./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 30f0768bbff34913c5dfb0ad37a2819c04e85c489714efe7283dacc3cb1675b9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:45:21,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:45:21,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:45:21,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:45:21,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:45:21,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:45:21,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:45:21,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:45:21,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:45:21,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:45:21,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:45:21,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:45:21,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:45:21,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:45:21,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:45:21,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:45:21,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:45:21,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:45:21,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:45:21,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:45:21,688 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:45:21,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:45:21,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:45:21,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:45:21,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:45:21,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:45:21,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:45:21,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:45:21,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:45:21,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:45:21,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:45:21,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:45:21,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:45:21,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:45:21,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:45:21,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:45:21,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:45:21,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:45:21,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:45:21,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:45:21,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:45:21,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:45:21,703 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:45:21,721 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:45:21,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:45:21,722 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:45:21,722 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:45:21,723 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:45:21,723 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:45:21,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:45:21,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:45:21,724 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:45:21,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:45:21,725 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:45:21,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:45:21,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:45:21,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:45:21,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:45:21,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:45:21,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:45:21,726 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:45:21,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:45:21,726 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:45:21,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:45:21,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:45:21,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:45:21,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:45:21,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:45:21,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:45:21,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:45:21,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:45:21,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:45:21,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:45:21,729 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:45:21,729 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:45:21,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:45:21,729 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30f0768bbff34913c5dfb0ad37a2819c04e85c489714efe7283dacc3cb1675b9 [2022-07-22 18:45:21,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:45:21,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:45:21,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:45:21,975 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:45:21,975 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:45:21,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-22 18:45:22,035 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a2a4ad0a/3f907b6f7f7f4a30b92d66e38e924152/FLAG9b7d9112a [2022-07-22 18:45:22,494 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:45:22,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-22 18:45:22,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a2a4ad0a/3f907b6f7f7f4a30b92d66e38e924152/FLAG9b7d9112a [2022-07-22 18:45:22,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a2a4ad0a/3f907b6f7f7f4a30b92d66e38e924152 [2022-07-22 18:45:22,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:45:22,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:45:22,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:45:22,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:45:22,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:45:22,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:45:22" (1/1) ... [2022-07-22 18:45:22,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30e0975f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:45:22, skipping insertion in model container [2022-07-22 18:45:22,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:45:22" (1/1) ... [2022-07-22 18:45:22,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:45:22,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:45:22,814 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9094,9107] [2022-07-22 18:45:22,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:45:22,863 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:45:22,925 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9094,9107] [2022-07-22 18:45:22,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:45:22,979 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:45:22,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:45:22 WrapperNode [2022-07-22 18:45:22,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:45:22,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:45:22,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:45:22,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:45:22,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:45:22" (1/1) ... [2022-07-22 18:45:23,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:45:22" (1/1) ... [2022-07-22 18:45:23,037 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 731 [2022-07-22 18:45:23,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:45:23,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:45:23,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:45:23,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:45:23,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:45:22" (1/1) ... [2022-07-22 18:45:23,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:45:22" (1/1) ... [2022-07-22 18:45:23,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:45:22" (1/1) ... [2022-07-22 18:45:23,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:45:22" (1/1) ... [2022-07-22 18:45:23,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:45:22" (1/1) ... [2022-07-22 18:45:23,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:45:22" (1/1) ... [2022-07-22 18:45:23,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:45:22" (1/1) ... [2022-07-22 18:45:23,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:45:23,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:45:23,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:45:23,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:45:23,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:45:22" (1/1) ... [2022-07-22 18:45:23,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:45:23,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:45:23,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 18:45:23,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 18:45:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:45:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:45:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:45:23,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:45:23,235 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:45:23,236 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:45:23,840 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:45:23,852 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:45:23,852 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 18:45:23,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:45:23 BoogieIcfgContainer [2022-07-22 18:45:23,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:45:23,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:45:23,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:45:23,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:45:23,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:45:22" (1/3) ... [2022-07-22 18:45:23,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1ec9d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:45:23, skipping insertion in model container [2022-07-22 18:45:23,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:45:22" (2/3) ... [2022-07-22 18:45:23,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1ec9d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:45:23, skipping insertion in model container [2022-07-22 18:45:23,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:45:23" (3/3) ... [2022-07-22 18:45:23,864 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-22 18:45:23,878 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:45:23,878 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:45:23,935 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:45:23,941 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@78e270cf, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@64459aee [2022-07-22 18:45:23,941 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:45:23,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 175 states have (on average 1.76) internal successors, (308), 176 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:23,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 18:45:23,961 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:23,962 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:23,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:23,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:23,974 INFO L85 PathProgramCache]: Analyzing trace with hash -822713823, now seen corresponding path program 1 times [2022-07-22 18:45:23,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:23,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101061257] [2022-07-22 18:45:23,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:23,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:24,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:24,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101061257] [2022-07-22 18:45:24,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101061257] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:24,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:24,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:45:24,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671162750] [2022-07-22 18:45:24,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:24,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:45:24,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:24,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:45:24,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:45:24,537 INFO L87 Difference]: Start difference. First operand has 177 states, 175 states have (on average 1.76) internal successors, (308), 176 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:25,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:25,075 INFO L93 Difference]: Finished difference Result 1131 states and 1831 transitions. [2022-07-22 18:45:25,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 18:45:25,078 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-07-22 18:45:25,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:25,100 INFO L225 Difference]: With dead ends: 1131 [2022-07-22 18:45:25,101 INFO L226 Difference]: Without dead ends: 1036 [2022-07-22 18:45:25,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-07-22 18:45:25,108 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 2265 mSDsluCounter, 2485 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2265 SdHoareTripleChecker+Valid, 3100 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:25,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2265 Valid, 3100 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:45:25,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2022-07-22 18:45:25,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 269. [2022-07-22 18:45:25,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.458955223880597) internal successors, (391), 268 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:25,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 391 transitions. [2022-07-22 18:45:25,191 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 391 transitions. Word has length 90 [2022-07-22 18:45:25,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:25,192 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 391 transitions. [2022-07-22 18:45:25,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:25,193 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 391 transitions. [2022-07-22 18:45:25,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:45:25,200 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:25,200 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:25,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:45:25,200 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:25,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:25,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1483332975, now seen corresponding path program 1 times [2022-07-22 18:45:25,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:25,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747191356] [2022-07-22 18:45:25,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:25,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:25,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:25,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:25,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747191356] [2022-07-22 18:45:25,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747191356] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:25,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:25,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:45:25,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667495224] [2022-07-22 18:45:25,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:25,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:45:25,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:25,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:45:25,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:45:25,403 INFO L87 Difference]: Start difference. First operand 269 states and 391 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:25,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:25,694 INFO L93 Difference]: Finished difference Result 1235 states and 1925 transitions. [2022-07-22 18:45:25,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:45:25,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-22 18:45:25,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:25,701 INFO L225 Difference]: With dead ends: 1235 [2022-07-22 18:45:25,702 INFO L226 Difference]: Without dead ends: 1095 [2022-07-22 18:45:25,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:45:25,708 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 1605 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:25,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 1854 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:45:25,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2022-07-22 18:45:25,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 428. [2022-07-22 18:45:25,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.5105386416861826) internal successors, (645), 427 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:25,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 645 transitions. [2022-07-22 18:45:25,763 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 645 transitions. Word has length 92 [2022-07-22 18:45:25,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:25,764 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 645 transitions. [2022-07-22 18:45:25,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:25,764 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 645 transitions. [2022-07-22 18:45:25,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:45:25,765 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:25,765 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:25,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:45:25,766 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:25,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:25,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1617802447, now seen corresponding path program 1 times [2022-07-22 18:45:25,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:25,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100298789] [2022-07-22 18:45:25,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:25,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:25,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:25,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:25,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100298789] [2022-07-22 18:45:25,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100298789] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:25,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:25,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:45:25,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674617635] [2022-07-22 18:45:25,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:25,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:45:25,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:25,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:45:25,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:45:25,950 INFO L87 Difference]: Start difference. First operand 428 states and 645 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:26,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:26,244 INFO L93 Difference]: Finished difference Result 1389 states and 2171 transitions. [2022-07-22 18:45:26,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:45:26,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-22 18:45:26,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:26,252 INFO L225 Difference]: With dead ends: 1389 [2022-07-22 18:45:26,252 INFO L226 Difference]: Without dead ends: 1249 [2022-07-22 18:45:26,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:45:26,255 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1908 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1908 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:26,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1908 Valid, 1591 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:45:26,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2022-07-22 18:45:26,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 641. [2022-07-22 18:45:26,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 1.5390625) internal successors, (985), 640 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:26,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 985 transitions. [2022-07-22 18:45:26,340 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 985 transitions. Word has length 92 [2022-07-22 18:45:26,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:26,340 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 985 transitions. [2022-07-22 18:45:26,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:26,341 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 985 transitions. [2022-07-22 18:45:26,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:45:26,342 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:26,342 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:26,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:45:26,342 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:26,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:26,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1906062023, now seen corresponding path program 1 times [2022-07-22 18:45:26,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:26,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274320688] [2022-07-22 18:45:26,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:26,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:26,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:26,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:26,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274320688] [2022-07-22 18:45:26,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274320688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:26,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:26,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:45:26,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710036610] [2022-07-22 18:45:26,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:26,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:45:26,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:26,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:45:26,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:45:26,444 INFO L87 Difference]: Start difference. First operand 641 states and 985 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:26,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:26,744 INFO L93 Difference]: Finished difference Result 1528 states and 2393 transitions. [2022-07-22 18:45:26,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:45:26,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-22 18:45:26,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:26,752 INFO L225 Difference]: With dead ends: 1528 [2022-07-22 18:45:26,752 INFO L226 Difference]: Without dead ends: 1388 [2022-07-22 18:45:26,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:45:26,760 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 2019 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:26,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2019 Valid, 1591 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:45:26,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2022-07-22 18:45:26,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 780. [2022-07-22 18:45:26,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 1.5494223363286264) internal successors, (1207), 779 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:26,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1207 transitions. [2022-07-22 18:45:26,851 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1207 transitions. Word has length 92 [2022-07-22 18:45:26,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:26,851 INFO L495 AbstractCegarLoop]: Abstraction has 780 states and 1207 transitions. [2022-07-22 18:45:26,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:26,852 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1207 transitions. [2022-07-22 18:45:26,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:45:26,852 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:26,853 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:26,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:45:26,853 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:26,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:26,854 INFO L85 PathProgramCache]: Analyzing trace with hash 614894983, now seen corresponding path program 1 times [2022-07-22 18:45:26,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:26,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395582493] [2022-07-22 18:45:26,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:26,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:26,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:26,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395582493] [2022-07-22 18:45:26,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395582493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:26,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:26,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:45:26,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348910699] [2022-07-22 18:45:26,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:26,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:45:26,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:26,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:45:26,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:45:26,909 INFO L87 Difference]: Start difference. First operand 780 states and 1207 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:27,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:27,100 INFO L93 Difference]: Finished difference Result 1968 states and 3097 transitions. [2022-07-22 18:45:27,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:45:27,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-22 18:45:27,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:27,106 INFO L225 Difference]: With dead ends: 1968 [2022-07-22 18:45:27,106 INFO L226 Difference]: Without dead ends: 1345 [2022-07-22 18:45:27,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:45:27,108 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 99 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:27,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 559 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:45:27,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2022-07-22 18:45:27,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1325. [2022-07-22 18:45:27,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1324 states have (on average 1.5521148036253776) internal successors, (2055), 1324 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:27,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 2055 transitions. [2022-07-22 18:45:27,272 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 2055 transitions. Word has length 92 [2022-07-22 18:45:27,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:27,273 INFO L495 AbstractCegarLoop]: Abstraction has 1325 states and 2055 transitions. [2022-07-22 18:45:27,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:27,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 2055 transitions. [2022-07-22 18:45:27,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:45:27,277 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:27,277 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:27,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:45:27,278 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:27,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:27,278 INFO L85 PathProgramCache]: Analyzing trace with hash 858972646, now seen corresponding path program 1 times [2022-07-22 18:45:27,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:27,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536235981] [2022-07-22 18:45:27,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:27,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:27,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:27,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:27,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536235981] [2022-07-22 18:45:27,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536235981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:27,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:27,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:45:27,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595033921] [2022-07-22 18:45:27,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:27,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:45:27,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:27,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:45:27,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:45:27,361 INFO L87 Difference]: Start difference. First operand 1325 states and 2055 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:27,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:27,531 INFO L93 Difference]: Finished difference Result 2495 states and 3900 transitions. [2022-07-22 18:45:27,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:45:27,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-22 18:45:27,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:27,537 INFO L225 Difference]: With dead ends: 2495 [2022-07-22 18:45:27,537 INFO L226 Difference]: Without dead ends: 1327 [2022-07-22 18:45:27,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:45:27,540 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 125 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:27,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 541 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:45:27,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2022-07-22 18:45:27,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1325. [2022-07-22 18:45:27,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1324 states have (on average 1.5483383685800605) internal successors, (2050), 1324 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:27,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 2050 transitions. [2022-07-22 18:45:27,686 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 2050 transitions. Word has length 92 [2022-07-22 18:45:27,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:27,686 INFO L495 AbstractCegarLoop]: Abstraction has 1325 states and 2050 transitions. [2022-07-22 18:45:27,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:27,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 2050 transitions. [2022-07-22 18:45:27,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:45:27,688 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:27,688 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:27,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:45:27,688 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:27,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:27,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1799043301, now seen corresponding path program 1 times [2022-07-22 18:45:27,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:27,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022699299] [2022-07-22 18:45:27,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:27,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:27,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:27,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:27,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022699299] [2022-07-22 18:45:27,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022699299] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:27,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:27,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:45:27,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380502169] [2022-07-22 18:45:27,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:27,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:45:27,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:27,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:45:27,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:45:27,795 INFO L87 Difference]: Start difference. First operand 1325 states and 2050 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:28,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:28,232 INFO L93 Difference]: Finished difference Result 2943 states and 4594 transitions. [2022-07-22 18:45:28,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:45:28,232 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-22 18:45:28,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:28,242 INFO L225 Difference]: With dead ends: 2943 [2022-07-22 18:45:28,242 INFO L226 Difference]: Without dead ends: 2682 [2022-07-22 18:45:28,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:45:28,244 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 1557 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:28,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1557 Valid, 1901 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:45:28,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2022-07-22 18:45:28,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 1595. [2022-07-22 18:45:28,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 1.552697616060226) internal successors, (2475), 1594 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:28,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2475 transitions. [2022-07-22 18:45:28,444 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2475 transitions. Word has length 92 [2022-07-22 18:45:28,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:28,445 INFO L495 AbstractCegarLoop]: Abstraction has 1595 states and 2475 transitions. [2022-07-22 18:45:28,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:28,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2475 transitions. [2022-07-22 18:45:28,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:45:28,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:28,446 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:28,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:45:28,447 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:28,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:28,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1982868957, now seen corresponding path program 1 times [2022-07-22 18:45:28,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:28,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969261970] [2022-07-22 18:45:28,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:28,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:28,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:28,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:28,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969261970] [2022-07-22 18:45:28,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969261970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:28,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:28,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:45:28,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458551093] [2022-07-22 18:45:28,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:28,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:45:28,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:28,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:45:28,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:45:28,572 INFO L87 Difference]: Start difference. First operand 1595 states and 2475 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:29,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:29,033 INFO L93 Difference]: Finished difference Result 3213 states and 5019 transitions. [2022-07-22 18:45:29,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:45:29,034 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-22 18:45:29,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:29,043 INFO L225 Difference]: With dead ends: 3213 [2022-07-22 18:45:29,044 INFO L226 Difference]: Without dead ends: 2952 [2022-07-22 18:45:29,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:45:29,047 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 1752 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:29,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1752 Valid, 2283 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:45:29,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-07-22 18:45:29,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1870. [2022-07-22 18:45:29,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 1.555912252541466) internal successors, (2908), 1869 states have internal predecessors, (2908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:29,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2908 transitions. [2022-07-22 18:45:29,288 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2908 transitions. Word has length 92 [2022-07-22 18:45:29,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:29,288 INFO L495 AbstractCegarLoop]: Abstraction has 1870 states and 2908 transitions. [2022-07-22 18:45:29,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:29,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2908 transitions. [2022-07-22 18:45:29,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:45:29,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:29,290 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:29,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:45:29,292 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:29,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:29,292 INFO L85 PathProgramCache]: Analyzing trace with hash -820597111, now seen corresponding path program 1 times [2022-07-22 18:45:29,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:29,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820335726] [2022-07-22 18:45:29,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:29,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:29,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:29,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:29,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820335726] [2022-07-22 18:45:29,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820335726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:29,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:29,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:45:29,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42317650] [2022-07-22 18:45:29,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:29,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:45:29,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:29,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:45:29,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:45:29,393 INFO L87 Difference]: Start difference. First operand 1870 states and 2908 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:29,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:29,920 INFO L93 Difference]: Finished difference Result 3493 states and 5460 transitions. [2022-07-22 18:45:29,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:45:29,921 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-22 18:45:29,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:29,932 INFO L225 Difference]: With dead ends: 3493 [2022-07-22 18:45:29,932 INFO L226 Difference]: Without dead ends: 3232 [2022-07-22 18:45:29,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:45:29,934 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 2004 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2004 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:29,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2004 Valid, 1924 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:45:29,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3232 states. [2022-07-22 18:45:30,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3232 to 2150. [2022-07-22 18:45:30,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 1.5583992554676593) internal successors, (3349), 2149 states have internal predecessors, (3349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:30,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3349 transitions. [2022-07-22 18:45:30,228 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3349 transitions. Word has length 92 [2022-07-22 18:45:30,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:30,228 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 3349 transitions. [2022-07-22 18:45:30,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:30,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3349 transitions. [2022-07-22 18:45:30,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 18:45:30,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:30,230 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:30,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:45:30,231 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:30,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:30,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2115523499, now seen corresponding path program 1 times [2022-07-22 18:45:30,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:30,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142534167] [2022-07-22 18:45:30,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:30,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:30,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:30,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142534167] [2022-07-22 18:45:30,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142534167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:30,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:30,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:45:30,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461540912] [2022-07-22 18:45:30,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:30,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:45:30,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:30,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:45:30,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:45:30,296 INFO L87 Difference]: Start difference. First operand 2150 states and 3349 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:30,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:30,705 INFO L93 Difference]: Finished difference Result 4250 states and 6646 transitions. [2022-07-22 18:45:30,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:45:30,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-07-22 18:45:30,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:30,714 INFO L225 Difference]: With dead ends: 4250 [2022-07-22 18:45:30,714 INFO L226 Difference]: Without dead ends: 2150 [2022-07-22 18:45:30,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:45:30,718 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 645 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:30,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 140 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:45:30,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2022-07-22 18:45:30,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 2150. [2022-07-22 18:45:30,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 1.5439739413680782) internal successors, (3318), 2149 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:30,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3318 transitions. [2022-07-22 18:45:30,995 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3318 transitions. Word has length 93 [2022-07-22 18:45:30,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:30,996 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 3318 transitions. [2022-07-22 18:45:30,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:30,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3318 transitions. [2022-07-22 18:45:30,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-22 18:45:30,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:30,997 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:30,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:45:30,998 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:30,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:30,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1622736142, now seen corresponding path program 1 times [2022-07-22 18:45:30,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:30,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317402901] [2022-07-22 18:45:30,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:30,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:31,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:31,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:31,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317402901] [2022-07-22 18:45:31,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317402901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:31,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:31,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:45:31,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162522098] [2022-07-22 18:45:31,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:31,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:45:31,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:31,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:45:31,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:45:31,063 INFO L87 Difference]: Start difference. First operand 2150 states and 3318 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:31,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:31,781 INFO L93 Difference]: Finished difference Result 6296 states and 9773 transitions. [2022-07-22 18:45:31,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:45:31,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-07-22 18:45:31,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:31,796 INFO L225 Difference]: With dead ends: 6296 [2022-07-22 18:45:31,796 INFO L226 Difference]: Without dead ends: 4192 [2022-07-22 18:45:31,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:45:31,800 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 950 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:31,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 213 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:45:31,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4192 states. [2022-07-22 18:45:32,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4192 to 4190. [2022-07-22 18:45:32,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.5445213654810217) internal successors, (6470), 4189 states have internal predecessors, (6470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:32,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6470 transitions. [2022-07-22 18:45:32,394 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6470 transitions. Word has length 94 [2022-07-22 18:45:32,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:32,395 INFO L495 AbstractCegarLoop]: Abstraction has 4190 states and 6470 transitions. [2022-07-22 18:45:32,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:32,395 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6470 transitions. [2022-07-22 18:45:32,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-22 18:45:32,397 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:32,397 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:32,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:45:32,397 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:32,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:32,398 INFO L85 PathProgramCache]: Analyzing trace with hash -514732393, now seen corresponding path program 1 times [2022-07-22 18:45:32,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:32,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297851783] [2022-07-22 18:45:32,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:32,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:32,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:32,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:32,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297851783] [2022-07-22 18:45:32,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297851783] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:32,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:32,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:45:32,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937218173] [2022-07-22 18:45:32,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:32,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:45:32,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:32,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:45:32,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:45:32,458 INFO L87 Difference]: Start difference. First operand 4190 states and 6470 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:33,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:33,165 INFO L93 Difference]: Finished difference Result 8318 states and 12875 transitions. [2022-07-22 18:45:33,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:45:33,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-07-22 18:45:33,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:33,195 INFO L225 Difference]: With dead ends: 8318 [2022-07-22 18:45:33,195 INFO L226 Difference]: Without dead ends: 4190 [2022-07-22 18:45:33,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:45:33,203 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 601 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:33,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 164 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:45:33,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4190 states. [2022-07-22 18:45:33,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4190 to 4190. [2022-07-22 18:45:33,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.5299594175220816) internal successors, (6409), 4189 states have internal predecessors, (6409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:33,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6409 transitions. [2022-07-22 18:45:33,783 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6409 transitions. Word has length 95 [2022-07-22 18:45:33,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:33,783 INFO L495 AbstractCegarLoop]: Abstraction has 4190 states and 6409 transitions. [2022-07-22 18:45:33,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:33,784 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6409 transitions. [2022-07-22 18:45:33,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-22 18:45:33,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:33,785 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:33,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 18:45:33,786 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:33,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:33,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1777645674, now seen corresponding path program 1 times [2022-07-22 18:45:33,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:33,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302494492] [2022-07-22 18:45:33,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:33,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:33,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:33,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302494492] [2022-07-22 18:45:33,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302494492] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:33,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:33,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:45:33,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369797654] [2022-07-22 18:45:33,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:33,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:45:33,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:33,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:45:33,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:45:33,847 INFO L87 Difference]: Start difference. First operand 4190 states and 6409 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:34,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:34,470 INFO L93 Difference]: Finished difference Result 8322 states and 12758 transitions. [2022-07-22 18:45:34,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:45:34,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-07-22 18:45:34,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:34,478 INFO L225 Difference]: With dead ends: 8322 [2022-07-22 18:45:34,479 INFO L226 Difference]: Without dead ends: 4190 [2022-07-22 18:45:34,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:45:34,486 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 606 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:34,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 156 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:45:34,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4190 states. [2022-07-22 18:45:34,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4190 to 4190. [2022-07-22 18:45:34,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.5153974695631416) internal successors, (6348), 4189 states have internal predecessors, (6348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:34,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6348 transitions. [2022-07-22 18:45:34,992 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6348 transitions. Word has length 96 [2022-07-22 18:45:34,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:34,993 INFO L495 AbstractCegarLoop]: Abstraction has 4190 states and 6348 transitions. [2022-07-22 18:45:34,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:34,993 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6348 transitions. [2022-07-22 18:45:34,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-22 18:45:34,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:34,995 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:34,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 18:45:34,995 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:34,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:34,996 INFO L85 PathProgramCache]: Analyzing trace with hash -341822485, now seen corresponding path program 1 times [2022-07-22 18:45:34,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:34,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132980193] [2022-07-22 18:45:34,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:34,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:35,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:35,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:35,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132980193] [2022-07-22 18:45:35,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132980193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:35,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:35,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:45:35,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495517530] [2022-07-22 18:45:35,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:35,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:45:35,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:35,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:45:35,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:45:35,048 INFO L87 Difference]: Start difference. First operand 4190 states and 6348 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:35,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:35,782 INFO L93 Difference]: Finished difference Result 8326 states and 12641 transitions. [2022-07-22 18:45:35,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:45:35,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-07-22 18:45:35,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:35,789 INFO L225 Difference]: With dead ends: 8326 [2022-07-22 18:45:35,789 INFO L226 Difference]: Without dead ends: 4190 [2022-07-22 18:45:35,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:45:35,792 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 611 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:35,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 148 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:45:35,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4190 states. [2022-07-22 18:45:36,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4190 to 4190. [2022-07-22 18:45:36,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.5008355216042015) internal successors, (6287), 4189 states have internal predecessors, (6287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:36,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6287 transitions. [2022-07-22 18:45:36,316 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6287 transitions. Word has length 97 [2022-07-22 18:45:36,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:36,316 INFO L495 AbstractCegarLoop]: Abstraction has 4190 states and 6287 transitions. [2022-07-22 18:45:36,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:36,317 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6287 transitions. [2022-07-22 18:45:36,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-22 18:45:36,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:36,318 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:36,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 18:45:36,319 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:36,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:36,319 INFO L85 PathProgramCache]: Analyzing trace with hash 331898154, now seen corresponding path program 1 times [2022-07-22 18:45:36,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:36,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006800083] [2022-07-22 18:45:36,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:36,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:36,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:36,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:36,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006800083] [2022-07-22 18:45:36,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006800083] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:36,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:36,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:45:36,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844049805] [2022-07-22 18:45:36,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:36,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:45:36,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:36,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:45:36,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:45:36,372 INFO L87 Difference]: Start difference. First operand 4190 states and 6287 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:36,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:36,946 INFO L93 Difference]: Finished difference Result 8314 states and 12507 transitions. [2022-07-22 18:45:36,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:45:36,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-07-22 18:45:36,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:36,952 INFO L225 Difference]: With dead ends: 8314 [2022-07-22 18:45:36,952 INFO L226 Difference]: Without dead ends: 4190 [2022-07-22 18:45:36,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:45:36,956 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 569 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:36,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 172 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:45:36,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4190 states. [2022-07-22 18:45:37,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4190 to 4190. [2022-07-22 18:45:37,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.4862735736452615) internal successors, (6226), 4189 states have internal predecessors, (6226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:37,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6226 transitions. [2022-07-22 18:45:37,438 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6226 transitions. Word has length 98 [2022-07-22 18:45:37,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:37,438 INFO L495 AbstractCegarLoop]: Abstraction has 4190 states and 6226 transitions. [2022-07-22 18:45:37,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:37,438 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6226 transitions. [2022-07-22 18:45:37,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-22 18:45:37,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:37,440 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:37,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 18:45:37,440 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:37,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:37,441 INFO L85 PathProgramCache]: Analyzing trace with hash 19008367, now seen corresponding path program 1 times [2022-07-22 18:45:37,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:37,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638353318] [2022-07-22 18:45:37,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:37,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:37,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:37,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:37,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638353318] [2022-07-22 18:45:37,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638353318] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:37,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:37,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 18:45:37,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807831359] [2022-07-22 18:45:37,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:37,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 18:45:37,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:37,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 18:45:37,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:45:37,709 INFO L87 Difference]: Start difference. First operand 4190 states and 6226 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:39,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:39,704 INFO L93 Difference]: Finished difference Result 12342 states and 18330 transitions. [2022-07-22 18:45:39,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 18:45:39,705 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-07-22 18:45:39,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:39,720 INFO L225 Difference]: With dead ends: 12342 [2022-07-22 18:45:39,720 INFO L226 Difference]: Without dead ends: 8341 [2022-07-22 18:45:39,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-07-22 18:45:39,728 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 1601 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:39,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1601 Valid, 689 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 18:45:39,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8341 states. [2022-07-22 18:45:40,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8341 to 4190. [2022-07-22 18:45:40,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.4841250895201719) internal successors, (6217), 4189 states have internal predecessors, (6217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6217 transitions. [2022-07-22 18:45:40,479 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6217 transitions. Word has length 99 [2022-07-22 18:45:40,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:40,479 INFO L495 AbstractCegarLoop]: Abstraction has 4190 states and 6217 transitions. [2022-07-22 18:45:40,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:40,480 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6217 transitions. [2022-07-22 18:45:40,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-22 18:45:40,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:40,481 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:40,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 18:45:40,481 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:40,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:40,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1836312485, now seen corresponding path program 1 times [2022-07-22 18:45:40,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:40,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540071077] [2022-07-22 18:45:40,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:40,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:40,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:40,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:40,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540071077] [2022-07-22 18:45:40,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540071077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:40,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:40,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:45:40,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598540220] [2022-07-22 18:45:40,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:40,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:45:40,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:40,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:45:40,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:45:40,682 INFO L87 Difference]: Start difference. First operand 4190 states and 6217 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:42,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:42,414 INFO L93 Difference]: Finished difference Result 12076 states and 17967 transitions. [2022-07-22 18:45:42,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 18:45:42,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-07-22 18:45:42,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:42,428 INFO L225 Difference]: With dead ends: 12076 [2022-07-22 18:45:42,428 INFO L226 Difference]: Without dead ends: 8091 [2022-07-22 18:45:42,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-07-22 18:45:42,435 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 1674 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1674 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:42,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1674 Valid, 392 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:45:42,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8091 states. [2022-07-22 18:45:43,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8091 to 4190. [2022-07-22 18:45:43,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.4838863690618287) internal successors, (6216), 4189 states have internal predecessors, (6216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:43,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6216 transitions. [2022-07-22 18:45:43,268 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6216 transitions. Word has length 100 [2022-07-22 18:45:43,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:43,268 INFO L495 AbstractCegarLoop]: Abstraction has 4190 states and 6216 transitions. [2022-07-22 18:45:43,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:43,269 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6216 transitions. [2022-07-22 18:45:43,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-22 18:45:43,270 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:43,270 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:43,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 18:45:43,271 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:43,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:43,271 INFO L85 PathProgramCache]: Analyzing trace with hash -332342721, now seen corresponding path program 1 times [2022-07-22 18:45:43,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:43,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198278370] [2022-07-22 18:45:43,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:43,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:43,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:43,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:43,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198278370] [2022-07-22 18:45:43,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198278370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:43,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:43,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:45:43,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338372063] [2022-07-22 18:45:43,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:43,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:45:43,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:43,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:45:43,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:45:43,468 INFO L87 Difference]: Start difference. First operand 4190 states and 6216 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:44,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:44,961 INFO L93 Difference]: Finished difference Result 8870 states and 13143 transitions. [2022-07-22 18:45:44,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 18:45:44,962 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-07-22 18:45:44,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:44,967 INFO L225 Difference]: With dead ends: 8870 [2022-07-22 18:45:44,967 INFO L226 Difference]: Without dead ends: 4824 [2022-07-22 18:45:44,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-07-22 18:45:44,970 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1229 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:44,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 841 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 18:45:44,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4824 states. [2022-07-22 18:45:45,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4824 to 4190. [2022-07-22 18:45:45,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.4831702076867987) internal successors, (6213), 4189 states have internal predecessors, (6213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:45,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6213 transitions. [2022-07-22 18:45:45,769 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6213 transitions. Word has length 100 [2022-07-22 18:45:45,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:45,770 INFO L495 AbstractCegarLoop]: Abstraction has 4190 states and 6213 transitions. [2022-07-22 18:45:45,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:45,770 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6213 transitions. [2022-07-22 18:45:45,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 18:45:45,771 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:45,771 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:45,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 18:45:45,772 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:45,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:45,772 INFO L85 PathProgramCache]: Analyzing trace with hash -60484552, now seen corresponding path program 1 times [2022-07-22 18:45:45,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:45,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993066039] [2022-07-22 18:45:45,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:45,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:45,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:45,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993066039] [2022-07-22 18:45:45,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993066039] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:45,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:45,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:45:45,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161473460] [2022-07-22 18:45:45,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:45,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:45:45,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:45,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:45:45,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:45:45,939 INFO L87 Difference]: Start difference. First operand 4190 states and 6213 transitions. Second operand has 10 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:48,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:48,073 INFO L93 Difference]: Finished difference Result 12387 states and 18377 transitions. [2022-07-22 18:45:48,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 18:45:48,074 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-07-22 18:45:48,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:48,082 INFO L225 Difference]: With dead ends: 12387 [2022-07-22 18:45:48,082 INFO L226 Difference]: Without dead ends: 8356 [2022-07-22 18:45:48,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-07-22 18:45:48,086 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 1510 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:48,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 659 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:45:48,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8356 states. [2022-07-22 18:45:48,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8356 to 4190. [2022-07-22 18:45:48,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.481737884936739) internal successors, (6207), 4189 states have internal predecessors, (6207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:48,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6207 transitions. [2022-07-22 18:45:48,914 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6207 transitions. Word has length 101 [2022-07-22 18:45:48,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:48,914 INFO L495 AbstractCegarLoop]: Abstraction has 4190 states and 6207 transitions. [2022-07-22 18:45:48,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:48,914 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6207 transitions. [2022-07-22 18:45:48,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 18:45:48,915 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:48,915 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:48,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 18:45:48,915 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:48,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:48,916 INFO L85 PathProgramCache]: Analyzing trace with hash -427226295, now seen corresponding path program 1 times [2022-07-22 18:45:48,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:48,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616631079] [2022-07-22 18:45:48,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:48,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:49,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:49,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:49,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616631079] [2022-07-22 18:45:49,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616631079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:49,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:49,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:45:49,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076295102] [2022-07-22 18:45:49,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:49,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:45:49,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:49,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:45:49,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:45:49,071 INFO L87 Difference]: Start difference. First operand 4190 states and 6207 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:51,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:51,388 INFO L93 Difference]: Finished difference Result 12267 states and 18191 transitions. [2022-07-22 18:45:51,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 18:45:51,388 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2022-07-22 18:45:51,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:51,397 INFO L225 Difference]: With dead ends: 12267 [2022-07-22 18:45:51,398 INFO L226 Difference]: Without dead ends: 8311 [2022-07-22 18:45:51,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-07-22 18:45:51,403 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 1457 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:51,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1457 Valid, 637 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:45:51,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8311 states. [2022-07-22 18:45:52,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8311 to 4190. [2022-07-22 18:45:52,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.479111959894963) internal successors, (6196), 4189 states have internal predecessors, (6196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:52,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6196 transitions. [2022-07-22 18:45:52,388 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6196 transitions. Word has length 102 [2022-07-22 18:45:52,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:52,388 INFO L495 AbstractCegarLoop]: Abstraction has 4190 states and 6196 transitions. [2022-07-22 18:45:52,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:52,388 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6196 transitions. [2022-07-22 18:45:52,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-22 18:45:52,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:52,389 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:52,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 18:45:52,389 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:52,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:52,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1548711228, now seen corresponding path program 1 times [2022-07-22 18:45:52,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:52,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219430102] [2022-07-22 18:45:52,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:52,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:52,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:52,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:52,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219430102] [2022-07-22 18:45:52,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219430102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:52,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:52,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:45:52,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727760495] [2022-07-22 18:45:52,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:52,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:45:52,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:52,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:45:52,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:45:52,543 INFO L87 Difference]: Start difference. First operand 4190 states and 6196 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:54,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:54,811 INFO L93 Difference]: Finished difference Result 12167 states and 18020 transitions. [2022-07-22 18:45:54,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 18:45:54,812 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-07-22 18:45:54,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:54,821 INFO L225 Difference]: With dead ends: 12167 [2022-07-22 18:45:54,821 INFO L226 Difference]: Without dead ends: 8266 [2022-07-22 18:45:54,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-07-22 18:45:54,825 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 746 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:54,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 649 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:45:54,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8266 states. [2022-07-22 18:45:55,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8266 to 4190. [2022-07-22 18:45:55,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.4760085939365004) internal successors, (6183), 4189 states have internal predecessors, (6183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:55,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6183 transitions. [2022-07-22 18:45:55,791 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6183 transitions. Word has length 103 [2022-07-22 18:45:55,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:55,792 INFO L495 AbstractCegarLoop]: Abstraction has 4190 states and 6183 transitions. [2022-07-22 18:45:55,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:55,792 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6183 transitions. [2022-07-22 18:45:55,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 18:45:55,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:55,793 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:45:55,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 18:45:55,794 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:55,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:55,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1323186080, now seen corresponding path program 1 times [2022-07-22 18:45:55,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:55,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471821033] [2022-07-22 18:45:55,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:55,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:56,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:56,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:56,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471821033] [2022-07-22 18:45:56,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471821033] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:56,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:56,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 18:45:56,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252697954] [2022-07-22 18:45:56,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:56,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 18:45:56,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:56,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 18:45:56,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-22 18:45:56,150 INFO L87 Difference]: Start difference. First operand 4190 states and 6183 transitions. Second operand has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:01,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:46:01,170 INFO L93 Difference]: Finished difference Result 14771 states and 21918 transitions. [2022-07-22 18:46:01,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 18:46:01,170 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-07-22 18:46:01,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:46:01,184 INFO L225 Difference]: With dead ends: 14771 [2022-07-22 18:46:01,184 INFO L226 Difference]: Without dead ends: 13654 [2022-07-22 18:46:01,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-07-22 18:46:01,187 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 1586 mSDsluCounter, 3890 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 4454 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 18:46:01,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1586 Valid, 4454 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 18:46:01,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13654 states. [2022-07-22 18:46:02,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13654 to 4138. [2022-07-22 18:46:02,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4138 states, 4137 states have (on average 1.47643219724438) internal successors, (6108), 4137 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:02,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4138 states to 4138 states and 6108 transitions. [2022-07-22 18:46:02,425 INFO L78 Accepts]: Start accepts. Automaton has 4138 states and 6108 transitions. Word has length 104 [2022-07-22 18:46:02,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:46:02,425 INFO L495 AbstractCegarLoop]: Abstraction has 4138 states and 6108 transitions. [2022-07-22 18:46:02,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:02,426 INFO L276 IsEmpty]: Start isEmpty. Operand 4138 states and 6108 transitions. [2022-07-22 18:46:02,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 18:46:02,427 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:46:02,427 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:46:02,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 18:46:02,427 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:46:02,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:46:02,428 INFO L85 PathProgramCache]: Analyzing trace with hash -977108255, now seen corresponding path program 1 times [2022-07-22 18:46:02,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:46:02,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035269425] [2022-07-22 18:46:02,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:46:02,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:46:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:46:04,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:46:04,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:46:04,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035269425] [2022-07-22 18:46:04,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035269425] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:46:04,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:46:04,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-07-22 18:46:04,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208467840] [2022-07-22 18:46:04,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:46:04,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-22 18:46:04,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:46:04,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-22 18:46:04,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1391, Unknown=0, NotChecked=0, Total=1482 [2022-07-22 18:46:04,045 INFO L87 Difference]: Start difference. First operand 4138 states and 6108 transitions. Second operand has 39 states, 39 states have (on average 2.6666666666666665) internal successors, (104), 39 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:19,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:46:19,954 INFO L93 Difference]: Finished difference Result 17956 states and 26640 transitions. [2022-07-22 18:46:19,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-22 18:46:19,955 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.6666666666666665) internal successors, (104), 39 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-07-22 18:46:19,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:46:19,978 INFO L225 Difference]: With dead ends: 17956 [2022-07-22 18:46:19,978 INFO L226 Difference]: Without dead ends: 16916 [2022-07-22 18:46:19,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=793, Invalid=4757, Unknown=0, NotChecked=0, Total=5550 [2022-07-22 18:46:19,986 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 2380 mSDsluCounter, 21324 mSDsCounter, 0 mSdLazyCounter, 13721 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2380 SdHoareTripleChecker+Valid, 22260 SdHoareTripleChecker+Invalid, 13799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 13721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-07-22 18:46:19,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2380 Valid, 22260 Invalid, 13799 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 13721 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-07-22 18:46:19,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16916 states. [2022-07-22 18:46:21,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16916 to 4167. [2022-07-22 18:46:21,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4167 states, 4166 states have (on average 1.4747959673547768) internal successors, (6144), 4166 states have internal predecessors, (6144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:21,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4167 states to 4167 states and 6144 transitions. [2022-07-22 18:46:21,492 INFO L78 Accepts]: Start accepts. Automaton has 4167 states and 6144 transitions. Word has length 104 [2022-07-22 18:46:21,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:46:21,493 INFO L495 AbstractCegarLoop]: Abstraction has 4167 states and 6144 transitions. [2022-07-22 18:46:21,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.6666666666666665) internal successors, (104), 39 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:21,493 INFO L276 IsEmpty]: Start isEmpty. Operand 4167 states and 6144 transitions. [2022-07-22 18:46:21,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 18:46:21,494 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:46:21,494 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:46:21,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 18:46:21,494 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:46:21,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:46:21,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1621509664, now seen corresponding path program 1 times [2022-07-22 18:46:21,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:46:21,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778510802] [2022-07-22 18:46:21,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:46:21,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:46:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:46:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:46:21,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:46:21,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778510802] [2022-07-22 18:46:21,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778510802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:46:21,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:46:21,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 18:46:21,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985348884] [2022-07-22 18:46:21,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:46:21,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 18:46:21,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:46:21,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 18:46:21,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:46:21,807 INFO L87 Difference]: Start difference. First operand 4167 states and 6144 transitions. Second operand has 13 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:28,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:46:28,579 INFO L93 Difference]: Finished difference Result 16945 states and 25172 transitions. [2022-07-22 18:46:28,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 18:46:28,579 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-07-22 18:46:28,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:46:28,596 INFO L225 Difference]: With dead ends: 16945 [2022-07-22 18:46:28,596 INFO L226 Difference]: Without dead ends: 15903 [2022-07-22 18:46:28,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-07-22 18:46:28,600 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 1297 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:46:28,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1297 Valid, 2125 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:46:28,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15903 states. [2022-07-22 18:46:30,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15903 to 4163. [2022-07-22 18:46:30,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4163 states, 4162 states have (on average 1.472609322441134) internal successors, (6129), 4162 states have internal predecessors, (6129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:30,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4163 states to 4163 states and 6129 transitions. [2022-07-22 18:46:30,312 INFO L78 Accepts]: Start accepts. Automaton has 4163 states and 6129 transitions. Word has length 104 [2022-07-22 18:46:30,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:46:30,312 INFO L495 AbstractCegarLoop]: Abstraction has 4163 states and 6129 transitions. [2022-07-22 18:46:30,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:30,312 INFO L276 IsEmpty]: Start isEmpty. Operand 4163 states and 6129 transitions. [2022-07-22 18:46:30,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 18:46:30,313 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:46:30,314 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:46:30,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 18:46:30,314 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:46:30,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:46:30,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1886035071, now seen corresponding path program 1 times [2022-07-22 18:46:30,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:46:30,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724379236] [2022-07-22 18:46:30,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:46:30,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:46:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:46:31,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:46:31,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:46:31,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724379236] [2022-07-22 18:46:31,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724379236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:46:31,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:46:31,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-07-22 18:46:31,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907946557] [2022-07-22 18:46:31,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:46:31,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-22 18:46:31,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:46:31,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-22 18:46:31,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1242, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 18:46:31,657 INFO L87 Difference]: Start difference. First operand 4163 states and 6129 transitions. Second operand has 37 states, 37 states have (on average 2.810810810810811) internal successors, (104), 37 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:47,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:46:47,867 INFO L93 Difference]: Finished difference Result 19231 states and 28498 transitions. [2022-07-22 18:46:47,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-22 18:46:47,868 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.810810810810811) internal successors, (104), 37 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-07-22 18:46:47,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:46:47,889 INFO L225 Difference]: With dead ends: 19231 [2022-07-22 18:46:47,889 INFO L226 Difference]: Without dead ends: 15339 [2022-07-22 18:46:47,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=728, Invalid=4242, Unknown=0, NotChecked=0, Total=4970 [2022-07-22 18:46:47,897 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 2249 mSDsluCounter, 19947 mSDsCounter, 0 mSdLazyCounter, 13131 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2249 SdHoareTripleChecker+Valid, 20859 SdHoareTripleChecker+Invalid, 13202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 13131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:46:47,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2249 Valid, 20859 Invalid, 13202 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 13131 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-07-22 18:46:47,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15339 states. [2022-07-22 18:46:49,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15339 to 4189. [2022-07-22 18:46:49,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 4188 states have (on average 1.4708691499522446) internal successors, (6160), 4188 states have internal predecessors, (6160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:49,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 6160 transitions. [2022-07-22 18:46:49,661 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 6160 transitions. Word has length 104 [2022-07-22 18:46:49,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:46:49,661 INFO L495 AbstractCegarLoop]: Abstraction has 4189 states and 6160 transitions. [2022-07-22 18:46:49,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.810810810810811) internal successors, (104), 37 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:49,661 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 6160 transitions. [2022-07-22 18:46:49,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 18:46:49,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:46:49,663 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:46:49,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 18:46:49,663 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:46:49,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:46:49,663 INFO L85 PathProgramCache]: Analyzing trace with hash 434032448, now seen corresponding path program 1 times [2022-07-22 18:46:49,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:46:49,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617325331] [2022-07-22 18:46:49,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:46:49,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:46:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:46:50,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:46:50,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:46:50,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617325331] [2022-07-22 18:46:50,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617325331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:46:50,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:46:50,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 18:46:50,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113026016] [2022-07-22 18:46:50,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:46:50,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 18:46:50,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:46:50,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 18:46:50,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:46:50,011 INFO L87 Difference]: Start difference. First operand 4189 states and 6160 transitions. Second operand has 13 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:58,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:46:58,336 INFO L93 Difference]: Finished difference Result 17209 states and 25497 transitions. [2022-07-22 18:46:58,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 18:46:58,336 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-07-22 18:46:58,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:46:58,357 INFO L225 Difference]: With dead ends: 17209 [2022-07-22 18:46:58,357 INFO L226 Difference]: Without dead ends: 16091 [2022-07-22 18:46:58,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-07-22 18:46:58,362 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 1465 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:46:58,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 2450 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:46:58,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16091 states. [2022-07-22 18:47:00,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16091 to 4129. [2022-07-22 18:47:00,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4129 states, 4128 states have (on average 1.4723837209302326) internal successors, (6078), 4128 states have internal predecessors, (6078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:47:00,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4129 states to 4129 states and 6078 transitions. [2022-07-22 18:47:00,364 INFO L78 Accepts]: Start accepts. Automaton has 4129 states and 6078 transitions. Word has length 104 [2022-07-22 18:47:00,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:47:00,364 INFO L495 AbstractCegarLoop]: Abstraction has 4129 states and 6078 transitions. [2022-07-22 18:47:00,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:47:00,364 INFO L276 IsEmpty]: Start isEmpty. Operand 4129 states and 6078 transitions. [2022-07-22 18:47:00,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 18:47:00,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:47:00,365 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:47:00,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 18:47:00,366 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:47:00,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:47:00,366 INFO L85 PathProgramCache]: Analyzing trace with hash -189921857, now seen corresponding path program 1 times [2022-07-22 18:47:00,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:47:00,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577221368] [2022-07-22 18:47:00,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:47:00,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:47:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:47:00,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:47:00,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:47:00,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577221368] [2022-07-22 18:47:00,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577221368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:47:00,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:47:00,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 18:47:00,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015620246] [2022-07-22 18:47:00,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:47:00,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 18:47:00,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:47:00,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 18:47:00,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-22 18:47:00,691 INFO L87 Difference]: Start difference. First operand 4129 states and 6078 transitions. Second operand has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:47:09,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:47:09,866 INFO L93 Difference]: Finished difference Result 16845 states and 25027 transitions. [2022-07-22 18:47:09,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 18:47:09,867 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-07-22 18:47:09,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:47:09,884 INFO L225 Difference]: With dead ends: 16845 [2022-07-22 18:47:09,884 INFO L226 Difference]: Without dead ends: 15770 [2022-07-22 18:47:09,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2022-07-22 18:47:09,888 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 1221 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:47:09,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 2014 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:47:09,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15770 states. [2022-07-22 18:47:12,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15770 to 4098. [2022-07-22 18:47:12,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 4097 states have (on average 1.4735172077129608) internal successors, (6037), 4097 states have internal predecessors, (6037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:47:12,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 6037 transitions. [2022-07-22 18:47:12,190 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 6037 transitions. Word has length 104 [2022-07-22 18:47:12,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:47:12,191 INFO L495 AbstractCegarLoop]: Abstraction has 4098 states and 6037 transitions. [2022-07-22 18:47:12,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:47:12,191 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 6037 transitions. [2022-07-22 18:47:12,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 18:47:12,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:47:12,192 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:47:12,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 18:47:12,193 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:47:12,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:47:12,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1844155757, now seen corresponding path program 1 times [2022-07-22 18:47:12,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:47:12,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91698884] [2022-07-22 18:47:12,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:47:12,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:47:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:47:12,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:47:12,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:47:12,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91698884] [2022-07-22 18:47:12,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91698884] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:47:12,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:47:12,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 18:47:12,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343255123] [2022-07-22 18:47:12,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:47:12,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 18:47:12,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:47:12,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 18:47:12,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-22 18:47:12,542 INFO L87 Difference]: Start difference. First operand 4098 states and 6037 transitions. Second operand has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:47:27,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:47:27,968 INFO L93 Difference]: Finished difference Result 24634 states and 36631 transitions. [2022-07-22 18:47:27,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 18:47:27,968 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-07-22 18:47:27,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:47:27,995 INFO L225 Difference]: With dead ends: 24634 [2022-07-22 18:47:27,995 INFO L226 Difference]: Without dead ends: 23564 [2022-07-22 18:47:28,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-07-22 18:47:28,002 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 2233 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2233 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:47:28,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2233 Valid, 2406 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:47:28,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23564 states. [2022-07-22 18:47:30,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23564 to 4064. [2022-07-22 18:47:30,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4064 states, 4063 states have (on average 1.4750184592665518) internal successors, (5993), 4063 states have internal predecessors, (5993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:47:30,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4064 states to 4064 states and 5993 transitions. [2022-07-22 18:47:30,710 INFO L78 Accepts]: Start accepts. Automaton has 4064 states and 5993 transitions. Word has length 105 [2022-07-22 18:47:30,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:47:30,710 INFO L495 AbstractCegarLoop]: Abstraction has 4064 states and 5993 transitions. [2022-07-22 18:47:30,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:47:30,710 INFO L276 IsEmpty]: Start isEmpty. Operand 4064 states and 5993 transitions. [2022-07-22 18:47:30,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 18:47:30,710 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:47:30,711 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:47:30,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 18:47:30,711 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:47:30,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:47:30,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1003510435, now seen corresponding path program 1 times [2022-07-22 18:47:30,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:47:30,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851773942] [2022-07-22 18:47:30,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:47:30,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:47:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:47:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:47:31,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:47:31,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851773942] [2022-07-22 18:47:31,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851773942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:47:31,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:47:31,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 18:47:31,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945556357] [2022-07-22 18:47:31,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:47:31,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 18:47:31,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:47:31,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 18:47:31,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-22 18:47:31,064 INFO L87 Difference]: Start difference. First operand 4064 states and 5993 transitions. Second operand has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:47:48,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:47:48,911 INFO L93 Difference]: Finished difference Result 24618 states and 36609 transitions. [2022-07-22 18:47:48,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 18:47:48,912 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-22 18:47:48,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:47:48,978 INFO L225 Difference]: With dead ends: 24618 [2022-07-22 18:47:48,978 INFO L226 Difference]: Without dead ends: 23550 [2022-07-22 18:47:48,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-07-22 18:47:48,985 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 1664 mSDsluCounter, 2810 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1664 SdHoareTripleChecker+Valid, 3324 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:47:48,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1664 Valid, 3324 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:47:48,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23550 states. [2022-07-22 18:47:52,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23550 to 4033. [2022-07-22 18:47:52,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4033 states, 4032 states have (on average 1.476686507936508) internal successors, (5954), 4032 states have internal predecessors, (5954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:47:52,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 5954 transitions. [2022-07-22 18:47:52,105 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 5954 transitions. Word has length 106 [2022-07-22 18:47:52,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:47:52,105 INFO L495 AbstractCegarLoop]: Abstraction has 4033 states and 5954 transitions. [2022-07-22 18:47:52,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:47:52,106 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 5954 transitions. [2022-07-22 18:47:52,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 18:47:52,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:47:52,106 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:47:52,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 18:47:52,106 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:47:52,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:47:52,106 INFO L85 PathProgramCache]: Analyzing trace with hash -118533378, now seen corresponding path program 1 times [2022-07-22 18:47:52,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:47:52,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584671164] [2022-07-22 18:47:52,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:47:52,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:47:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:47:52,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:47:52,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:47:52,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584671164] [2022-07-22 18:47:52,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584671164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:47:52,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:47:52,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:47:52,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105208957] [2022-07-22 18:47:52,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:47:52,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:47:52,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:47:52,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:47:52,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:47:52,193 INFO L87 Difference]: Start difference. First operand 4033 states and 5954 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:47:56,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:47:56,544 INFO L93 Difference]: Finished difference Result 9575 states and 14223 transitions. [2022-07-22 18:47:56,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:47:56,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-22 18:47:56,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:47:56,550 INFO L225 Difference]: With dead ends: 9575 [2022-07-22 18:47:56,551 INFO L226 Difference]: Without dead ends: 5687 [2022-07-22 18:47:56,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:47:56,555 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 104 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:47:56,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 515 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:47:56,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5687 states. [2022-07-22 18:48:00,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5687 to 5659. [2022-07-22 18:48:00,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5659 states, 5658 states have (on average 1.4731353835277483) internal successors, (8335), 5658 states have internal predecessors, (8335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:48:00,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5659 states to 5659 states and 8335 transitions. [2022-07-22 18:48:00,722 INFO L78 Accepts]: Start accepts. Automaton has 5659 states and 8335 transitions. Word has length 106 [2022-07-22 18:48:00,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:48:00,722 INFO L495 AbstractCegarLoop]: Abstraction has 5659 states and 8335 transitions. [2022-07-22 18:48:00,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:48:00,722 INFO L276 IsEmpty]: Start isEmpty. Operand 5659 states and 8335 transitions. [2022-07-22 18:48:00,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 18:48:00,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:48:00,723 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:48:00,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 18:48:00,723 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:48:00,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:48:00,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1377617854, now seen corresponding path program 1 times [2022-07-22 18:48:00,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:48:00,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925253678] [2022-07-22 18:48:00,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:48:00,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:48:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:48:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:48:00,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:48:00,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925253678] [2022-07-22 18:48:00,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925253678] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:48:00,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:48:00,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:48:00,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032968422] [2022-07-22 18:48:00,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:48:00,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:48:00,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:48:00,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:48:00,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:48:00,813 INFO L87 Difference]: Start difference. First operand 5659 states and 8335 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:48:07,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:48:07,591 INFO L93 Difference]: Finished difference Result 8839 states and 13015 transitions. [2022-07-22 18:48:07,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 18:48:07,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-22 18:48:07,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:48:07,599 INFO L225 Difference]: With dead ends: 8839 [2022-07-22 18:48:07,599 INFO L226 Difference]: Without dead ends: 8837 [2022-07-22 18:48:07,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:48:07,601 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 200 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:48:07,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 861 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:48:07,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8837 states. [2022-07-22 18:48:11,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8837 to 5687. [2022-07-22 18:48:11,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5687 states, 5686 states have (on average 1.4655293703833978) internal successors, (8333), 5686 states have internal predecessors, (8333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:48:11,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5687 states to 5687 states and 8333 transitions. [2022-07-22 18:48:11,813 INFO L78 Accepts]: Start accepts. Automaton has 5687 states and 8333 transitions. Word has length 106 [2022-07-22 18:48:11,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:48:11,813 INFO L495 AbstractCegarLoop]: Abstraction has 5687 states and 8333 transitions. [2022-07-22 18:48:11,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:48:11,813 INFO L276 IsEmpty]: Start isEmpty. Operand 5687 states and 8333 transitions. [2022-07-22 18:48:11,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-22 18:48:11,816 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:48:11,816 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:48:11,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-22 18:48:11,816 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:48:11,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:48:11,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1296554994, now seen corresponding path program 1 times [2022-07-22 18:48:11,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:48:11,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021771517] [2022-07-22 18:48:11,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:48:11,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:48:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:48:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:48:11,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:48:11,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021771517] [2022-07-22 18:48:11,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021771517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:48:11,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:48:11,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:48:11,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981842441] [2022-07-22 18:48:11,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:48:11,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:48:11,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:48:11,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:48:11,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:48:11,896 INFO L87 Difference]: Start difference. First operand 5687 states and 8333 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:48:28,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:48:28,173 INFO L93 Difference]: Finished difference Result 26195 states and 38588 transitions. [2022-07-22 18:48:28,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 18:48:28,174 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-07-22 18:48:28,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:48:28,196 INFO L225 Difference]: With dead ends: 26195 [2022-07-22 18:48:28,196 INFO L226 Difference]: Without dead ends: 20653 [2022-07-22 18:48:28,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:48:28,203 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 1457 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:48:28,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1457 Valid, 556 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:48:28,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20653 states. [2022-07-22 18:48:34,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20653 to 8497. [2022-07-22 18:48:34,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8497 states, 8496 states have (on average 1.4679849340866291) internal successors, (12472), 8496 states have internal predecessors, (12472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:48:34,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8497 states to 8497 states and 12472 transitions. [2022-07-22 18:48:34,702 INFO L78 Accepts]: Start accepts. Automaton has 8497 states and 12472 transitions. Word has length 138 [2022-07-22 18:48:34,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:48:34,703 INFO L495 AbstractCegarLoop]: Abstraction has 8497 states and 12472 transitions. [2022-07-22 18:48:34,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:48:34,703 INFO L276 IsEmpty]: Start isEmpty. Operand 8497 states and 12472 transitions. [2022-07-22 18:48:34,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-22 18:48:34,706 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:48:34,706 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:48:34,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-22 18:48:34,706 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:48:34,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:48:34,707 INFO L85 PathProgramCache]: Analyzing trace with hash -37578469, now seen corresponding path program 1 times [2022-07-22 18:48:34,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:48:34,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843641321] [2022-07-22 18:48:34,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:48:34,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:48:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:48:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:48:34,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:48:34,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843641321] [2022-07-22 18:48:34,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843641321] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:48:34,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:48:34,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:48:34,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606908598] [2022-07-22 18:48:34,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:48:34,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:48:34,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:48:34,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:48:34,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:48:34,779 INFO L87 Difference]: Start difference. First operand 8497 states and 12472 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:49:03,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:49:03,777 INFO L93 Difference]: Finished difference Result 44777 states and 65720 transitions. [2022-07-22 18:49:03,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 18:49:03,778 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-07-22 18:49:03,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:49:03,831 INFO L225 Difference]: With dead ends: 44777 [2022-07-22 18:49:03,831 INFO L226 Difference]: Without dead ends: 36461 [2022-07-22 18:49:03,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:49:03,844 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 1676 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1676 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:49:03,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1676 Valid, 446 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:49:03,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36461 states. [2022-07-22 18:49:17,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36461 to 17971. [2022-07-22 18:49:17,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17971 states, 17970 states have (on average 1.467056204785754) internal successors, (26363), 17970 states have internal predecessors, (26363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:49:17,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17971 states to 17971 states and 26363 transitions. [2022-07-22 18:49:17,354 INFO L78 Accepts]: Start accepts. Automaton has 17971 states and 26363 transitions. Word has length 138 [2022-07-22 18:49:17,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:49:17,354 INFO L495 AbstractCegarLoop]: Abstraction has 17971 states and 26363 transitions. [2022-07-22 18:49:17,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:49:17,354 INFO L276 IsEmpty]: Start isEmpty. Operand 17971 states and 26363 transitions. [2022-07-22 18:49:17,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-22 18:49:17,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:49:17,357 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:49:17,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-22 18:49:17,358 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:49:17,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:49:17,358 INFO L85 PathProgramCache]: Analyzing trace with hash 471189665, now seen corresponding path program 1 times [2022-07-22 18:49:17,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:49:17,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309870986] [2022-07-22 18:49:17,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:49:17,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:49:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:49:17,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:49:17,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:49:17,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309870986] [2022-07-22 18:49:17,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309870986] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:49:17,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:49:17,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:49:17,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068442346] [2022-07-22 18:49:17,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:49:17,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:49:17,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:49:17,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:49:17,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:49:17,431 INFO L87 Difference]: Start difference. First operand 17971 states and 26363 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)