/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:59:35,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:59:35,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:59:35,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:59:35,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:59:35,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:59:35,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:59:35,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:59:35,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:59:35,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:59:35,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:59:35,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:59:35,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:59:35,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:59:35,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:59:35,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:59:35,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:59:35,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:59:35,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:59:35,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:59:35,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:59:35,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:59:35,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:59:35,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:59:35,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:59:35,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:59:35,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:59:35,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:59:35,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:59:35,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:59:35,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:59:35,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:59:35,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:59:35,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:59:35,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:59:35,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:59:35,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:59:35,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:59:35,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:59:35,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:59:35,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:59:35,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 12:59:35,863 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:59:35,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:59:35,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:59:35,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:59:35,868 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:59:35,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:59:35,869 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:59:35,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:59:35,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:59:35,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:59:35,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:59:35,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:59:35,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:59:35,871 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:59:35,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:59:35,872 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:59:35,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:59:35,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:59:35,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:59:35,873 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:59:35,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:59:35,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:59:35,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:59:35,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:59:35,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:59:35,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:59:35,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:59:35,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:59:35,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:59:35,874 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:59:36,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:59:36,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:59:36,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:59:36,342 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:59:36,342 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:59:36,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 12:59:36,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69ae38fb5/c2eda81a91384a54b07e17d11ec1f054/FLAGf5b027d13 [2020-10-29 12:59:37,256 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:59:37,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 12:59:37,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69ae38fb5/c2eda81a91384a54b07e17d11ec1f054/FLAGf5b027d13 [2020-10-29 12:59:37,407 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69ae38fb5/c2eda81a91384a54b07e17d11ec1f054 [2020-10-29 12:59:37,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:59:37,420 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:59:37,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:59:37,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:59:37,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:59:37,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:59:37" (1/1) ... [2020-10-29 12:59:37,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ff180f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:37, skipping insertion in model container [2020-10-29 12:59:37,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:59:37" (1/1) ... [2020-10-29 12:59:37,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:59:37,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:59:38,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:59:38,149 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:59:38,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:59:38,527 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:59:38,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:38 WrapperNode [2020-10-29 12:59:38,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:59:38,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:59:38,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:59:38,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:59:38,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:38" (1/1) ... [2020-10-29 12:59:38,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:38" (1/1) ... [2020-10-29 12:59:38,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:38" (1/1) ... [2020-10-29 12:59:38,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:38" (1/1) ... [2020-10-29 12:59:38,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:38" (1/1) ... [2020-10-29 12:59:38,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:38" (1/1) ... [2020-10-29 12:59:38,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:38" (1/1) ... [2020-10-29 12:59:38,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:59:38,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:59:38,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:59:38,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:59:38,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:59:38,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:59:38,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:59:38,727 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:59:38,727 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 12:59:38,728 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:59:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:59:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:59:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:59:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:59:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:59:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 12:59:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:59:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:59:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 12:59:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:59:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:59:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:59:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:59:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:59:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:59:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:59:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:59:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:59:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:59:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:59:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:59:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:59:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:59:40,533 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:59:40,534 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 12:59:40,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:59:40 BoogieIcfgContainer [2020-10-29 12:59:40,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:59:40,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:59:40,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:59:40,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:59:40,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:59:37" (1/3) ... [2020-10-29 12:59:40,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2238f438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:59:40, skipping insertion in model container [2020-10-29 12:59:40,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:59:38" (2/3) ... [2020-10-29 12:59:40,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2238f438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:59:40, skipping insertion in model container [2020-10-29 12:59:40,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:59:40" (3/3) ... [2020-10-29 12:59:40,546 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 12:59:40,559 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:59:40,566 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:59:40,580 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:59:40,613 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:59:40,614 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:59:40,614 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:59:40,614 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:59:40,614 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:59:40,614 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:59:40,614 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:59:40,615 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:59:40,643 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states. [2020-10-29 12:59:40,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-29 12:59:40,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:59:40,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:59:40,662 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:59:40,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:59:40,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1974680425, now seen corresponding path program 1 times [2020-10-29 12:59:40,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:59:40,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645055123] [2020-10-29 12:59:40,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:59:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:59:41,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:41,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:41,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:41,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:42,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:42,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:42,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:42,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:42,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:43,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:43,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:44,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:46,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:59:46,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 12:59:46,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:59:46,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 12:59:46,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:59:46,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:59:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:59:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 12:59:46,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 12:59:46,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:59:46,582 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 12:59:46,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:59:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:59:46,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:46,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:59:46,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:59:46,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:59:46,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 12:59:46,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:59:46,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:59:46,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:59:46,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:59:46,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:59:46,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:59:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:59:46,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645055123] [2020-10-29 12:59:46,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:59:46,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:59:46,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107172604] [2020-10-29 12:59:46,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:59:46,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:59:46,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:59:46,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:59:46,768 INFO L87 Difference]: Start difference. First operand 397 states. Second operand 4 states. [2020-10-29 12:59:47,265 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-29 12:59:50,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:59:50,348 INFO L93 Difference]: Finished difference Result 719 states and 1275 transitions. [2020-10-29 12:59:50,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:59:50,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-10-29 12:59:50,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:59:50,371 INFO L225 Difference]: With dead ends: 719 [2020-10-29 12:59:50,371 INFO L226 Difference]: Without dead ends: 557 [2020-10-29 12:59:50,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:59:50,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2020-10-29 12:59:50,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 554. [2020-10-29 12:59:50,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2020-10-29 12:59:50,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 813 transitions. [2020-10-29 12:59:50,517 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 813 transitions. Word has length 146 [2020-10-29 12:59:50,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:59:50,518 INFO L481 AbstractCegarLoop]: Abstraction has 554 states and 813 transitions. [2020-10-29 12:59:50,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:59:50,518 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 813 transitions. [2020-10-29 12:59:50,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-29 12:59:50,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:59:50,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:59:50,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:59:50,534 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:59:50,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:59:50,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1487993520, now seen corresponding path program 1 times [2020-10-29 12:59:50,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:59:50,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119137059] [2020-10-29 12:59:50,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:59:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:59:50,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:50,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:50,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:50,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:51,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:51,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:51,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:51,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:51,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:52,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:52,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:52,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:54,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:55,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:59:55,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 12:59:55,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 12:59:55,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 12:59:55,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:59:55,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:59:55,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:59:55,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 12:59:55,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 12:59:55,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:59:56,139 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 12:59:56,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:59:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:59:56,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:56,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:59:56,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:59:56,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:59:56,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:59:56,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:59:56,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:59:56,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:59:56,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:59:56,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:59:56,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:59:56,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:59:56,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119137059] [2020-10-29 12:59:56,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:59:56,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:59:56,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702096057] [2020-10-29 12:59:56,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:59:56,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:59:56,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:59:56,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:59:56,240 INFO L87 Difference]: Start difference. First operand 554 states and 813 transitions. Second operand 4 states. [2020-10-29 12:59:56,620 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-29 12:59:58,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:59:58,928 INFO L93 Difference]: Finished difference Result 1112 states and 1684 transitions. [2020-10-29 12:59:58,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:59:58,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-10-29 12:59:58,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:59:58,944 INFO L225 Difference]: With dead ends: 1112 [2020-10-29 12:59:58,944 INFO L226 Difference]: Without dead ends: 895 [2020-10-29 12:59:58,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:59:58,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2020-10-29 12:59:59,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 892. [2020-10-29 12:59:59,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-10-29 12:59:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1329 transitions. [2020-10-29 12:59:59,052 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1329 transitions. Word has length 146 [2020-10-29 12:59:59,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:59:59,054 INFO L481 AbstractCegarLoop]: Abstraction has 892 states and 1329 transitions. [2020-10-29 12:59:59,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:59:59,054 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1329 transitions. [2020-10-29 12:59:59,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-29 12:59:59,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:59:59,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:59:59,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:59:59,060 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:59:59,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:59:59,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1826334626, now seen corresponding path program 1 times [2020-10-29 12:59:59,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:59:59,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993694279] [2020-10-29 12:59:59,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:59:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:59:59,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:59,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:59,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:59,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:59,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:59,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:59,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:59,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:59,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:00,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:00,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:00,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:02,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:04,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:04,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 13:00:04,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:00:04,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-29 13:00:04,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:04,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:04,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:00:04,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 13:00:04,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 13:00:04,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:00:04,643 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:00:04,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:00:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:04,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:04,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:04,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:00:04,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:00:04,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:00:04,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:04,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:04,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:00:04,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:00:04,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:00:04,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:00:04,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:00:04,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993694279] [2020-10-29 13:00:04,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:00:04,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:00:04,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221221722] [2020-10-29 13:00:04,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:00:04,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:00:04,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:00:04,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:00:04,728 INFO L87 Difference]: Start difference. First operand 892 states and 1329 transitions. Second operand 4 states. [2020-10-29 13:00:05,189 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-29 13:00:07,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:00:07,649 INFO L93 Difference]: Finished difference Result 1940 states and 2975 transitions. [2020-10-29 13:00:07,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:00:07,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-10-29 13:00:07,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:00:07,662 INFO L225 Difference]: With dead ends: 1940 [2020-10-29 13:00:07,662 INFO L226 Difference]: Without dead ends: 1575 [2020-10-29 13:00:07,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:00:07,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2020-10-29 13:00:07,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1572. [2020-10-29 13:00:07,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-10-29 13:00:07,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 2365 transitions. [2020-10-29 13:00:07,742 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 2365 transitions. Word has length 146 [2020-10-29 13:00:07,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:00:07,742 INFO L481 AbstractCegarLoop]: Abstraction has 1572 states and 2365 transitions. [2020-10-29 13:00:07,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:00:07,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 2365 transitions. [2020-10-29 13:00:07,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-29 13:00:07,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:00:07,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:00:07,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:00:07,747 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:00:07,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:00:07,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1815837561, now seen corresponding path program 1 times [2020-10-29 13:00:07,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:00:07,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393749768] [2020-10-29 13:00:07,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:00:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:07,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:07,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:08,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:08,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:08,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:08,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:08,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:08,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:08,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:09,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:09,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:11,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:11,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:11,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:12,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:12,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 13:00:12,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:00:12,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:00:12,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:12,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:00:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:00:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 13:00:12,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:00:13,556 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:00:13,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:00:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:13,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:13,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:13,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:00:13,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:00:13,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:00:13,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:13,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:13,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:00:13,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:00:13,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:00:13,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:00:13,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:00:13,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393749768] [2020-10-29 13:00:13,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:00:13,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:00:13,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493900548] [2020-10-29 13:00:13,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:00:13,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:00:13,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:00:13,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:00:13,713 INFO L87 Difference]: Start difference. First operand 1572 states and 2365 transitions. Second operand 5 states. [2020-10-29 13:00:16,558 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 13:00:17,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:00:17,533 INFO L93 Difference]: Finished difference Result 4527 states and 6811 transitions. [2020-10-29 13:00:17,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:00:17,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-29 13:00:17,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:00:17,552 INFO L225 Difference]: With dead ends: 4527 [2020-10-29 13:00:17,552 INFO L226 Difference]: Without dead ends: 3038 [2020-10-29 13:00:17,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:00:17,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2020-10-29 13:00:17,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 3015. [2020-10-29 13:00:17,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3015 states. [2020-10-29 13:00:17,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 4495 transitions. [2020-10-29 13:00:17,802 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 4495 transitions. Word has length 146 [2020-10-29 13:00:17,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:00:17,802 INFO L481 AbstractCegarLoop]: Abstraction has 3015 states and 4495 transitions. [2020-10-29 13:00:17,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:00:17,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 4495 transitions. [2020-10-29 13:00:17,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-29 13:00:17,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:00:17,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:00:17,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:00:17,809 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:00:17,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:00:17,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1671470061, now seen corresponding path program 1 times [2020-10-29 13:00:17,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:00:17,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942520365] [2020-10-29 13:00:17,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:00:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:17,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:17,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:17,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:18,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:18,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:18,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:18,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:18,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:18,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:18,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:18,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:21,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:21,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:21,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:22,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:22,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 13:00:22,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:00:22,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:00:22,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:22,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:22,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:00:22,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:00:22,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 13:00:22,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:00:23,331 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:00:23,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:00:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:23,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:23,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:23,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:00:23,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:00:23,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:00:23,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:23,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:00:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:00:23,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:00:23,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:00:23,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:00:23,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942520365] [2020-10-29 13:00:23,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:00:23,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:00:23,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117471251] [2020-10-29 13:00:23,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:00:23,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:00:23,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:00:23,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:00:23,436 INFO L87 Difference]: Start difference. First operand 3015 states and 4495 transitions. Second operand 5 states. [2020-10-29 13:00:26,067 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 13:00:27,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:00:27,492 INFO L93 Difference]: Finished difference Result 8803 states and 13094 transitions. [2020-10-29 13:00:27,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:00:27,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-29 13:00:27,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:00:27,522 INFO L225 Difference]: With dead ends: 8803 [2020-10-29 13:00:27,522 INFO L226 Difference]: Without dead ends: 5826 [2020-10-29 13:00:27,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:00:27,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5826 states. [2020-10-29 13:00:27,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5826 to 5773. [2020-10-29 13:00:27,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5773 states. [2020-10-29 13:00:27,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5773 states to 5773 states and 8523 transitions. [2020-10-29 13:00:27,887 INFO L78 Accepts]: Start accepts. Automaton has 5773 states and 8523 transitions. Word has length 147 [2020-10-29 13:00:27,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:00:27,888 INFO L481 AbstractCegarLoop]: Abstraction has 5773 states and 8523 transitions. [2020-10-29 13:00:27,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:00:27,888 INFO L276 IsEmpty]: Start isEmpty. Operand 5773 states and 8523 transitions. [2020-10-29 13:00:27,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 13:00:27,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:00:27,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:00:27,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:00:27,899 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:00:27,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:00:27,900 INFO L82 PathProgramCache]: Analyzing trace with hash 658782714, now seen corresponding path program 1 times [2020-10-29 13:00:27,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:00:27,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826947139] [2020-10-29 13:00:27,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:00:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:27,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:27,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:28,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:28,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:28,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:28,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:28,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:28,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:29,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:29,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:30,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:30,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:31,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:31,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:31,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:32,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:32,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 13:00:32,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 13:00:32,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 13:00:32,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:32,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:32,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:00:32,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:00:32,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 13:00:32,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:00:33,418 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:00:33,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:00:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:33,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:33,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:33,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:00:33,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:00:33,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:00:33,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:33,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:33,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:00:33,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:00:33,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:00:33,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:00:33,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:00:33,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826947139] [2020-10-29 13:00:33,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:00:33,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:00:33,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028055694] [2020-10-29 13:00:33,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:00:33,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:00:33,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:00:33,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:00:33,507 INFO L87 Difference]: Start difference. First operand 5773 states and 8523 transitions. Second operand 5 states. [2020-10-29 13:00:36,406 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 13:00:37,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:00:37,920 INFO L93 Difference]: Finished difference Result 15726 states and 23149 transitions. [2020-10-29 13:00:37,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:00:37,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-29 13:00:37,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:00:37,974 INFO L225 Difference]: With dead ends: 15726 [2020-10-29 13:00:37,975 INFO L226 Difference]: Without dead ends: 9964 [2020-10-29 13:00:37,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:00:38,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9964 states. [2020-10-29 13:00:38,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9964 to 9936. [2020-10-29 13:00:38,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9936 states. [2020-10-29 13:00:38,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9936 states to 9936 states and 14462 transitions. [2020-10-29 13:00:38,736 INFO L78 Accepts]: Start accepts. Automaton has 9936 states and 14462 transitions. Word has length 148 [2020-10-29 13:00:38,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:00:38,737 INFO L481 AbstractCegarLoop]: Abstraction has 9936 states and 14462 transitions. [2020-10-29 13:00:38,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:00:38,737 INFO L276 IsEmpty]: Start isEmpty. Operand 9936 states and 14462 transitions. [2020-10-29 13:00:38,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 13:00:38,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:00:38,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:00:38,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:00:38,753 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:00:38,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:00:38,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1578206510, now seen corresponding path program 1 times [2020-10-29 13:00:38,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:00:38,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890097882] [2020-10-29 13:00:38,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:00:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:38,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:38,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:38,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:38,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:38,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:39,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:39,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:39,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:40,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:40,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:42,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:42,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:43,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:43,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 13:00:43,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:00:43,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 13:00:43,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:43,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:00:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:00:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 13:00:43,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:00:44,263 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:00:44,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:00:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:44,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:44,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:44,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:00:44,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:00:44,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:00:44,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:44,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:44,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:00:44,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:00:44,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:00:44,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:00:44,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:00:44,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890097882] [2020-10-29 13:00:44,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:00:44,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:00:44,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437366247] [2020-10-29 13:00:44,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:00:44,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:00:44,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:00:44,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:00:44,362 INFO L87 Difference]: Start difference. First operand 9936 states and 14462 transitions. Second operand 5 states. [2020-10-29 13:00:47,136 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 13:00:48,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:00:48,268 INFO L93 Difference]: Finished difference Result 26831 states and 38886 transitions. [2020-10-29 13:00:48,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:00:48,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-29 13:00:48,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:00:48,324 INFO L225 Difference]: With dead ends: 26831 [2020-10-29 13:00:48,324 INFO L226 Difference]: Without dead ends: 16956 [2020-10-29 13:00:48,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:00:48,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16956 states. [2020-10-29 13:00:49,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16956 to 16888. [2020-10-29 13:00:49,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16888 states. [2020-10-29 13:00:49,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16888 states to 16888 states and 24192 transitions. [2020-10-29 13:00:49,513 INFO L78 Accepts]: Start accepts. Automaton has 16888 states and 24192 transitions. Word has length 149 [2020-10-29 13:00:49,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:00:49,514 INFO L481 AbstractCegarLoop]: Abstraction has 16888 states and 24192 transitions. [2020-10-29 13:00:49,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:00:49,514 INFO L276 IsEmpty]: Start isEmpty. Operand 16888 states and 24192 transitions. [2020-10-29 13:00:49,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-29 13:00:49,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:00:49,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:00:49,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:00:49,540 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:00:49,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:00:49,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1812616325, now seen corresponding path program 1 times [2020-10-29 13:00:49,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:00:49,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859288012] [2020-10-29 13:00:49,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:00:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:49,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:49,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:49,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:49,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:49,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:49,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:52,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:52,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:53,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:54,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:54,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 13:00:54,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:00:54,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 13:00:54,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:54,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:00:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:00:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 13:00:54,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:00:55,077 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:00:55,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:00:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:55,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:55,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:55,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:00:55,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:00:55,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:00:55,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:55,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:55,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:00:55,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:00:55,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:00:55,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:00:55,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:00:55,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859288012] [2020-10-29 13:00:55,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:00:55,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:00:55,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325833809] [2020-10-29 13:00:55,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:00:55,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:00:55,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:00:55,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:00:55,182 INFO L87 Difference]: Start difference. First operand 16888 states and 24192 transitions. Second operand 5 states. [2020-10-29 13:00:58,556 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 13:01:00,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:01:00,223 INFO L93 Difference]: Finished difference Result 48401 states and 69329 transitions. [2020-10-29 13:01:00,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:01:00,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-29 13:01:00,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:01:00,297 INFO L225 Difference]: With dead ends: 48401 [2020-10-29 13:01:00,298 INFO L226 Difference]: Without dead ends: 32612 [2020-10-29 13:01:00,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:01:00,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32612 states. [2020-10-29 13:01:02,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32612 to 32544. [2020-10-29 13:01:02,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32544 states. [2020-10-29 13:01:02,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32544 states to 32544 states and 45973 transitions. [2020-10-29 13:01:02,290 INFO L78 Accepts]: Start accepts. Automaton has 32544 states and 45973 transitions. Word has length 150 [2020-10-29 13:01:02,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:01:02,290 INFO L481 AbstractCegarLoop]: Abstraction has 32544 states and 45973 transitions. [2020-10-29 13:01:02,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:01:02,290 INFO L276 IsEmpty]: Start isEmpty. Operand 32544 states and 45973 transitions. [2020-10-29 13:01:02,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-29 13:01:02,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:01:02,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:01:02,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:01:02,339 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:01:02,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:01:02,339 INFO L82 PathProgramCache]: Analyzing trace with hash -959711469, now seen corresponding path program 1 times [2020-10-29 13:01:02,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:01:02,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622822008] [2020-10-29 13:01:02,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:01:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:02,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:02,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:02,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:02,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:02,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:02,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:04,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:04,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:07,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:07,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 13:01:07,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:01:07,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:01:07,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:07,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:07,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:01:07,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:01:07,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 13:01:07,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:07,854 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:01:07,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:01:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:07,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:07,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:07,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:01:07,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:01:07,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:01:07,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:07,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:07,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:01:07,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:01:07,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:01:07,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:07,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:01:07,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622822008] [2020-10-29 13:01:07,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:01:07,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:01:07,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498270141] [2020-10-29 13:01:07,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:01:07,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:01:07,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:01:07,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:01:07,914 INFO L87 Difference]: Start difference. First operand 32544 states and 45973 transitions. Second operand 5 states. [2020-10-29 13:01:12,322 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 13:01:15,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:01:15,595 INFO L93 Difference]: Finished difference Result 86973 states and 122312 transitions. [2020-10-29 13:01:15,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:01:15,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-29 13:01:15,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:01:15,722 INFO L225 Difference]: With dead ends: 86973 [2020-10-29 13:01:15,723 INFO L226 Difference]: Without dead ends: 55241 [2020-10-29 13:01:15,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:01:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55241 states. [2020-10-29 13:01:19,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55241 to 55173. [2020-10-29 13:01:19,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55173 states. [2020-10-29 13:01:20,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55173 states to 55173 states and 76370 transitions. [2020-10-29 13:01:20,009 INFO L78 Accepts]: Start accepts. Automaton has 55173 states and 76370 transitions. Word has length 151 [2020-10-29 13:01:20,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:01:20,009 INFO L481 AbstractCegarLoop]: Abstraction has 55173 states and 76370 transitions. [2020-10-29 13:01:20,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:01:20,009 INFO L276 IsEmpty]: Start isEmpty. Operand 55173 states and 76370 transitions. [2020-10-29 13:01:20,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-29 13:01:20,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:01:20,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:01:20,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:01:20,221 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:01:20,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:01:20,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1271055644, now seen corresponding path program 1 times [2020-10-29 13:01:20,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:01:20,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767760468] [2020-10-29 13:01:20,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:01:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:20,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:20,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:20,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:20,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:20,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:20,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:25,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:25,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 13:01:25,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:01:25,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:01:25,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:25,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:01:25,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 13:01:25,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 13:01:25,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:25,765 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:01:25,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:01:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:25,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:25,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:25,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:01:25,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:01:25,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:01:25,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:25,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:25,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:01:25,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:01:25,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:01:25,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:25,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:01:25,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767760468] [2020-10-29 13:01:25,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:01:25,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:01:25,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573583862] [2020-10-29 13:01:25,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:01:25,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:01:25,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:01:25,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:01:25,821 INFO L87 Difference]: Start difference. First operand 55173 states and 76370 transitions. Second operand 5 states. [2020-10-29 13:01:30,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:01:30,295 INFO L93 Difference]: Finished difference Result 96763 states and 134038 transitions. [2020-10-29 13:01:30,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:01:30,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-29 13:01:30,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:01:30,383 INFO L225 Difference]: With dead ends: 96763 [2020-10-29 13:01:30,383 INFO L226 Difference]: Without dead ends: 41691 [2020-10-29 13:01:30,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:01:30,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41691 states. [2020-10-29 13:01:33,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41691 to 41690. [2020-10-29 13:01:33,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41690 states. [2020-10-29 13:01:33,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41690 states to 41690 states and 57800 transitions. [2020-10-29 13:01:33,689 INFO L78 Accepts]: Start accepts. Automaton has 41690 states and 57800 transitions. Word has length 152 [2020-10-29 13:01:33,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:01:33,689 INFO L481 AbstractCegarLoop]: Abstraction has 41690 states and 57800 transitions. [2020-10-29 13:01:33,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:01:33,690 INFO L276 IsEmpty]: Start isEmpty. Operand 41690 states and 57800 transitions. [2020-10-29 13:01:33,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 13:01:33,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:01:33,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:01:33,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:01:33,716 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:01:33,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:01:33,716 INFO L82 PathProgramCache]: Analyzing trace with hash 372874972, now seen corresponding path program 1 times [2020-10-29 13:01:33,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:01:33,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778801362] [2020-10-29 13:01:33,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:01:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:33,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:33,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:33,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:33,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:33,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:34,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:38,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:38,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 13:01:38,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:01:38,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 13:01:38,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:38,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:38,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:01:38,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:01:38,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 13:01:38,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:39,258 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:01:39,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:01:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:39,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:39,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:39,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:01:39,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:01:39,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 13:01:39,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:39,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:39,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:01:39,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:01:39,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:01:39,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:39,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:01:39,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778801362] [2020-10-29 13:01:39,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:01:39,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:01:39,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99328324] [2020-10-29 13:01:39,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:01:39,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:01:39,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:01:39,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:01:39,342 INFO L87 Difference]: Start difference. First operand 41690 states and 57800 transitions. Second operand 6 states. [2020-10-29 13:01:39,867 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 13:01:43,451 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-29 13:01:47,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:01:47,040 INFO L93 Difference]: Finished difference Result 94950 states and 132836 transitions. [2020-10-29 13:01:47,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:01:47,040 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-10-29 13:01:47,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:01:47,295 INFO L225 Difference]: With dead ends: 94950 [2020-10-29 13:01:47,295 INFO L226 Difference]: Without dead ends: 55246 [2020-10-29 13:01:47,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:01:47,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55246 states. [2020-10-29 13:01:51,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55246 to 55238. [2020-10-29 13:01:51,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55238 states. [2020-10-29 13:01:51,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55238 states to 55238 states and 76664 transitions. [2020-10-29 13:01:51,631 INFO L78 Accepts]: Start accepts. Automaton has 55238 states and 76664 transitions. Word has length 160 [2020-10-29 13:01:51,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:01:51,632 INFO L481 AbstractCegarLoop]: Abstraction has 55238 states and 76664 transitions. [2020-10-29 13:01:51,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:01:51,632 INFO L276 IsEmpty]: Start isEmpty. Operand 55238 states and 76664 transitions. [2020-10-29 13:01:51,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 13:01:51,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:01:51,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:01:51,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:01:51,668 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:01:51,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:01:51,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1418656518, now seen corresponding path program 1 times [2020-10-29 13:01:51,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:01:51,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476580311] [2020-10-29 13:01:51,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:01:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:51,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:51,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:51,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:51,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:51,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:55,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:56,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:56,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 13:01:56,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:01:56,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 13:01:56,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:56,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:56,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 13:01:56,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 13:01:56,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 13:01:56,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:01:57,724 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:01:57,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:01:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:57,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:57,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:57,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:01:57,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:01:57,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:01:57,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:57,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:57,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:01:57,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:01:57,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:01:57,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:57,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:01:57,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476580311] [2020-10-29 13:01:57,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:01:57,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 13:01:57,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756830497] [2020-10-29 13:01:57,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 13:01:57,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:01:57,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 13:01:57,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-29 13:01:57,818 INFO L87 Difference]: Start difference. First operand 55238 states and 76664 transitions. Second operand 12 states. [2020-10-29 13:01:58,929 WARN L193 SmtUtils]: Spent 974.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 239 [2020-10-29 13:02:05,159 WARN L193 SmtUtils]: Spent 4.27 s on a formula simplification that was a NOOP. DAG size: 32 [2020-10-29 13:02:07,455 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2020-10-29 13:02:10,357 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2020-10-29 13:02:22,738 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-29 13:02:23,267 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-29 13:02:24,262 WARN L193 SmtUtils]: Spent 923.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 227 [2020-10-29 13:02:41,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:02:41,038 INFO L93 Difference]: Finished difference Result 145633 states and 210257 transitions. [2020-10-29 13:02:41,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:02:41,040 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 160 [2020-10-29 13:02:41,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:02:41,229 INFO L225 Difference]: With dead ends: 145633 [2020-10-29 13:02:41,229 INFO L226 Difference]: Without dead ends: 123069 [2020-10-29 13:02:41,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2020-10-29 13:02:41,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123069 states. [2020-10-29 13:02:47,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123069 to 63302. [2020-10-29 13:02:47,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63302 states. [2020-10-29 13:02:47,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63302 states to 63302 states and 86144 transitions. [2020-10-29 13:02:47,659 INFO L78 Accepts]: Start accepts. Automaton has 63302 states and 86144 transitions. Word has length 160 [2020-10-29 13:02:47,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:02:47,660 INFO L481 AbstractCegarLoop]: Abstraction has 63302 states and 86144 transitions. [2020-10-29 13:02:47,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 13:02:47,660 INFO L276 IsEmpty]: Start isEmpty. Operand 63302 states and 86144 transitions. [2020-10-29 13:02:47,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 13:02:47,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:02:47,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:02:47,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:02:47,699 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:02:47,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:02:47,700 INFO L82 PathProgramCache]: Analyzing trace with hash 2118989517, now seen corresponding path program 1 times [2020-10-29 13:02:47,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:02:47,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015214602] [2020-10-29 13:02:47,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:02:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:47,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:47,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:47,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:47,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:48,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:52,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:52,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 13:02:52,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:02:52,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 13:02:52,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:52,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:52,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:02:52,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 13:02:52,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 13:02:52,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:53,276 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:02:53,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:02:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:53,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:53,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:53,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:02:53,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:02:53,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:02:53,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:53,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:02:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:02:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:02:53,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:53,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:02:53,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015214602] [2020-10-29 13:02:53,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:02:53,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:02:53,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649095943] [2020-10-29 13:02:53,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:02:53,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:02:53,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:02:53,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:02:53,325 INFO L87 Difference]: Start difference. First operand 63302 states and 86144 transitions. Second operand 5 states. [2020-10-29 13:03:00,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:03:00,709 INFO L93 Difference]: Finished difference Result 118762 states and 161861 transitions. [2020-10-29 13:03:00,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:03:00,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-29 13:03:00,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:03:00,782 INFO L225 Difference]: With dead ends: 118762 [2020-10-29 13:03:00,783 INFO L226 Difference]: Without dead ends: 56313 [2020-10-29 13:03:00,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:03:00,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56313 states. [2020-10-29 13:03:05,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56313 to 56305. [2020-10-29 13:03:05,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56305 states. [2020-10-29 13:03:06,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56305 states to 56305 states and 76668 transitions. [2020-10-29 13:03:06,035 INFO L78 Accepts]: Start accepts. Automaton has 56305 states and 76668 transitions. Word has length 160 [2020-10-29 13:03:06,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:03:06,036 INFO L481 AbstractCegarLoop]: Abstraction has 56305 states and 76668 transitions. [2020-10-29 13:03:06,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:03:06,036 INFO L276 IsEmpty]: Start isEmpty. Operand 56305 states and 76668 transitions. [2020-10-29 13:03:06,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-29 13:03:06,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:03:06,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:03:06,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:03:06,063 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:03:06,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:03:06,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1692254337, now seen corresponding path program 1 times [2020-10-29 13:03:06,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:03:06,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396833282] [2020-10-29 13:03:06,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:03:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:06,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:06,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:06,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:06,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking...