43,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819751747] [2020-10-28 00:18:43,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:18:43,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:18:43,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632918361] [2020-10-28 00:18:43,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:18:43,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:18:43,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:18:43,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:18:43,336 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 4 states. [2020-10-28 00:18:43,911 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 00:18:44,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:18:44,823 INFO L93 Difference]: Finished difference Result 326 states and 519 transitions. [2020-10-28 00:18:44,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:18:44,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-28 00:18:44,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:18:44,841 INFO L225 Difference]: With dead ends: 326 [2020-10-28 00:18:44,842 INFO L226 Difference]: Without dead ends: 215 [2020-10-28 00:18:44,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:18:44,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-28 00:18:44,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 212. [2020-10-28 00:18:44,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-28 00:18:44,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 314 transitions. [2020-10-28 00:18:44,923 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 314 transitions. Word has length 65 [2020-10-28 00:18:44,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:18:44,924 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 314 transitions. [2020-10-28 00:18:44,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:18:44,925 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 314 transitions. [2020-10-28 00:18:44,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 00:18:44,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:18:44,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:18:44,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:18:44,931 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:18:44,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:18:44,932 INFO L82 PathProgramCache]: Analyzing trace with hash -971713653, now seen corresponding path program 1 times [2020-10-28 00:18:44,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:18:44,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314404937] [2020-10-28 00:18:44,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:18:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:18:45,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:45,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:45,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:45,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:47,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:18:47,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 00:18:47,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 00:18:47,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2087 [2020-10-28 00:18:47,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:18:47,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:18:47,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:18:47,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 00:18:47,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 00:18:47,483 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:18:47,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:18:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:18:47,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:47,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:18:47,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:18:47,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:18:47,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 00:18:47,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:18:47,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:18:47,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:18:47,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:18:47,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:18:47,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:18:47,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314404937] [2020-10-28 00:18:47,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:18:47,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:18:47,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675179567] [2020-10-28 00:18:47,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:18:47,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:18:47,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:18:47,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:18:47,561 INFO L87 Difference]: Start difference. First operand 212 states and 314 transitions. Second operand 4 states. [2020-10-28 00:18:47,878 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 00:18:48,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:18:48,576 INFO L93 Difference]: Finished difference Result 526 states and 812 transitions. [2020-10-28 00:18:48,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:18:48,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-28 00:18:48,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:18:48,588 INFO L225 Difference]: With dead ends: 526 [2020-10-28 00:18:48,588 INFO L226 Difference]: Without dead ends: 353 [2020-10-28 00:18:48,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:18:48,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-28 00:18:48,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 350. [2020-10-28 00:18:48,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-10-28 00:18:48,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 533 transitions. [2020-10-28 00:18:48,645 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 533 transitions. Word has length 66 [2020-10-28 00:18:48,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:18:48,646 INFO L481 AbstractCegarLoop]: Abstraction has 350 states and 533 transitions. [2020-10-28 00:18:48,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:18:48,646 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 533 transitions. [2020-10-28 00:18:48,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 00:18:48,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:18:48,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:18:48,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:18:48,649 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:18:48,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:18:48,650 INFO L82 PathProgramCache]: Analyzing trace with hash -662360852, now seen corresponding path program 1 times [2020-10-28 00:18:48,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:18:48,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876803842] [2020-10-28 00:18:48,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:18:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:18:48,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:48,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:48,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:49,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:18:49,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 00:18:49,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 00:18:49,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-10-28 00:18:49,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:18:49,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:18:49,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 00:18:49,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 00:18:49,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 00:18:50,049 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:18:50,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:18:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:18:50,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:50,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:18:50,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:18:50,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:18:50,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:18:50,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:18:50,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:18:50,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:18:50,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:18:50,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:18:50,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:18:50,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876803842] [2020-10-28 00:18:50,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:18:50,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:18:50,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217116855] [2020-10-28 00:18:50,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:18:50,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:18:50,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:18:50,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:18:50,111 INFO L87 Difference]: Start difference. First operand 350 states and 533 transitions. Second operand 4 states. [2020-10-28 00:18:50,434 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 00:18:51,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:18:51,249 INFO L93 Difference]: Finished difference Result 908 states and 1417 transitions. [2020-10-28 00:18:51,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:18:51,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-28 00:18:51,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:18:51,258 INFO L225 Difference]: With dead ends: 908 [2020-10-28 00:18:51,258 INFO L226 Difference]: Without dead ends: 597 [2020-10-28 00:18:51,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:18:51,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-10-28 00:18:51,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 594. [2020-10-28 00:18:51,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-10-28 00:18:51,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 917 transitions. [2020-10-28 00:18:51,318 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 917 transitions. Word has length 67 [2020-10-28 00:18:51,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:18:51,318 INFO L481 AbstractCegarLoop]: Abstraction has 594 states and 917 transitions. [2020-10-28 00:18:51,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:18:51,318 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 917 transitions. [2020-10-28 00:18:51,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 00:18:51,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:18:51,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:18:51,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:18:51,322 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:18:51,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:18:51,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1156555786, now seen corresponding path program 1 times [2020-10-28 00:18:51,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:18:51,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319526280] [2020-10-28 00:18:51,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:18:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:18:51,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:51,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:51,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:18:51,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 00:18:51,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 00:18:51,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-28 00:18:51,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:18:51,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:18:51,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 00:18:51,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 00:18:51,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:18:52,123 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:18:52,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:18:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:18:52,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:52,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:18:52,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:18:52,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:18:52,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:18:52,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:18:52,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:18:52,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:18:52,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:18:52,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:18:52,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:18:52,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319526280] [2020-10-28 00:18:52,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:18:52,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:18:52,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580461846] [2020-10-28 00:18:52,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:18:52,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:18:52,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:18:52,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:18:52,172 INFO L87 Difference]: Start difference. First operand 594 states and 917 transitions. Second operand 4 states. [2020-10-28 00:18:52,471 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 00:18:53,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:18:53,261 INFO L93 Difference]: Finished difference Result 1576 states and 2465 transitions. [2020-10-28 00:18:53,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:18:53,262 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-28 00:18:53,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:18:53,270 INFO L225 Difference]: With dead ends: 1576 [2020-10-28 00:18:53,270 INFO L226 Difference]: Without dead ends: 1021 [2020-10-28 00:18:53,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:18:53,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2020-10-28 00:18:53,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 1018. [2020-10-28 00:18:53,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2020-10-28 00:18:53,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1577 transitions. [2020-10-28 00:18:53,361 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1577 transitions. Word has length 68 [2020-10-28 00:18:53,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:18:53,363 INFO L481 AbstractCegarLoop]: Abstraction has 1018 states and 1577 transitions. [2020-10-28 00:18:53,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:18:53,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1577 transitions. [2020-10-28 00:18:53,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 00:18:53,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:18:53,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:18:53,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:18:53,371 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:18:53,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:18:53,372 INFO L82 PathProgramCache]: Analyzing trace with hash -292895081, now seen corresponding path program 1 times [2020-10-28 00:18:53,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:18:53,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392604330] [2020-10-28 00:18:53,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:18:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:18:53,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:53,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:54,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:18:54,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 00:18:54,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 00:18:54,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1165 [2020-10-28 00:18:54,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:18:54,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 00:18:54,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 00:18:54,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 00:18:54,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:18:54,945 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:18:54,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:18:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:18:54,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:54,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:18:54,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:18:54,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:18:54,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 00:18:54,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:18:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:18:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:18:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:18:54,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:18:55,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:18:55,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392604330] [2020-10-28 00:18:55,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:18:55,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 00:18:55,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964223198] [2020-10-28 00:18:55,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 00:18:55,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:18:55,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 00:18:55,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:18:55,006 INFO L87 Difference]: Start difference. First operand 1018 states and 1577 transitions. Second operand 8 states. [2020-10-28 00:18:55,369 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-28 00:18:56,552 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 00:18:56,849 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 00:18:57,178 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-28 00:18:57,506 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-28 00:18:57,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:18:57,773 INFO L93 Difference]: Finished difference Result 6892 states and 10805 transitions. [2020-10-28 00:18:57,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 00:18:57,774 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-28 00:18:57,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:18:57,805 INFO L225 Difference]: With dead ends: 6892 [2020-10-28 00:18:57,806 INFO L226 Difference]: Without dead ends: 5913 [2020-10-28 00:18:57,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-28 00:18:57,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5913 states. [2020-10-28 00:18:58,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5913 to 1994. [2020-10-28 00:18:58,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1994 states. [2020-10-28 00:18:58,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 3081 transitions. [2020-10-28 00:18:58,026 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 3081 transitions. Word has length 69 [2020-10-28 00:18:58,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:18:58,026 INFO L481 AbstractCegarLoop]: Abstraction has 1994 states and 3081 transitions. [2020-10-28 00:18:58,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 00:18:58,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 3081 transitions. [2020-10-28 00:18:58,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 00:18:58,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:18:58,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:18:58,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:18:58,029 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:18:58,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:18:58,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1064613524, now seen corresponding path program 1 times [2020-10-28 00:18:58,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:18:58,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229668235] [2020-10-28 00:18:58,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:18:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:18:58,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:58,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:58,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:18:58,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 00:18:58,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 00:18:58,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-10-28 00:18:58,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:18:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:18:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 00:18:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:18:58,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:18:59,021 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:18:59,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:18:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:18:59,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:59,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:18:59,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:18:59,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:18:59,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:18:59,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:18:59,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:18:59,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:18:59,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:18:59,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:18:59,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:18:59,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229668235] [2020-10-28 00:18:59,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:18:59,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:18:59,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139938131] [2020-10-28 00:18:59,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:18:59,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:18:59,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:18:59,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:18:59,060 INFO L87 Difference]: Start difference. First operand 1994 states and 3081 transitions. Second operand 5 states. [2020-10-28 00:19:00,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:19:00,212 INFO L93 Difference]: Finished difference Result 4013 states and 6187 transitions. [2020-10-28 00:19:00,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:19:00,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-28 00:19:00,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:19:00,236 INFO L225 Difference]: With dead ends: 4013 [2020-10-28 00:19:00,236 INFO L226 Difference]: Without dead ends: 4010 [2020-10-28 00:19:00,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:19:00,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2020-10-28 00:19:00,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 2058. [2020-10-28 00:19:00,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2058 states. [2020-10-28 00:19:00,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2058 states to 2058 states and 3145 transitions. [2020-10-28 00:19:00,449 INFO L78 Accepts]: Start accepts. Automaton has 2058 states and 3145 transitions. Word has length 70 [2020-10-28 00:19:00,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:19:00,449 INFO L481 AbstractCegarLoop]: Abstraction has 2058 states and 3145 transitions. [2020-10-28 00:19:00,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:19:00,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2058 states and 3145 transitions. [2020-10-28 00:19:00,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 00:19:00,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:19:00,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:19:00,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:19:00,451 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:19:00,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:19:00,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1654645864, now seen corresponding path program 1 times [2020-10-28 00:19:00,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:19:00,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209246451] [2020-10-28 00:19:00,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:19:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:00,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:00,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:01,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:01,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 00:19:01,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 00:19:01,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 864 [2020-10-28 00:19:01,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:01,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 00:19:01,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 00:19:01,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 00:19:01,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:01,755 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:19:01,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:19:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:01,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:01,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:01,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:19:01,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:19:01,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:19:01,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:01,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:19:01,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:19:01,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:19:01,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:01,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:19:01,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209246451] [2020-10-28 00:19:01,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:19:01,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 00:19:01,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82017856] [2020-10-28 00:19:01,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 00:19:01,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:19:01,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 00:19:01,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:19:01,834 INFO L87 Difference]: Start difference. First operand 2058 states and 3145 transitions. Second operand 8 states. [2020-10-28 00:19:02,925 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-28 00:19:03,233 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 00:19:03,524 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-28 00:19:03,827 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 00:19:04,172 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 00:19:05,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:19:05,733 INFO L93 Difference]: Finished difference Result 10873 states and 16563 transitions. [2020-10-28 00:19:05,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 00:19:05,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-10-28 00:19:05,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:19:05,783 INFO L225 Difference]: With dead ends: 10873 [2020-10-28 00:19:05,783 INFO L226 Difference]: Without dead ends: 8854 [2020-10-28 00:19:05,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-28 00:19:05,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8854 states. [2020-10-28 00:19:06,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8854 to 8842. [2020-10-28 00:19:06,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8842 states. [2020-10-28 00:19:06,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8842 states to 8842 states and 13417 transitions. [2020-10-28 00:19:06,726 INFO L78 Accepts]: Start accepts. Automaton has 8842 states and 13417 transitions. Word has length 71 [2020-10-28 00:19:06,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:19:06,727 INFO L481 AbstractCegarLoop]: Abstraction has 8842 states and 13417 transitions. [2020-10-28 00:19:06,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 00:19:06,727 INFO L276 IsEmpty]: Start isEmpty. Operand 8842 states and 13417 transitions. [2020-10-28 00:19:06,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-28 00:19:06,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:19:06,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:19:06,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:19:06,734 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:19:06,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:19:06,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1696325633, now seen corresponding path program 1 times [2020-10-28 00:19:06,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:19:06,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104180334] [2020-10-28 00:19:06,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:19:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:06,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:06,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:07,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:07,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 00:19:07,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 00:19:07,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-28 00:19:07,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:07,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:19:07,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 00:19:07,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 00:19:07,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:07,792 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:19:07,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:19:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:07,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:07,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:07,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:19:07,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:19:07,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:19:07,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:07,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:19:07,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:19:07,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:19:07,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:19:07,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104180334] [2020-10-28 00:19:07,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:19:07,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:19:07,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796105281] [2020-10-28 00:19:07,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:19:07,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:19:07,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:19:07,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:19:07,863 INFO L87 Difference]: Start difference. First operand 8842 states and 13417 transitions. Second operand 4 states. [2020-10-28 00:19:08,283 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 00:19:10,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:19:10,071 INFO L93 Difference]: Finished difference Result 24608 states and 37181 transitions. [2020-10-28 00:19:10,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:19:10,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-10-28 00:19:10,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:19:10,140 INFO L225 Difference]: With dead ends: 24608 [2020-10-28 00:19:10,140 INFO L226 Difference]: Without dead ends: 15805 [2020-10-28 00:19:10,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:19:10,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15805 states. [2020-10-28 00:19:11,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15805 to 15658. [2020-10-28 00:19:11,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15658 states. [2020-10-28 00:19:11,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15658 states to 15658 states and 23369 transitions. [2020-10-28 00:19:11,453 INFO L78 Accepts]: Start accepts. Automaton has 15658 states and 23369 transitions. Word has length 73 [2020-10-28 00:19:11,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:19:11,453 INFO L481 AbstractCegarLoop]: Abstraction has 15658 states and 23369 transitions. [2020-10-28 00:19:11,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:19:11,453 INFO L276 IsEmpty]: Start isEmpty. Operand 15658 states and 23369 transitions. [2020-10-28 00:19:11,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-28 00:19:11,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:19:11,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:19:11,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:19:11,456 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:19:11,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:19:11,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1647096423, now seen corresponding path program 1 times [2020-10-28 00:19:11,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:19:11,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356530113] [2020-10-28 00:19:11,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:19:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:11,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:11,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:11,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:11,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 00:19:11,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 00:19:11,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-10-28 00:19:11,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:11,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:19:11,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 00:19:11,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 00:19:11,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:19:12,186 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:19:12,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:19:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:12,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:12,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:12,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:19:12,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:19:12,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 00:19:12,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:19:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:19:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:19:12,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:12,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:19:12,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356530113] [2020-10-28 00:19:12,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:19:12,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:19:12,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528722640] [2020-10-28 00:19:12,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:19:12,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:19:12,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:19:12,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:19:12,248 INFO L87 Difference]: Start difference. First operand 15658 states and 23369 transitions. Second operand 4 states. [2020-10-28 00:19:12,618 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 00:19:14,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:19:14,950 INFO L93 Difference]: Finished difference Result 31187 states and 46769 transitions. [2020-10-28 00:19:14,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:19:14,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-10-28 00:19:14,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:19:15,001 INFO L225 Difference]: With dead ends: 31187 [2020-10-28 00:19:15,001 INFO L226 Difference]: Without dead ends: 22383 [2020-10-28 00:19:15,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:19:15,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22383 states. [2020-10-28 00:19:16,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22383 to 22380. [2020-10-28 00:19:16,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22380 states. [2020-10-28 00:19:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22380 states to 22380 states and 33227 transitions. [2020-10-28 00:19:16,529 INFO L78 Accepts]: Start accepts. Automaton has 22380 states and 33227 transitions. Word has length 73 [2020-10-28 00:19:16,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:19:16,529 INFO L481 AbstractCegarLoop]: Abstraction has 22380 states and 33227 transitions. [2020-10-28 00:19:16,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:19:16,529 INFO L276 IsEmpty]: Start isEmpty. Operand 22380 states and 33227 transitions. [2020-10-28 00:19:16,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 00:19:16,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:19:16,547 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:19:16,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:19:16,547 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:19:16,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:19:16,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1628236049, now seen corresponding path program 1 times [2020-10-28 00:19:16,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:19:16,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059775996] [2020-10-28 00:19:16,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:19:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:16,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:16,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:16,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:16,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:17,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:19,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:21,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:21,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 00:19:21,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:19:21,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 00:19:21,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:21,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:19:21,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 00:19:21,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 00:19:21,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:21,921 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:19:21,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:19:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:21,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:21,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:21,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:19:21,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:19:21,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:19:21,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:21,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:19:21,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:19:21,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:19:21,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:21,966 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:19:21,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059775996] [2020-10-28 00:19:21,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:19:21,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:19:21,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382511830] [2020-10-28 00:19:21,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:19:21,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:19:21,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:19:21,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:19:21,969 INFO L87 Difference]: Start difference. First operand 22380 states and 33227 transitions. Second operand 4 states. [2020-10-28 00:19:23,645 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-28 00:19:23,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:19:23,901 INFO L93 Difference]: Finished difference Result 38093 states and 56718 transitions. [2020-10-28 00:19:23,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:19:23,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-28 00:19:23,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:19:23,938 INFO L225 Difference]: With dead ends: 38093 [2020-10-28 00:19:23,938 INFO L226 Difference]: Without dead ends: 15754 [2020-10-28 00:19:23,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:19:23,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15754 states. [2020-10-28 00:19:25,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15754 to 15751. [2020-10-28 00:19:25,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15751 states. [2020-10-28 00:19:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15751 states to 15751 states and 23365 transitions. [2020-10-28 00:19:25,314 INFO L78 Accepts]: Start accepts. Automaton has 15751 states and 23365 transitions. Word has length 99 [2020-10-28 00:19:25,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:19:25,314 INFO L481 AbstractCegarLoop]: Abstraction has 15751 states and 23365 transitions. [2020-10-28 00:19:25,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:19:25,314 INFO L276 IsEmpty]: Start isEmpty. Operand 15751 states and 23365 transitions. [2020-10-28 00:19:25,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 00:19:25,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:19:25,325 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:19:25,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:19:25,325 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:19:25,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:19:25,326 INFO L82 PathProgramCache]: Analyzing trace with hash 2004134663, now seen corresponding path program 1 times [2020-10-28 00:19:25,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:19:25,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195026805] [2020-10-28 00:19:25,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:19:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:25,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:25,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:25,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:25,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 00:19:25,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 00:19:25,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-10-28 00:19:25,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:25,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:19:25,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 00:19:25,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 00:19:25,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:26,359 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:19:26,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:19:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:26,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:26,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:26,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:19:26,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:19:26,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:19:26,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:19:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:19:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:19:26,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 00:19:26,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195026805] [2020-10-28 00:19:26,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 00:19:26,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 00:19:26,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239243358] [2020-10-28 00:19:26,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:19:26,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:19:26,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:19:26,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:19:26,421 INFO L87 Difference]: Start difference. First operand 15751 states and 23365 transitions. Second operand 5 states. [2020-10-28 00:19:26,761 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 00:19:28,149 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 00:19:29,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:19:29,610 INFO L93 Difference]: Finished difference Result 42234 states and 62490 transitions. [2020-10-28 00:19:29,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 00:19:29,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-28 00:19:29,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:19:29,660 INFO L225 Difference]: With dead ends: 42234 [2020-10-28 00:19:29,661 INFO L226 Difference]: Without dead ends: 26711 [2020-10-28 00:19:29,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:19:29,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26711 states. [2020-10-28 00:19:31,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26711 to 26548. [2020-10-28 00:19:31,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26548 states. [2020-10-28 00:19:31,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26548 states to 26548 states and 38774 transitions. [2020-10-28 00:19:31,767 INFO L78 Accepts]: Start accepts. Automaton has 26548 states and 38774 transitions. Word has length 100 [2020-10-28 00:19:31,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:19:31,767 INFO L481 AbstractCegarLoop]: Abstraction has 26548 states and 38774 transitions. [2020-10-28 00:19:31,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:19:31,767 INFO L276 IsEmpty]: Start isEmpty. Operand 26548 states and 38774 transitions. [2020-10-28 00:19:31,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 00:19:31,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:19:31,775 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:19:31,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:19:31,775 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:19:31,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:19:31,776 INFO L82 PathProgramCache]: Analyzing trace with hash -509828707, now seen corresponding path program 1 times [2020-10-28 00:19:31,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:19:31,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705638911] [2020-10-28 00:19:31,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:19:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:31,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:31,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:31,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:32,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:32,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:34,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:36,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:36,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 00:19:36,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:19:36,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 00:19:36,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:19:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 00:19:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 00:19:36,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:37,116 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:19:37,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:19:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:37,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:37,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:37,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:19:37,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:19:37,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 00:19:37,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:37,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:19:37,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:19:37,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:19:37,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:37,205 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:19:37,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705638911] [2020-10-28 00:19:37,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:19:37,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:19:37,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116629499] [2020-10-28 00:19:37,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:19:37,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:19:37,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:19:37,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:19:37,214 INFO L87 Difference]: Start difference. First operand 26548 states and 38774 transitions. Second operand 4 states. [2020-10-28 00:19:37,659 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 00:19:41,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:19:41,094 INFO L93 Difference]: Finished difference Result 67864 states and 99114 transitions. [2020-10-28 00:19:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:19:41,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-28 00:19:41,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:19:41,164 INFO L225 Difference]: With dead ends: 67864 [2020-10-28 00:19:41,164 INFO L226 Difference]: Without dead ends: 46403 [2020-10-28 00:19:41,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:19:41,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46403 states. [2020-10-28 00:19:44,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46403 to 46400. [2020-10-28 00:19:44,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46400 states. [2020-10-28 00:19:44,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46400 states to 46400 states and 67289 transitions. [2020-10-28 00:19:44,960 INFO L78 Accepts]: Start accepts. Automaton has 46400 states and 67289 transitions. Word has length 101 [2020-10-28 00:19:44,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:19:44,960 INFO L481 AbstractCegarLoop]: Abstraction has 46400 states and 67289 transitions. [2020-10-28 00:19:44,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:19:44,960 INFO L276 IsEmpty]: Start isEmpty. Operand 46400 states and 67289 transitions. [2020-10-28 00:19:44,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 00:19:44,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:19:44,971 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:19:44,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:19:44,971 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:19:44,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:19:44,971 INFO L82 PathProgramCache]: Analyzing trace with hash -2107051022, now seen corresponding path program 1 times [2020-10-28 00:19:44,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:19:44,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805786225] [2020-10-28 00:19:44,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:19:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:45,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:45,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:45,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:45,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:45,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:49,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:49,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 00:19:49,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:19:49,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4357 [2020-10-28 00:19:49,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:49,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:19:49,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 00:19:49,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 00:19:49,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:49,661 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:19:49,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:19:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:49,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:49,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:49,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:19:49,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:19:49,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:19:49,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:19:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:19:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:19:49,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:49,697 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:19:49,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805786225] [2020-10-28 00:19:49,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 00:19:49,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 00:19:49,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200404565] [2020-10-28 00:19:49,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:19:49,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:19:49,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:19:49,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:19:49,699 INFO L87 Difference]: Start difference. First operand 46400 states and 67289 transitions. Second operand 6 states. [2020-10-28 00:19:51,264 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 00:19:52,733 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 00:19:54,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:19:54,938 INFO L93 Difference]: Finished difference Result 103959 states and 150000 transitions. [2020-10-28 00:19:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 00:19:54,938 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-28 00:19:54,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:19:55,019 INFO L225 Difference]: With dead ends: 103959 [2020-10-28 00:19:55,019 INFO L226 Difference]: Without dead ends: 57752 [2020-10-28 00:19:55,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:19:55,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57752 states. [2020-10-28 00:19:58,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57752 to 45872. [2020-10-28 00:19:58,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45872 states. [2020-10-28 00:19:58,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45872 states to 45872 states and 65420 transitions. [2020-10-28 00:19:58,963 INFO L78 Accepts]: Start accepts. Automaton has 45872 states and 65420 transitions. Word has length 101 [2020-10-28 00:19:58,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:19:58,963 INFO L481 AbstractCegarLoop]: Abstraction has 45872 states and 65420 transitions. [2020-10-28 00:19:58,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:19:58,963 INFO L276 IsEmpty]: Start isEmpty. Operand 45872 states and 65420 transitions. [2020-10-28 00:19:58,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 00:19:58,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:19:58,971 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:19:58,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 00:19:58,972 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:19:58,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:19:58,972 INFO L82 PathProgramCache]: Analyzing trace with hash 237995869, now seen corresponding path program 1 times [2020-10-28 00:19:58,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:19:58,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846515208] [2020-10-28 00:19:58,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:19:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:59,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:59,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:59,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:59,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:00,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:00,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:00,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:03,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:03,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:03,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 00:20:03,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:20:03,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 00:20:03,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:03,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:20:03,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 00:20:03,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 00:20:03,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:04,284 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:20:04,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:20:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:04,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:04,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:04,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:20:04,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:20:04,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:20:04,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:04,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:20:04,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:20:04,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:20:04,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:04,323 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:20:04,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846515208] [2020-10-28 00:20:04,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:20:04,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:20:04,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871848853] [2020-10-28 00:20:04,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:20:04,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:20:04,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:20:04,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:20:04,325 INFO L87 Difference]: Start difference. First operand 45872 states and 65420 transitions. Second operand 4 states. [2020-10-28 00:20:04,604 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 00:20:10,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:20:10,042 INFO L93 Difference]: Finished difference Result 100561 states and 143253 transitions. [2020-10-28 00:20:10,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:20:10,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-28 00:20:10,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:20:10,126 INFO L225 Difference]: With dead ends: 100561 [2020-10-28 00:20:10,127 INFO L226 Difference]: Without dead ends: 69394 [2020-10-28 00:20:10,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:20:10,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69394 states. [2020-10-28 00:20:15,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69394 to 66343. [2020-10-28 00:20:15,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66343 states. [2020-10-28 00:20:15,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66343 states to 66343 states and 93722 transitions. [2020-10-28 00:20:15,829 INFO L78 Accepts]: Start accepts. Automaton has 66343 states and 93722 transitions. Word has length 101 [2020-10-28 00:20:15,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:20:15,829 INFO L481 AbstractCegarLoop]: Abstraction has 66343 states and 93722 transitions. [2020-10-28 00:20:15,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:20:15,829 INFO L276 IsEmpty]: Start isEmpty. Operand 66343 states and 93722 transitions. [2020-10-28 00:20:15,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 00:20:15,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:20:15,840 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:20:15,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 00:20:15,840 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:20:15,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:20:15,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1650659806, now seen corresponding path program 1 times [2020-10-28 00:20:15,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:20:15,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31481012] [2020-10-28 00:20:15,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:20:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:15,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:15,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:15,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:16,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:16,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:17,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:20,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:20,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 00:20:20,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:20:20,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 00:20:20,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:20,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:20:20,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-28 00:20:20,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 00:20:20,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:21,163 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:20:21,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:20:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:21,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:21,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:21,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:20:21,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:20:21,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:20:21,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:21,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:20:21,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:20:21,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:20:21,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:20:21,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31481012] [2020-10-28 00:20:21,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:20:21,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:20:21,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812846793] [2020-10-28 00:20:21,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:20:21,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:20:21,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:20:21,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:20:21,199 INFO L87 Difference]: Start difference. First operand 66343 states and 93722 transitions. Second operand 4 states. [2020-10-28 00:20:21,605 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 00:20:28,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:20:28,865 INFO L93 Difference]: Finished difference Result 131879 states and 185397 transitions. [2020-10-28 00:20:28,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:20:28,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-28 00:20:28,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:20:28,975 INFO L225 Difference]: With dead ends: 131879 [2020-10-28 00:20:28,975 INFO L226 Difference]: Without dead ends: 91888 [2020-10-28 00:20:29,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:20:29,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91888 states. [2020-10-28 00:20:35,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91888 to 88189. [2020-10-28 00:20:35,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88189 states. [2020-10-28 00:20:36,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88189 states to 88189 states and 122978 transitions. [2020-10-28 00:20:36,091 INFO L78 Accepts]: Start accepts. Automaton has 88189 states and 122978 transitions. Word has length 101 [2020-10-28 00:20:36,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:20:36,092 INFO L481 AbstractCegarLoop]: Abstraction has 88189 states and 122978 transitions. [2020-10-28 00:20:36,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:20:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand 88189 states and 122978 transitions. [2020-10-28 00:20:36,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 00:20:36,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:20:36,290 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:20:36,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 00:20:36,291 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:20:36,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:20:36,293 INFO L82 PathProgramCache]: Analyzing trace with hash -556349067, now seen corresponding path program 1 times [2020-10-28 00:20:36,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:20:36,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015216062] [2020-10-28 00:20:36,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:20:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:36,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:36,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:36,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:37,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:37,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:37,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:41,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:41,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 00:20:41,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:20:41,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 00:20:41,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:41,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:20:41,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 00:20:41,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 00:20:41,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:41,637 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:20:41,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:20:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:41,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:41,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:41,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:20:41,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:20:41,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:20:41,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:41,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:20:41,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:20:41,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:20:41,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:41,671 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:20:41,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015216062] [2020-10-28 00:20:41,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:20:41,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:20:41,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931169583] [2020-10-28 00:20:41,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:20:41,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:20:41,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:20:41,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:20:41,675 INFO L87 Difference]: Start difference. First operand 88189 states and 122978 transitions. Second operand 4 states. [2020-10-28 00:20:41,982 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 00:20:49,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:20:49,805 INFO L93 Difference]: Finished difference Result 138539 states and 191983 transitions. [2020-10-28 00:20:49,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:20:49,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-28 00:20:49,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:20:49,969 INFO L225 Difference]: With dead ends: 138539 [2020-10-28 00:20:49,969 INFO L226 Difference]: Without dead ends: 92009 [2020-10-28 00:20:50,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:20:50,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92009 states. [2020-10-28 00:20:57,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92009 to 88728. [2020-10-28 00:20:57,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88728 states. [2020-10-28 00:20:57,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88728 states to 88728 states and 121845 transitions. [2020-10-28 00:20:57,494 INFO L78 Accepts]: Start accepts. Automaton has 88728 states and 121845 transitions. Word has length 101 [2020-10-28 00:20:57,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:20:57,495 INFO L481 AbstractCegarLoop]: Abstraction has 88728 states and 121845 transitions. [2020-10-28 00:20:57,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:20:57,495 INFO L276 IsEmpty]: Start isEmpty. Operand 88728 states and 121845 transitions. [2020-10-28 00:20:57,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 00:20:57,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:20:57,506 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:20:57,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 00:20:57,507 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:20:57,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:20:57,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1504226338, now seen corresponding path program 1 times [2020-10-28 00:20:57,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:20:57,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933963482] [2020-10-28 00:20:57,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:20:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:57,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:57,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:57,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:57,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:58,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:59,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:59,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 00:20:59,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:20:59,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2253 [2020-10-28 00:20:59,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:59,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:20:59,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 00:20:59,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 00:20:59,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:00,086 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:21:00,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:21:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:00,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:00,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:00,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:21:00,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:21:00,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:21:00,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:00,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:21:00,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:21:00,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:21:00,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:21:00,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933963482] [2020-10-28 00:21:00,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 00:21:00,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 00:21:00,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501661610] [2020-10-28 00:21:00,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:21:00,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:21:00,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:21:00,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:21:00,116 INFO L87 Difference]: Start difference. First operand 88728 states and 121845 transitions. Second operand 6 states. [2020-10-28 00:21:02,256 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 00:21:03,066 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 00:21:17,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:21:17,255 INFO L93 Difference]: Finished difference Result 277647 states and 379630 transitions. [2020-10-28 00:21:17,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:21:17,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-28 00:21:17,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:21:17,707 INFO L225 Difference]: With dead ends: 277647 [2020-10-28 00:21:17,707 INFO L226 Difference]: Without dead ends: 189023 [2020-10-28 00:21:17,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:21:17,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189023 states. [2020-10-28 00:21:27,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189023 to 107269. [2020-10-28 00:21:27,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107269 states. [2020-10-28 00:21:27,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107269 states to 107269 states and 145760 transitions. [2020-10-28 00:21:27,894 INFO L78 Accepts]: Start accepts. Automaton has 107269 states and 145760 transitions. Word has length 101 [2020-10-28 00:21:27,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:21:27,895 INFO L481 AbstractCegarLoop]: Abstraction has 107269 states and 145760 transitions. [2020-10-28 00:21:27,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:21:27,895 INFO L276 IsEmpty]: Start isEmpty. Operand 107269 states and 145760 transitions. [2020-10-28 00:21:27,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 00:21:27,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:21:27,909 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:21:27,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 00:21:27,909 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:21:27,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:21:27,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1976176377, now seen corresponding path program 1 times [2020-10-28 00:21:27,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:21:27,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435484825] [2020-10-28 00:21:27,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:21:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:27,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:27,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:28,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:28,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:28,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:30,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:30,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 00:21:30,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:21:30,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2065 [2020-10-28 00:21:30,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:30,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:21:30,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 00:21:30,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 00:21:30,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:30,299 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:21:30,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:21:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:30,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:30,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:30,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:21:30,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:21:30,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:21:30,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:30,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:21:30,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:21:30,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:21:30,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:30,325 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:21:30,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435484825] [2020-10-28 00:21:30,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 00:21:30,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 00:21:30,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972952010] [2020-10-28 00:21:30,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:21:30,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:21:30,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:21:30,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:21:30,326 INFO L87 Difference]: Start difference. First operand 107269 states and 145760 transitions. Second operand 6 states. [2020-10-28 00:21:32,821 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 00:21:33,757 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 00:21:53,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:21:53,067 INFO L93 Difference]: Finished difference Result 335294 states and 453398 transitions. [2020-10-28 00:21:53,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:21:53,068 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-28 00:21:53,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:21:53,610 INFO L225 Difference]: With dead ends: 335294 [2020-10-28 00:21:53,610 INFO L226 Difference]: Without dead ends: 228223 [2020-10-28 00:21:53,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:21:53,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228223 states. [2020-10-28 00:22:06,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228223 to 134744. [2020-10-28 00:22:06,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134744 states. [2020-10-28 00:22:07,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134744 states to 134744 states and 181132 transitions. [2020-10-28 00:22:07,171 INFO L78 Accepts]: Start accepts. Automaton has 134744 states and 181132 transitions. Word has length 101 [2020-10-28 00:22:07,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:22:07,171 INFO L481 AbstractCegarLoop]: Abstraction has 134744 states and 181132 transitions. [2020-10-28 00:22:07,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:22:07,171 INFO L276 IsEmpty]: Start isEmpty. Operand 134744 states and 181132 transitions. [2020-10-28 00:22:07,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 00:22:07,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:07,194 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:22:07,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 00:22:07,194 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:07,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:07,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1021196628, now seen corresponding path program 1 times [2020-10-28 00:22:07,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:07,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985477936] [2020-10-28 00:22:07,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:07,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:07,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:07,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:07,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:07,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:08,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:08,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking...