./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203ad646-2f03-496c-bb6c-e4cacc83ce16/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203ad646-2f03-496c-bb6c-e4cacc83ce16/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203ad646-2f03-496c-bb6c-e4cacc83ce16/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203ad646-2f03-496c-bb6c-e4cacc83ce16/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203ad646-2f03-496c-bb6c-e4cacc83ce16/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203ad646-2f03-496c-bb6c-e4cacc83ce16/bin/uautomizer-ug76WZFUDN --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 b1a54cb791c5af35332ec00d8dfd3a394281252d9141996dd7e5974a534492ee --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:11:09,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:11:09,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:11:09,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:11:09,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:11:09,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:11:09,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:11:09,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:11:09,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:11:09,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:11:09,512 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:11:09,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:11:09,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:11:09,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:11:09,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:11:09,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:11:09,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:11:09,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:11:09,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:11:09,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:11:09,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:11:09,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:11:09,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:11:09,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:11:09,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:11:09,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:11:09,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:11:09,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:11:09,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:11:09,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:11:09,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:11:09,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:11:09,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:11:09,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:11:09,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:11:09,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:11:09,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:11:09,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:11:09,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:11:09,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:11:09,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:11:09,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203ad646-2f03-496c-bb6c-e4cacc83ce16/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:11:09,601 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:11:09,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:11:09,602 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:11:09,603 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:11:09,604 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:11:09,604 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:11:09,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:11:09,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:11:09,605 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:11:09,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:11:09,607 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:11:09,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:11:09,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:11:09,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:11:09,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:11:09,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:11:09,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:11:09,609 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:11:09,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:11:09,609 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:11:09,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:11:09,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:11:09,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:11:09,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:11:09,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:11:09,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:11:09,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:11:09,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:11:09,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:11:09,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:11:09,612 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:11:09,612 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:11:09,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:11:09,613 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203ad646-2f03-496c-bb6c-e4cacc83ce16/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203ad646-2f03-496c-bb6c-e4cacc83ce16/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1a54cb791c5af35332ec00d8dfd3a394281252d9141996dd7e5974a534492ee [2022-11-20 12:11:09,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:11:09,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:11:09,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:11:09,979 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:11:09,979 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:11:09,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203ad646-2f03-496c-bb6c-e4cacc83ce16/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2022-11-20 12:11:13,124 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:11:13,378 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:11:13,379 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203ad646-2f03-496c-bb6c-e4cacc83ce16/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2022-11-20 12:11:13,389 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203ad646-2f03-496c-bb6c-e4cacc83ce16/bin/uautomizer-ug76WZFUDN/data/afd9eda33/2189d3dc4ead4c0ea8fcf60ea71a1290/FLAG90751b64c [2022-11-20 12:11:13,404 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203ad646-2f03-496c-bb6c-e4cacc83ce16/bin/uautomizer-ug76WZFUDN/data/afd9eda33/2189d3dc4ead4c0ea8fcf60ea71a1290 [2022-11-20 12:11:13,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:11:13,408 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:11:13,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:11:13,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:11:13,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:11:13,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:11:13" (1/1) ... [2022-11-20 12:11:13,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e64839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:13, skipping insertion in model container [2022-11-20 12:11:13,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:11:13" (1/1) ... [2022-11-20 12:11:13,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:11:13,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:11:13,701 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203ad646-2f03-496c-bb6c-e4cacc83ce16/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6694,6707] [2022-11-20 12:11:13,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:11:13,765 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:11:13,814 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203ad646-2f03-496c-bb6c-e4cacc83ce16/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6694,6707] [2022-11-20 12:11:13,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:11:13,856 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:11:13,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:13 WrapperNode [2022-11-20 12:11:13,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:11:13,858 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:11:13,858 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:11:13,858 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:11:13,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:13" (1/1) ... [2022-11-20 12:11:13,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:13" (1/1) ... [2022-11-20 12:11:13,920 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 495 [2022-11-20 12:11:13,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:11:13,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:11:13,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:11:13,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:11:13,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:13" (1/1) ... [2022-11-20 12:11:13,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:13" (1/1) ... [2022-11-20 12:11:13,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:13" (1/1) ... [2022-11-20 12:11:13,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:13" (1/1) ... [2022-11-20 12:11:13,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:13" (1/1) ... [2022-11-20 12:11:13,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:13" (1/1) ... [2022-11-20 12:11:13,972 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:13" (1/1) ... [2022-11-20 12:11:13,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:13" (1/1) ... [2022-11-20 12:11:13,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:11:13,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:11:13,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:11:13,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:11:13,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:13" (1/1) ... [2022-11-20 12:11:13,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:11:14,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203ad646-2f03-496c-bb6c-e4cacc83ce16/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:11:14,015 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203ad646-2f03-496c-bb6c-e4cacc83ce16/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:11:14,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203ad646-2f03-496c-bb6c-e4cacc83ce16/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:11:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:11:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:11:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:11:14,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:11:14,296 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:11:14,298 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:11:14,997 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:11:15,005 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:11:15,006 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:11:15,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:11:15 BoogieIcfgContainer [2022-11-20 12:11:15,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:11:15,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:11:15,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:11:15,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:11:15,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:11:13" (1/3) ... [2022-11-20 12:11:15,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d8aa86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:11:15, skipping insertion in model container [2022-11-20 12:11:15,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:13" (2/3) ... [2022-11-20 12:11:15,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d8aa86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:11:15, skipping insertion in model container [2022-11-20 12:11:15,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:11:15" (3/3) ... [2022-11-20 12:11:15,018 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2022-11-20 12:11:15,037 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:11:15,038 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:11:15,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:11:15,097 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@21e040c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:11:15,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:11:15,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 114 states have (on average 1.7456140350877194) internal successors, (199), 115 states have internal predecessors, (199), 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) [2022-11-20 12:11:15,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-20 12:11:15,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:15,113 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] [2022-11-20 12:11:15,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:15,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:15,119 INFO L85 PathProgramCache]: Analyzing trace with hash -866113193, now seen corresponding path program 1 times [2022-11-20 12:11:15,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:15,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316508271] [2022-11-20 12:11:15,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:15,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:15,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:15,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316508271] [2022-11-20 12:11:15,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316508271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:15,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:15,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:11:15,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540612413] [2022-11-20 12:11:15,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:15,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:15,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:15,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:15,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:15,614 INFO L87 Difference]: Start difference. First operand has 116 states, 114 states have (on average 1.7456140350877194) internal successors, (199), 115 states have internal predecessors, (199), 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 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-11-20 12:11:15,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:15,718 INFO L93 Difference]: Finished difference Result 254 states and 416 transitions. [2022-11-20 12:11:15,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:15,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2022-11-20 12:11:15,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:15,739 INFO L225 Difference]: With dead ends: 254 [2022-11-20 12:11:15,740 INFO L226 Difference]: Without dead ends: 175 [2022-11-20 12:11:15,744 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 [2022-11-20 12:11:15,749 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 140 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:15,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 407 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:11:15,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-20 12:11:15,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2022-11-20 12:11:15,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.4534883720930232) internal successors, (250), 172 states have internal predecessors, (250), 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) [2022-11-20 12:11:15,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 250 transitions. [2022-11-20 12:11:15,815 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 250 transitions. Word has length 72 [2022-11-20 12:11:15,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:15,816 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 250 transitions. [2022-11-20 12:11:15,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-11-20 12:11:15,816 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 250 transitions. [2022-11-20 12:11:15,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 12:11:15,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:15,819 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] [2022-11-20 12:11:15,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:11:15,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:15,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:15,821 INFO L85 PathProgramCache]: Analyzing trace with hash -566031041, now seen corresponding path program 1 times [2022-11-20 12:11:15,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:15,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266974064] [2022-11-20 12:11:15,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:15,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:16,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:16,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266974064] [2022-11-20 12:11:16,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266974064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:16,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:16,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:11:16,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451291166] [2022-11-20 12:11:16,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:16,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:16,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:16,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:16,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:16,032 INFO L87 Difference]: Start difference. First operand 173 states and 250 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-11-20 12:11:16,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:16,145 INFO L93 Difference]: Finished difference Result 417 states and 638 transitions. [2022-11-20 12:11:16,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:16,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2022-11-20 12:11:16,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:16,149 INFO L225 Difference]: With dead ends: 417 [2022-11-20 12:11:16,152 INFO L226 Difference]: Without dead ends: 287 [2022-11-20 12:11:16,153 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 [2022-11-20 12:11:16,155 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 96 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:16,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 350 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:11:16,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-20 12:11:16,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2022-11-20 12:11:16,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.5070422535211268) internal successors, (428), 284 states have internal predecessors, (428), 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) [2022-11-20 12:11:16,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 428 transitions. [2022-11-20 12:11:16,223 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 428 transitions. Word has length 73 [2022-11-20 12:11:16,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:16,224 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 428 transitions. [2022-11-20 12:11:16,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-11-20 12:11:16,224 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 428 transitions. [2022-11-20 12:11:16,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 12:11:16,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:16,234 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] [2022-11-20 12:11:16,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:11:16,237 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:16,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:16,240 INFO L85 PathProgramCache]: Analyzing trace with hash -739923133, now seen corresponding path program 1 times [2022-11-20 12:11:16,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:16,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112474161] [2022-11-20 12:11:16,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:16,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:16,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:16,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:16,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112474161] [2022-11-20 12:11:16,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112474161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:16,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:16,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:11:16,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943058651] [2022-11-20 12:11:16,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:16,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:16,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:16,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:16,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:16,417 INFO L87 Difference]: Start difference. First operand 285 states and 428 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2022-11-20 12:11:16,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:16,478 INFO L93 Difference]: Finished difference Result 737 states and 1146 transitions. [2022-11-20 12:11:16,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:16,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2022-11-20 12:11:16,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:16,482 INFO L225 Difference]: With dead ends: 737 [2022-11-20 12:11:16,482 INFO L226 Difference]: Without dead ends: 495 [2022-11-20 12:11:16,484 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 [2022-11-20 12:11:16,485 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 91 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:16,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 346 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:11:16,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-11-20 12:11:16,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 493. [2022-11-20 12:11:16,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 1.5365853658536586) internal successors, (756), 492 states have internal predecessors, (756), 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) [2022-11-20 12:11:16,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 756 transitions. [2022-11-20 12:11:16,539 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 756 transitions. Word has length 74 [2022-11-20 12:11:16,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:16,539 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 756 transitions. [2022-11-20 12:11:16,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2022-11-20 12:11:16,540 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 756 transitions. [2022-11-20 12:11:16,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 12:11:16,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:16,541 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] [2022-11-20 12:11:16,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:11:16,541 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:16,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:16,542 INFO L85 PathProgramCache]: Analyzing trace with hash 330068461, now seen corresponding path program 1 times [2022-11-20 12:11:16,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:16,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35893694] [2022-11-20 12:11:16,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:16,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:16,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:16,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35893694] [2022-11-20 12:11:16,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35893694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:16,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:16,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:11:16,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472275861] [2022-11-20 12:11:16,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:16,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:16,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:16,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:16,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:16,634 INFO L87 Difference]: Start difference. First operand 493 states and 756 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2022-11-20 12:11:16,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:16,748 INFO L93 Difference]: Finished difference Result 1329 states and 2078 transitions. [2022-11-20 12:11:16,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:16,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2022-11-20 12:11:16,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:16,753 INFO L225 Difference]: With dead ends: 1329 [2022-11-20 12:11:16,754 INFO L226 Difference]: Without dead ends: 879 [2022-11-20 12:11:16,755 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 [2022-11-20 12:11:16,757 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 86 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:16,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 342 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:11:16,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2022-11-20 12:11:16,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2022-11-20 12:11:16,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 876 states have (on average 1.547945205479452) internal successors, (1356), 876 states have internal predecessors, (1356), 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) [2022-11-20 12:11:16,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1356 transitions. [2022-11-20 12:11:16,872 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1356 transitions. Word has length 75 [2022-11-20 12:11:16,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:16,874 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1356 transitions. [2022-11-20 12:11:16,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2022-11-20 12:11:16,875 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1356 transitions. [2022-11-20 12:11:16,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-20 12:11:16,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:16,876 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] [2022-11-20 12:11:16,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:11:16,876 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:16,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:16,877 INFO L85 PathProgramCache]: Analyzing trace with hash -298149753, now seen corresponding path program 1 times [2022-11-20 12:11:16,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:16,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425820200] [2022-11-20 12:11:16,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:16,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:16,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:16,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425820200] [2022-11-20 12:11:16,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425820200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:16,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:16,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:11:16,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882360602] [2022-11-20 12:11:17,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:17,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:17,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:17,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:17,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:17,002 INFO L87 Difference]: Start difference. First operand 877 states and 1356 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2022-11-20 12:11:17,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:17,234 INFO L93 Difference]: Finished difference Result 2417 states and 3774 transitions. [2022-11-20 12:11:17,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:17,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2022-11-20 12:11:17,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:17,242 INFO L225 Difference]: With dead ends: 2417 [2022-11-20 12:11:17,242 INFO L226 Difference]: Without dead ends: 1583 [2022-11-20 12:11:17,244 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 [2022-11-20 12:11:17,245 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 81 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:17,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 338 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:11:17,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2022-11-20 12:11:17,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1581. [2022-11-20 12:11:17,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1580 states have (on average 1.5468354430379747) internal successors, (2444), 1580 states have internal predecessors, (2444), 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) [2022-11-20 12:11:17,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2444 transitions. [2022-11-20 12:11:17,463 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2444 transitions. Word has length 76 [2022-11-20 12:11:17,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:17,466 INFO L495 AbstractCegarLoop]: Abstraction has 1581 states and 2444 transitions. [2022-11-20 12:11:17,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2022-11-20 12:11:17,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2444 transitions. [2022-11-20 12:11:17,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 12:11:17,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:17,477 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] [2022-11-20 12:11:17,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:11:17,477 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:17,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:17,478 INFO L85 PathProgramCache]: Analyzing trace with hash -2012894605, now seen corresponding path program 1 times [2022-11-20 12:11:17,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:17,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832576113] [2022-11-20 12:11:17,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:17,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:17,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:17,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:17,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832576113] [2022-11-20 12:11:17,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832576113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:17,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:17,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:11:17,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617121215] [2022-11-20 12:11:17,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:17,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:17,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:17,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:17,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:17,614 INFO L87 Difference]: Start difference. First operand 1581 states and 2444 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2022-11-20 12:11:17,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:17,974 INFO L93 Difference]: Finished difference Result 4401 states and 6830 transitions. [2022-11-20 12:11:17,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:17,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2022-11-20 12:11:17,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:17,986 INFO L225 Difference]: With dead ends: 4401 [2022-11-20 12:11:17,987 INFO L226 Difference]: Without dead ends: 2863 [2022-11-20 12:11:17,989 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 [2022-11-20 12:11:17,991 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 76 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:17,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 334 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:11:17,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2022-11-20 12:11:18,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2861. [2022-11-20 12:11:18,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2861 states, 2860 states have (on average 1.5370629370629372) internal successors, (4396), 2860 states have internal predecessors, (4396), 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) [2022-11-20 12:11:18,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 4396 transitions. [2022-11-20 12:11:18,309 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 4396 transitions. Word has length 77 [2022-11-20 12:11:18,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:18,310 INFO L495 AbstractCegarLoop]: Abstraction has 2861 states and 4396 transitions. [2022-11-20 12:11:18,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2022-11-20 12:11:18,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 4396 transitions. [2022-11-20 12:11:18,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 12:11:18,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:18,311 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] [2022-11-20 12:11:18,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:11:18,312 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:18,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:18,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1910583587, now seen corresponding path program 1 times [2022-11-20 12:11:18,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:18,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770812576] [2022-11-20 12:11:18,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:18,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:18,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:18,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:18,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770812576] [2022-11-20 12:11:18,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770812576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:18,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:18,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:11:18,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174316477] [2022-11-20 12:11:18,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:18,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:11:18,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:18,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:11:18,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:11:18,553 INFO L87 Difference]: Start difference. First operand 2861 states and 4396 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2022-11-20 12:11:23,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:23,067 INFO L93 Difference]: Finished difference Result 36677 states and 56632 transitions. [2022-11-20 12:11:23,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:11:23,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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 78 [2022-11-20 12:11:23,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:23,211 INFO L225 Difference]: With dead ends: 36677 [2022-11-20 12:11:23,211 INFO L226 Difference]: Without dead ends: 33859 [2022-11-20 12:11:23,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:11:23,231 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 1642 mSDsluCounter, 3118 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 3268 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:23,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1642 Valid, 3268 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:11:23,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33859 states. [2022-11-20 12:11:24,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33859 to 5677. [2022-11-20 12:11:24,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5677 states, 5676 states have (on average 1.518675123326286) internal successors, (8620), 5676 states have internal predecessors, (8620), 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) [2022-11-20 12:11:24,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5677 states to 5677 states and 8620 transitions. [2022-11-20 12:11:24,654 INFO L78 Accepts]: Start accepts. Automaton has 5677 states and 8620 transitions. Word has length 78 [2022-11-20 12:11:24,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:24,655 INFO L495 AbstractCegarLoop]: Abstraction has 5677 states and 8620 transitions. [2022-11-20 12:11:24,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2022-11-20 12:11:24,655 INFO L276 IsEmpty]: Start isEmpty. Operand 5677 states and 8620 transitions. [2022-11-20 12:11:24,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 12:11:24,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:24,656 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] [2022-11-20 12:11:24,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:11:24,657 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:24,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:24,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1197972063, now seen corresponding path program 1 times [2022-11-20 12:11:24,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:24,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835609113] [2022-11-20 12:11:24,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:24,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:24,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:24,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:24,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835609113] [2022-11-20 12:11:24,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835609113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:24,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:24,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:11:24,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602203673] [2022-11-20 12:11:24,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:24,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:24,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:24,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:24,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:24,738 INFO L87 Difference]: Start difference. First operand 5677 states and 8620 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-11-20 12:11:26,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:26,056 INFO L93 Difference]: Finished difference Result 14035 states and 21328 transitions. [2022-11-20 12:11:26,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:26,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2022-11-20 12:11:26,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:26,077 INFO L225 Difference]: With dead ends: 14035 [2022-11-20 12:11:26,077 INFO L226 Difference]: Without dead ends: 8401 [2022-11-20 12:11:26,084 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 [2022-11-20 12:11:26,085 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 67 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:26,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 298 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:11:26,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8401 states. [2022-11-20 12:11:27,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8401 to 8399. [2022-11-20 12:11:27,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8399 states, 8398 states have (on average 1.506787330316742) internal successors, (12654), 8398 states have internal predecessors, (12654), 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) [2022-11-20 12:11:27,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8399 states to 8399 states and 12654 transitions. [2022-11-20 12:11:27,197 INFO L78 Accepts]: Start accepts. Automaton has 8399 states and 12654 transitions. Word has length 80 [2022-11-20 12:11:27,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:27,198 INFO L495 AbstractCegarLoop]: Abstraction has 8399 states and 12654 transitions. [2022-11-20 12:11:27,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-11-20 12:11:27,198 INFO L276 IsEmpty]: Start isEmpty. Operand 8399 states and 12654 transitions. [2022-11-20 12:11:27,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 12:11:27,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:27,199 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] [2022-11-20 12:11:27,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:11:27,200 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:27,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:27,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1218974718, now seen corresponding path program 1 times [2022-11-20 12:11:27,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:27,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392039038] [2022-11-20 12:11:27,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:27,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:27,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:27,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:27,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392039038] [2022-11-20 12:11:27,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392039038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:27,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:27,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:11:27,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157277104] [2022-11-20 12:11:27,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:27,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:11:27,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:27,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:11:27,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:11:27,547 INFO L87 Difference]: Start difference. First operand 8399 states and 12654 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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) [2022-11-20 12:11:28,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:28,898 INFO L93 Difference]: Finished difference Result 16755 states and 25264 transitions. [2022-11-20 12:11:28,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:11:28,899 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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 80 [2022-11-20 12:11:28,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:28,918 INFO L225 Difference]: With dead ends: 16755 [2022-11-20 12:11:28,918 INFO L226 Difference]: Without dead ends: 8401 [2022-11-20 12:11:28,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:11:28,928 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 369 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:28,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 797 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:11:28,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8401 states. [2022-11-20 12:11:30,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8401 to 8399. [2022-11-20 12:11:30,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8399 states, 8398 states have (on average 1.4953560371517027) internal successors, (12558), 8398 states have internal predecessors, (12558), 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) [2022-11-20 12:11:30,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8399 states to 8399 states and 12558 transitions. [2022-11-20 12:11:30,304 INFO L78 Accepts]: Start accepts. Automaton has 8399 states and 12558 transitions. Word has length 80 [2022-11-20 12:11:30,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:30,305 INFO L495 AbstractCegarLoop]: Abstraction has 8399 states and 12558 transitions. [2022-11-20 12:11:30,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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) [2022-11-20 12:11:30,305 INFO L276 IsEmpty]: Start isEmpty. Operand 8399 states and 12558 transitions. [2022-11-20 12:11:30,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 12:11:30,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:30,307 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] [2022-11-20 12:11:30,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:11:30,307 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:30,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:30,308 INFO L85 PathProgramCache]: Analyzing trace with hash -868398721, now seen corresponding path program 1 times [2022-11-20 12:11:30,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:30,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958293914] [2022-11-20 12:11:30,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:30,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:30,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:30,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:30,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958293914] [2022-11-20 12:11:30,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958293914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:30,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:30,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:11:30,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77614239] [2022-11-20 12:11:30,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:30,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:11:30,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:30,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:11:30,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:11:30,466 INFO L87 Difference]: Start difference. First operand 8399 states and 12558 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-11-20 12:11:31,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:31,801 INFO L93 Difference]: Finished difference Result 16753 states and 25071 transitions. [2022-11-20 12:11:31,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:11:31,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 81 [2022-11-20 12:11:31,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:31,821 INFO L225 Difference]: With dead ends: 16753 [2022-11-20 12:11:31,821 INFO L226 Difference]: Without dead ends: 8399 [2022-11-20 12:11:31,833 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 [2022-11-20 12:11:31,834 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 405 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:31,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 98 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:11:31,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8399 states. [2022-11-20 12:11:33,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8399 to 8399. [2022-11-20 12:11:33,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8399 states, 8398 states have (on average 1.4801143129316503) internal successors, (12430), 8398 states have internal predecessors, (12430), 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) [2022-11-20 12:11:33,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8399 states to 8399 states and 12430 transitions. [2022-11-20 12:11:33,441 INFO L78 Accepts]: Start accepts. Automaton has 8399 states and 12430 transitions. Word has length 81 [2022-11-20 12:11:33,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:33,442 INFO L495 AbstractCegarLoop]: Abstraction has 8399 states and 12430 transitions. [2022-11-20 12:11:33,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-11-20 12:11:33,443 INFO L276 IsEmpty]: Start isEmpty. Operand 8399 states and 12430 transitions. [2022-11-20 12:11:33,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 12:11:33,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:33,444 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] [2022-11-20 12:11:33,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:11:33,444 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:33,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:33,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1685151460, now seen corresponding path program 1 times [2022-11-20 12:11:33,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:33,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753001010] [2022-11-20 12:11:33,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:33,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:33,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:33,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:33,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753001010] [2022-11-20 12:11:33,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753001010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:33,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:33,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:11:33,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81689822] [2022-11-20 12:11:33,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:33,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:11:33,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:33,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:11:33,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:11:33,563 INFO L87 Difference]: Start difference. First operand 8399 states and 12430 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-11-20 12:11:34,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:34,700 INFO L93 Difference]: Finished difference Result 16753 states and 24815 transitions. [2022-11-20 12:11:34,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:11:34,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 81 [2022-11-20 12:11:34,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:34,716 INFO L225 Difference]: With dead ends: 16753 [2022-11-20 12:11:34,716 INFO L226 Difference]: Without dead ends: 8399 [2022-11-20 12:11:34,728 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 [2022-11-20 12:11:34,729 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 350 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:34,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 130 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:11:34,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8399 states. [2022-11-20 12:11:35,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8399 to 8399. [2022-11-20 12:11:35,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8399 states, 8398 states have (on average 1.4686830197666112) internal successors, (12334), 8398 states have internal predecessors, (12334), 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) [2022-11-20 12:11:35,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8399 states to 8399 states and 12334 transitions. [2022-11-20 12:11:35,974 INFO L78 Accepts]: Start accepts. Automaton has 8399 states and 12334 transitions. Word has length 81 [2022-11-20 12:11:35,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:35,974 INFO L495 AbstractCegarLoop]: Abstraction has 8399 states and 12334 transitions. [2022-11-20 12:11:35,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-11-20 12:11:35,975 INFO L276 IsEmpty]: Start isEmpty. Operand 8399 states and 12334 transitions. [2022-11-20 12:11:35,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 12:11:35,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:35,976 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] [2022-11-20 12:11:35,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:11:35,976 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:35,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:35,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1744283447, now seen corresponding path program 1 times [2022-11-20 12:11:35,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:35,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058669114] [2022-11-20 12:11:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:35,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:36,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:36,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:36,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058669114] [2022-11-20 12:11:36,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058669114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:36,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:36,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:11:36,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734253161] [2022-11-20 12:11:36,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:36,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:11:36,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:36,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:11:36,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:11:36,080 INFO L87 Difference]: Start difference. First operand 8399 states and 12334 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-11-20 12:11:38,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:38,089 INFO L93 Difference]: Finished difference Result 16753 states and 24623 transitions. [2022-11-20 12:11:38,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:11:38,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 81 [2022-11-20 12:11:38,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:38,104 INFO L225 Difference]: With dead ends: 16753 [2022-11-20 12:11:38,104 INFO L226 Difference]: Without dead ends: 8399 [2022-11-20 12:11:38,114 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 [2022-11-20 12:11:38,115 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 373 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:38,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 114 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:11:38,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8399 states. [2022-11-20 12:11:40,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8399 to 8399. [2022-11-20 12:11:40,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8399 states, 8398 states have (on average 1.4572517266015719) internal successors, (12238), 8398 states have internal predecessors, (12238), 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) [2022-11-20 12:11:40,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8399 states to 8399 states and 12238 transitions. [2022-11-20 12:11:40,106 INFO L78 Accepts]: Start accepts. Automaton has 8399 states and 12238 transitions. Word has length 81 [2022-11-20 12:11:40,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:40,106 INFO L495 AbstractCegarLoop]: Abstraction has 8399 states and 12238 transitions. [2022-11-20 12:11:40,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-11-20 12:11:40,107 INFO L276 IsEmpty]: Start isEmpty. Operand 8399 states and 12238 transitions. [2022-11-20 12:11:40,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 12:11:40,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:40,108 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] [2022-11-20 12:11:40,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:11:40,109 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:40,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:40,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1787820142, now seen corresponding path program 1 times [2022-11-20 12:11:40,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:40,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446132740] [2022-11-20 12:11:40,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:40,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:40,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:40,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:40,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446132740] [2022-11-20 12:11:40,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446132740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:40,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:40,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:11:40,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114833566] [2022-11-20 12:11:40,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:40,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:11:40,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:40,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:11:40,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:11:40,400 INFO L87 Difference]: Start difference. First operand 8399 states and 12238 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-11-20 12:11:43,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:43,439 INFO L93 Difference]: Finished difference Result 15165 states and 22034 transitions. [2022-11-20 12:11:43,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:11:43,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 81 [2022-11-20 12:11:43,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:43,463 INFO L225 Difference]: With dead ends: 15165 [2022-11-20 12:11:43,463 INFO L226 Difference]: Without dead ends: 15163 [2022-11-20 12:11:43,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:11:43,469 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 200 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:43,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 685 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:11:43,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15163 states. [2022-11-20 12:11:45,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15163 to 8655. [2022-11-20 12:11:45,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8655 states, 8654 states have (on average 1.440027732840305) internal successors, (12462), 8654 states have internal predecessors, (12462), 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) [2022-11-20 12:11:45,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8655 states to 8655 states and 12462 transitions. [2022-11-20 12:11:45,125 INFO L78 Accepts]: Start accepts. Automaton has 8655 states and 12462 transitions. Word has length 81 [2022-11-20 12:11:45,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:45,125 INFO L495 AbstractCegarLoop]: Abstraction has 8655 states and 12462 transitions. [2022-11-20 12:11:45,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-11-20 12:11:45,126 INFO L276 IsEmpty]: Start isEmpty. Operand 8655 states and 12462 transitions. [2022-11-20 12:11:45,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-20 12:11:45,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:45,131 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:45,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:11:45,131 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:45,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash 333029362, now seen corresponding path program 1 times [2022-11-20 12:11:45,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:45,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58404099] [2022-11-20 12:11:45,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:45,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:11:45,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:45,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58404099] [2022-11-20 12:11:45,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58404099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:45,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:45,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:11:45,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050550414] [2022-11-20 12:11:45,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:45,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:11:45,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:45,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:11:45,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:11:45,351 INFO L87 Difference]: Start difference. First operand 8655 states and 12462 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2022-11-20 12:11:54,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:54,267 INFO L93 Difference]: Finished difference Result 59197 states and 85365 transitions. [2022-11-20 12:11:54,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:11:54,268 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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 111 [2022-11-20 12:11:54,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:54,340 INFO L225 Difference]: With dead ends: 59197 [2022-11-20 12:11:54,340 INFO L226 Difference]: Without dead ends: 53307 [2022-11-20 12:11:54,357 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 [2022-11-20 12:11:54,358 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 1349 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:54,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 1612 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:11:54,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53307 states. [2022-11-20 12:11:58,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53307 to 15919. [2022-11-20 12:11:58,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15919 states, 15918 states have (on average 1.436235708003518) internal successors, (22862), 15918 states have internal predecessors, (22862), 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) [2022-11-20 12:11:58,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15919 states to 15919 states and 22862 transitions. [2022-11-20 12:11:58,179 INFO L78 Accepts]: Start accepts. Automaton has 15919 states and 22862 transitions. Word has length 111 [2022-11-20 12:11:58,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:58,180 INFO L495 AbstractCegarLoop]: Abstraction has 15919 states and 22862 transitions. [2022-11-20 12:11:58,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2022-11-20 12:11:58,180 INFO L276 IsEmpty]: Start isEmpty. Operand 15919 states and 22862 transitions. [2022-11-20 12:11:58,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-20 12:11:58,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:58,186 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:58,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:11:58,186 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:58,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:58,187 INFO L85 PathProgramCache]: Analyzing trace with hash -317771784, now seen corresponding path program 1 times [2022-11-20 12:11:58,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:58,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799973664] [2022-11-20 12:11:58,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:58,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:58,429 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:11:58,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:58,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799973664] [2022-11-20 12:11:58,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799973664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:58,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:58,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:11:58,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907687696] [2022-11-20 12:11:58,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:58,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:11:58,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:58,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:11:58,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:11:58,432 INFO L87 Difference]: Start difference. First operand 15919 states and 22862 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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) [2022-11-20 12:12:11,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:11,214 INFO L93 Difference]: Finished difference Result 67805 states and 97717 transitions. [2022-11-20 12:12:11,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:12:11,215 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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 111 [2022-11-20 12:12:11,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:11,299 INFO L225 Difference]: With dead ends: 67805 [2022-11-20 12:12:11,299 INFO L226 Difference]: Without dead ends: 59195 [2022-11-20 12:12:11,312 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 [2022-11-20 12:12:11,313 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 1348 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:11,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1348 Valid, 1584 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:12:11,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59195 states. [2022-11-20 12:12:17,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59195 to 27471. [2022-11-20 12:12:17,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27471 states, 27470 states have (on average 1.433345467783036) internal successors, (39374), 27470 states have internal predecessors, (39374), 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) [2022-11-20 12:12:18,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27471 states to 27471 states and 39374 transitions. [2022-11-20 12:12:18,025 INFO L78 Accepts]: Start accepts. Automaton has 27471 states and 39374 transitions. Word has length 111 [2022-11-20 12:12:18,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:18,025 INFO L495 AbstractCegarLoop]: Abstraction has 27471 states and 39374 transitions. [2022-11-20 12:12:18,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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) [2022-11-20 12:12:18,025 INFO L276 IsEmpty]: Start isEmpty. Operand 27471 states and 39374 transitions. [2022-11-20 12:12:18,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-20 12:12:18,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:18,031 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:18,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:12:18,031 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:18,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:18,032 INFO L85 PathProgramCache]: Analyzing trace with hash 2001758078, now seen corresponding path program 1 times [2022-11-20 12:12:18,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:12:18,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459099955] [2022-11-20 12:12:18,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:18,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:12:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:12:18,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:12:18,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459099955] [2022-11-20 12:12:18,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459099955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:18,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:18,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:12:18,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201645253] [2022-11-20 12:12:18,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:18,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:12:18,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:12:18,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:12:18,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:12:18,285 INFO L87 Difference]: Start difference. First operand 27471 states and 39374 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 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) [2022-11-20 12:12:34,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:34,930 INFO L93 Difference]: Finished difference Result 76413 states and 110037 transitions. [2022-11-20 12:12:34,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:12:34,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 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 111 [2022-11-20 12:12:34,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:35,020 INFO L225 Difference]: With dead ends: 76413 [2022-11-20 12:12:35,020 INFO L226 Difference]: Without dead ends: 67803 [2022-11-20 12:12:35,035 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 [2022-11-20 12:12:35,035 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 1434 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:35,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1434 Valid, 1490 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:12:35,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67803 states. [2022-11-20 12:12:45,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67803 to 36079. [2022-11-20 12:12:45,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36079 states, 36078 states have (on average 1.4328399578690614) internal successors, (51694), 36078 states have internal predecessors, (51694), 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) [2022-11-20 12:12:45,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36079 states to 36079 states and 51694 transitions. [2022-11-20 12:12:45,408 INFO L78 Accepts]: Start accepts. Automaton has 36079 states and 51694 transitions. Word has length 111 [2022-11-20 12:12:45,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:45,408 INFO L495 AbstractCegarLoop]: Abstraction has 36079 states and 51694 transitions. [2022-11-20 12:12:45,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 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) [2022-11-20 12:12:45,409 INFO L276 IsEmpty]: Start isEmpty. Operand 36079 states and 51694 transitions. [2022-11-20 12:12:45,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-20 12:12:45,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:45,420 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:45,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:12:45,421 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:45,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:45,421 INFO L85 PathProgramCache]: Analyzing trace with hash 277216016, now seen corresponding path program 1 times [2022-11-20 12:12:45,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:12:45,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018404046] [2022-11-20 12:12:45,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:45,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:12:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:45,814 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 12:12:45,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:12:45,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018404046] [2022-11-20 12:12:45,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018404046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:45,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:45,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:12:45,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466999534] [2022-11-20 12:12:45,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:45,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:12:45,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:12:45,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:12:45,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:12:45,818 INFO L87 Difference]: Start difference. First operand 36079 states and 51694 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 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)