./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_66177287-7316-432b-af77-e873751098df/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66177287-7316-432b-af77-e873751098df/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66177287-7316-432b-af77-e873751098df/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66177287-7316-432b-af77-e873751098df/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66177287-7316-432b-af77-e873751098df/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66177287-7316-432b-af77-e873751098df/bin/uautomizer-uyxdKDjOR8 --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 e434f2d86227d38c1c2a04ff8bca16de95195c35648228e2b922536dedadd129 --- 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-2329fc7 [2022-12-13 17:26:11,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:26:11,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:26:11,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:26:11,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:26:11,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:26:11,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:26:11,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:26:11,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:26:11,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:26:11,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:26:11,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:26:11,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:26:11,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:26:11,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:26:11,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:26:11,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:26:11,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:26:11,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:26:11,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:26:11,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:26:11,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:26:11,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:26:11,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:26:11,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:26:11,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:26:11,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:26:11,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:26:11,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:26:11,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:26:11,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:26:11,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:26:11,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:26:11,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:26:11,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:26:11,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:26:11,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:26:11,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:26:11,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:26:11,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:26:11,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:26:11,483 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66177287-7316-432b-af77-e873751098df/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 17:26:11,502 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:26:11,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:26:11,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:26:11,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:26:11,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:26:11,504 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:26:11,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:26:11,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:26:11,505 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:26:11,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:26:11,505 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:26:11,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:26:11,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:26:11,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:26:11,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:26:11,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:26:11,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:26:11,506 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:26:11,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:26:11,507 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:26:11,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:26:11,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:26:11,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:26:11,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:26:11,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:26:11,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:26:11,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:26:11,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:26:11,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:26:11,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:26:11,509 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:26:11,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:26:11,509 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:26:11,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:26:11,510 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:26:11,510 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_66177287-7316-432b-af77-e873751098df/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66177287-7316-432b-af77-e873751098df/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e434f2d86227d38c1c2a04ff8bca16de95195c35648228e2b922536dedadd129 [2022-12-13 17:26:11,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:26:11,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:26:11,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:26:11,742 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:26:11,742 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:26:11,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66177287-7316-432b-af77-e873751098df/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c [2022-12-13 17:26:14,286 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:26:14,483 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:26:14,484 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66177287-7316-432b-af77-e873751098df/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c [2022-12-13 17:26:14,494 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66177287-7316-432b-af77-e873751098df/bin/uautomizer-uyxdKDjOR8/data/88ce1dbbc/5eb06083070a4d879aef6a45406781a7/FLAGed52f713d [2022-12-13 17:26:14,505 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66177287-7316-432b-af77-e873751098df/bin/uautomizer-uyxdKDjOR8/data/88ce1dbbc/5eb06083070a4d879aef6a45406781a7 [2022-12-13 17:26:14,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:26:14,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:26:14,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:26:14,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:26:14,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:26:14,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:26:14" (1/1) ... [2022-12-13 17:26:14,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@314e88ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:14, skipping insertion in model container [2022-12-13 17:26:14,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:26:14" (1/1) ... [2022-12-13 17:26:14,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:26:14,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:26:14,831 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_66177287-7316-432b-af77-e873751098df/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c[31172,31185] [2022-12-13 17:26:14,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:26:14,847 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:26:14,918 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_66177287-7316-432b-af77-e873751098df/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c[31172,31185] [2022-12-13 17:26:14,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:26:14,935 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:26:14,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:14 WrapperNode [2022-12-13 17:26:14,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:26:14,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:26:14,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:26:14,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:26:14,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:14" (1/1) ... [2022-12-13 17:26:14,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:14" (1/1) ... [2022-12-13 17:26:14,998 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 960 [2022-12-13 17:26:14,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:26:14,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:26:14,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:26:14,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:26:15,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:14" (1/1) ... [2022-12-13 17:26:15,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:14" (1/1) ... [2022-12-13 17:26:15,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:14" (1/1) ... [2022-12-13 17:26:15,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:14" (1/1) ... [2022-12-13 17:26:15,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:14" (1/1) ... [2022-12-13 17:26:15,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:14" (1/1) ... [2022-12-13 17:26:15,042 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:14" (1/1) ... [2022-12-13 17:26:15,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:14" (1/1) ... [2022-12-13 17:26:15,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:26:15,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:26:15,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:26:15,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:26:15,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:14" (1/1) ... [2022-12-13 17:26:15,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:26:15,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66177287-7316-432b-af77-e873751098df/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:26:15,084 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66177287-7316-432b-af77-e873751098df/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:26:15,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66177287-7316-432b-af77-e873751098df/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:26:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:26:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:26:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:26:15,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:26:15,221 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:26:15,223 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:26:15,938 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:26:15,949 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:26:15,949 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 17:26:15,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:26:15 BoogieIcfgContainer [2022-12-13 17:26:15,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:26:15,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:26:15,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:26:15,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:26:15,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:26:14" (1/3) ... [2022-12-13 17:26:15,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d7c30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:26:15, skipping insertion in model container [2022-12-13 17:26:15,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:14" (2/3) ... [2022-12-13 17:26:15,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d7c30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:26:15, skipping insertion in model container [2022-12-13 17:26:15,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:26:15" (3/3) ... [2022-12-13 17:26:15,961 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c [2022-12-13 17:26:15,978 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:26:15,978 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 17:26:16,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:26:16,034 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;@406b628e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:26:16,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 17:26:16,039 INFO L276 IsEmpty]: Start isEmpty. Operand has 308 states, 306 states have (on average 1.8235294117647058) internal successors, (558), 307 states have internal predecessors, (558), 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) [2022-12-13 17:26:16,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 17:26:16,051 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:16,051 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] [2022-12-13 17:26:16,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:16,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:16,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1037994416, now seen corresponding path program 1 times [2022-12-13 17:26:16,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:16,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284403206] [2022-12-13 17:26:16,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:16,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:16,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:16,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:16,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284403206] [2022-12-13 17:26:16,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284403206] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:16,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:16,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:26:16,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666584365] [2022-12-13 17:26:16,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:16,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 17:26:16,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:16,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 17:26:16,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 17:26:16,367 INFO L87 Difference]: Start difference. First operand has 308 states, 306 states have (on average 1.8235294117647058) internal successors, (558), 307 states have internal predecessors, (558), 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 2 states, 2 states have (on average 38.5) internal successors, (77), 2 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) [2022-12-13 17:26:16,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:16,409 INFO L93 Difference]: Finished difference Result 417 states and 751 transitions. [2022-12-13 17:26:16,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 17:26:16,411 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 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 [2022-12-13 17:26:16,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:16,421 INFO L225 Difference]: With dead ends: 417 [2022-12-13 17:26:16,422 INFO L226 Difference]: Without dead ends: 304 [2022-12-13 17:26:16,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 17:26:16,427 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:16,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:26:16,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-12-13 17:26:16,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2022-12-13 17:26:16,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.8184818481848184) internal successors, (551), 303 states have internal predecessors, (551), 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) [2022-12-13 17:26:16,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 551 transitions. [2022-12-13 17:26:16,475 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 551 transitions. Word has length 77 [2022-12-13 17:26:16,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:16,476 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 551 transitions. [2022-12-13 17:26:16,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 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) [2022-12-13 17:26:16,477 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 551 transitions. [2022-12-13 17:26:16,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 17:26:16,479 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:16,480 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] [2022-12-13 17:26:16,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:26:16,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:16,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:16,481 INFO L85 PathProgramCache]: Analyzing trace with hash 903980910, now seen corresponding path program 1 times [2022-12-13 17:26:16,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:16,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266890711] [2022-12-13 17:26:16,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:16,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:16,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:16,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:16,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266890711] [2022-12-13 17:26:16,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266890711] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:16,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:16,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:26:16,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402790471] [2022-12-13 17:26:16,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:16,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:26:16,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:16,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:26:16,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:26:16,692 INFO L87 Difference]: Start difference. First operand 304 states and 551 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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) [2022-12-13 17:26:16,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:16,787 INFO L93 Difference]: Finished difference Result 416 states and 744 transitions. [2022-12-13 17:26:16,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:26:16,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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 [2022-12-13 17:26:16,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:16,789 INFO L225 Difference]: With dead ends: 416 [2022-12-13 17:26:16,789 INFO L226 Difference]: Without dead ends: 304 [2022-12-13 17:26:16,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:26:16,790 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 3 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:16,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2147 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:26:16,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-12-13 17:26:16,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2022-12-13 17:26:16,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.6666666666666667) internal successors, (505), 303 states have internal predecessors, (505), 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) [2022-12-13 17:26:16,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 505 transitions. [2022-12-13 17:26:16,800 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 505 transitions. Word has length 77 [2022-12-13 17:26:16,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:16,800 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 505 transitions. [2022-12-13 17:26:16,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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) [2022-12-13 17:26:16,800 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 505 transitions. [2022-12-13 17:26:16,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-13 17:26:16,803 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:16,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:16,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:26:16,803 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:16,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:16,804 INFO L85 PathProgramCache]: Analyzing trace with hash 683572900, now seen corresponding path program 1 times [2022-12-13 17:26:16,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:16,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776414130] [2022-12-13 17:26:16,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:16,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:16,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:16,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:16,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776414130] [2022-12-13 17:26:16,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776414130] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:16,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:16,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:26:16,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997914001] [2022-12-13 17:26:16,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:16,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:26:16,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:16,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:26:16,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:26:16,915 INFO L87 Difference]: Start difference. First operand 304 states and 505 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2022-12-13 17:26:16,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:16,959 INFO L93 Difference]: Finished difference Result 508 states and 861 transitions. [2022-12-13 17:26:16,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:26:16,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 122 [2022-12-13 17:26:16,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:16,961 INFO L225 Difference]: With dead ends: 508 [2022-12-13 17:26:16,961 INFO L226 Difference]: Without dead ends: 400 [2022-12-13 17:26:16,962 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 [2022-12-13 17:26:16,962 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 158 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:16,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 946 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:26:16,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-12-13 17:26:16,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 397. [2022-12-13 17:26:16,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 1.6767676767676767) internal successors, (664), 396 states have internal predecessors, (664), 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) [2022-12-13 17:26:16,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 664 transitions. [2022-12-13 17:26:16,987 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 664 transitions. Word has length 122 [2022-12-13 17:26:16,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:16,987 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 664 transitions. [2022-12-13 17:26:16,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2022-12-13 17:26:16,988 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 664 transitions. [2022-12-13 17:26:16,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-12-13 17:26:16,991 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:16,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:16,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:26:16,991 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:16,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash 879011145, now seen corresponding path program 1 times [2022-12-13 17:26:16,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:16,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611556010] [2022-12-13 17:26:16,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:16,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:17,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:17,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:17,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611556010] [2022-12-13 17:26:17,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611556010] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:17,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:17,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:26:17,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928043675] [2022-12-13 17:26:17,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:17,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:26:17,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:17,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:26:17,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:26:17,091 INFO L87 Difference]: Start difference. First operand 397 states and 664 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2022-12-13 17:26:17,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:17,119 INFO L93 Difference]: Finished difference Result 779 states and 1324 transitions. [2022-12-13 17:26:17,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:26:17,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 125 [2022-12-13 17:26:17,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:17,124 INFO L225 Difference]: With dead ends: 779 [2022-12-13 17:26:17,124 INFO L226 Difference]: Without dead ends: 578 [2022-12-13 17:26:17,125 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 [2022-12-13 17:26:17,126 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 159 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:17,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 959 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:26:17,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-12-13 17:26:17,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 574. [2022-12-13 17:26:17,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 1.6910994764397906) internal successors, (969), 573 states have internal predecessors, (969), 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) [2022-12-13 17:26:17,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 969 transitions. [2022-12-13 17:26:17,141 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 969 transitions. Word has length 125 [2022-12-13 17:26:17,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:17,142 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 969 transitions. [2022-12-13 17:26:17,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2022-12-13 17:26:17,142 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 969 transitions. [2022-12-13 17:26:17,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-13 17:26:17,143 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:17,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:17,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 17:26:17,143 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:17,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:17,144 INFO L85 PathProgramCache]: Analyzing trace with hash -329090256, now seen corresponding path program 1 times [2022-12-13 17:26:17,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:17,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924156152] [2022-12-13 17:26:17,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:17,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:17,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:17,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:17,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924156152] [2022-12-13 17:26:17,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924156152] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:17,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:17,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:26:17,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784001467] [2022-12-13 17:26:17,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:17,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:26:17,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:17,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:26:17,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:26:17,229 INFO L87 Difference]: Start difference. First operand 574 states and 969 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2022-12-13 17:26:17,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:17,264 INFO L93 Difference]: Finished difference Result 1290 states and 2203 transitions. [2022-12-13 17:26:17,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:26:17,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 128 [2022-12-13 17:26:17,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:17,266 INFO L225 Difference]: With dead ends: 1290 [2022-12-13 17:26:17,266 INFO L226 Difference]: Without dead ends: 912 [2022-12-13 17:26:17,267 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 [2022-12-13 17:26:17,268 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 152 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:17,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 960 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:26:17,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2022-12-13 17:26:17,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 906. [2022-12-13 17:26:17,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 905 states have (on average 1.6983425414364641) internal successors, (1537), 905 states have internal predecessors, (1537), 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) [2022-12-13 17:26:17,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1537 transitions. [2022-12-13 17:26:17,295 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1537 transitions. Word has length 128 [2022-12-13 17:26:17,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:17,295 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 1537 transitions. [2022-12-13 17:26:17,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2022-12-13 17:26:17,295 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1537 transitions. [2022-12-13 17:26:17,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-12-13 17:26:17,296 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:17,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:17,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:26:17,297 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:17,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:17,297 INFO L85 PathProgramCache]: Analyzing trace with hash 232028309, now seen corresponding path program 1 times [2022-12-13 17:26:17,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:17,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390963167] [2022-12-13 17:26:17,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:17,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:17,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:17,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:17,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390963167] [2022-12-13 17:26:17,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390963167] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:17,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:17,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:26:17,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162749796] [2022-12-13 17:26:17,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:17,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:26:17,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:17,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:26:17,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:26:17,383 INFO L87 Difference]: Start difference. First operand 906 states and 1537 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2022-12-13 17:26:17,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:17,427 INFO L93 Difference]: Finished difference Result 2246 states and 3835 transitions. [2022-12-13 17:26:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:26:17,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 131 [2022-12-13 17:26:17,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:17,431 INFO L225 Difference]: With dead ends: 2246 [2022-12-13 17:26:17,432 INFO L226 Difference]: Without dead ends: 1536 [2022-12-13 17:26:17,433 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 [2022-12-13 17:26:17,433 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 145 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:17,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 961 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:26:17,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2022-12-13 17:26:17,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1526. [2022-12-13 17:26:17,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1525 states have (on average 1.6977049180327868) internal successors, (2589), 1525 states have internal predecessors, (2589), 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) [2022-12-13 17:26:17,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2589 transitions. [2022-12-13 17:26:17,470 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2589 transitions. Word has length 131 [2022-12-13 17:26:17,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:17,470 INFO L495 AbstractCegarLoop]: Abstraction has 1526 states and 2589 transitions. [2022-12-13 17:26:17,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2022-12-13 17:26:17,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2589 transitions. [2022-12-13 17:26:17,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 17:26:17,472 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:17,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:17,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 17:26:17,472 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:17,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:17,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1320064068, now seen corresponding path program 1 times [2022-12-13 17:26:17,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:17,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421779037] [2022-12-13 17:26:17,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:17,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:17,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:17,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421779037] [2022-12-13 17:26:17,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421779037] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:17,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:17,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:26:17,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752748627] [2022-12-13 17:26:17,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:17,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:26:17,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:17,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:26:17,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:26:17,655 INFO L87 Difference]: Start difference. First operand 1526 states and 2589 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 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) [2022-12-13 17:26:18,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:18,071 INFO L93 Difference]: Finished difference Result 7794 states and 13413 transitions. [2022-12-13 17:26:18,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:26:18,071 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 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 134 [2022-12-13 17:26:18,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:18,094 INFO L225 Difference]: With dead ends: 7794 [2022-12-13 17:26:18,094 INFO L226 Difference]: Without dead ends: 6464 [2022-12-13 17:26:18,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:26:18,098 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 1761 mSDsluCounter, 2993 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 3491 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:18,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1761 Valid, 3491 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:26:18,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6464 states. [2022-12-13 17:26:18,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6464 to 2766. [2022-12-13 17:26:18,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2766 states, 2765 states have (on average 1.7019891500904158) internal successors, (4706), 2765 states have internal predecessors, (4706), 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) [2022-12-13 17:26:18,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 4706 transitions. [2022-12-13 17:26:18,274 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 4706 transitions. Word has length 134 [2022-12-13 17:26:18,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:18,275 INFO L495 AbstractCegarLoop]: Abstraction has 2766 states and 4706 transitions. [2022-12-13 17:26:18,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 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) [2022-12-13 17:26:18,275 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 4706 transitions. [2022-12-13 17:26:18,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-13 17:26:18,277 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:18,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:18,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 17:26:18,278 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:18,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:18,278 INFO L85 PathProgramCache]: Analyzing trace with hash -66919769, now seen corresponding path program 1 times [2022-12-13 17:26:18,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:18,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493295444] [2022-12-13 17:26:18,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:18,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:18,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:18,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493295444] [2022-12-13 17:26:18,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493295444] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:18,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:18,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:26:18,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385426588] [2022-12-13 17:26:18,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:18,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:26:18,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:18,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:26:18,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:26:18,414 INFO L87 Difference]: Start difference. First operand 2766 states and 4706 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2022-12-13 17:26:18,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:18,694 INFO L93 Difference]: Finished difference Result 8058 states and 13824 transitions. [2022-12-13 17:26:18,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:26:18,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 135 [2022-12-13 17:26:18,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:18,728 INFO L225 Difference]: With dead ends: 8058 [2022-12-13 17:26:18,728 INFO L226 Difference]: Without dead ends: 5488 [2022-12-13 17:26:18,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:26:18,734 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 547 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:18,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 1618 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:26:18,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5488 states. [2022-12-13 17:26:18,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5488 to 4110. [2022-12-13 17:26:18,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4110 states, 4109 states have (on average 1.7057678267218301) internal successors, (7009), 4109 states have internal predecessors, (7009), 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) [2022-12-13 17:26:19,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4110 states to 4110 states and 7009 transitions. [2022-12-13 17:26:19,004 INFO L78 Accepts]: Start accepts. Automaton has 4110 states and 7009 transitions. Word has length 135 [2022-12-13 17:26:19,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:19,004 INFO L495 AbstractCegarLoop]: Abstraction has 4110 states and 7009 transitions. [2022-12-13 17:26:19,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2022-12-13 17:26:19,005 INFO L276 IsEmpty]: Start isEmpty. Operand 4110 states and 7009 transitions. [2022-12-13 17:26:19,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-12-13 17:26:19,007 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:19,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:19,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 17:26:19,008 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:19,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:19,009 INFO L85 PathProgramCache]: Analyzing trace with hash 294852179, now seen corresponding path program 1 times [2022-12-13 17:26:19,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:19,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044725720] [2022-12-13 17:26:19,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:19,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:19,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:19,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:19,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044725720] [2022-12-13 17:26:19,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044725720] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:19,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:19,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:26:19,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747607537] [2022-12-13 17:26:19,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:19,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:26:19,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:19,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:26:19,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:26:19,134 INFO L87 Difference]: Start difference. First operand 4110 states and 7009 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2022-12-13 17:26:19,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:19,385 INFO L93 Difference]: Finished difference Result 12032 states and 20604 transitions. [2022-12-13 17:26:19,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:26:19,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 136 [2022-12-13 17:26:19,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:19,422 INFO L225 Difference]: With dead ends: 12032 [2022-12-13 17:26:19,423 INFO L226 Difference]: Without dead ends: 8118 [2022-12-13 17:26:19,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:26:19,427 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 545 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:19,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 1619 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:26:19,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8118 states. [2022-12-13 17:26:19,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8118 to 6090. [2022-12-13 17:26:19,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6090 states, 6089 states have (on average 1.7032353424207587) internal successors, (10371), 6089 states have internal predecessors, (10371), 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) [2022-12-13 17:26:19,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6090 states to 6090 states and 10371 transitions. [2022-12-13 17:26:19,637 INFO L78 Accepts]: Start accepts. Automaton has 6090 states and 10371 transitions. Word has length 136 [2022-12-13 17:26:19,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:19,637 INFO L495 AbstractCegarLoop]: Abstraction has 6090 states and 10371 transitions. [2022-12-13 17:26:19,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2022-12-13 17:26:19,637 INFO L276 IsEmpty]: Start isEmpty. Operand 6090 states and 10371 transitions. [2022-12-13 17:26:19,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-12-13 17:26:19,639 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:19,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:19,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 17:26:19,639 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:19,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:19,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1206114978, now seen corresponding path program 1 times [2022-12-13 17:26:19,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:19,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592855415] [2022-12-13 17:26:19,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:19,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:19,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:19,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592855415] [2022-12-13 17:26:19,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592855415] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:19,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:19,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:26:19,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694841235] [2022-12-13 17:26:19,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:19,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:26:19,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:19,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:26:19,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:26:19,714 INFO L87 Difference]: Start difference. First operand 6090 states and 10371 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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) [2022-12-13 17:26:20,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:20,176 INFO L93 Difference]: Finished difference Result 17912 states and 30612 transitions. [2022-12-13 17:26:20,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:26:20,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 137 [2022-12-13 17:26:20,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:20,203 INFO L225 Difference]: With dead ends: 17912 [2022-12-13 17:26:20,203 INFO L226 Difference]: Without dead ends: 12018 [2022-12-13 17:26:20,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:26:20,211 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 543 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:20,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1630 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:26:20,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12018 states. [2022-12-13 17:26:20,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12018 to 9020. [2022-12-13 17:26:20,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9020 states, 9019 states have (on average 1.700299368000887) internal successors, (15335), 9019 states have internal predecessors, (15335), 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) [2022-12-13 17:26:20,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9020 states to 9020 states and 15335 transitions. [2022-12-13 17:26:20,624 INFO L78 Accepts]: Start accepts. Automaton has 9020 states and 15335 transitions. Word has length 137 [2022-12-13 17:26:20,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:20,624 INFO L495 AbstractCegarLoop]: Abstraction has 9020 states and 15335 transitions. [2022-12-13 17:26:20,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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) [2022-12-13 17:26:20,625 INFO L276 IsEmpty]: Start isEmpty. Operand 9020 states and 15335 transitions. [2022-12-13 17:26:20,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-13 17:26:20,627 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:20,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:20,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 17:26:20,627 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:20,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:20,628 INFO L85 PathProgramCache]: Analyzing trace with hash 578383914, now seen corresponding path program 1 times [2022-12-13 17:26:20,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:20,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667400631] [2022-12-13 17:26:20,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:20,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:20,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:20,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:20,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667400631] [2022-12-13 17:26:20,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667400631] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:20,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:20,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:26:20,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955049799] [2022-12-13 17:26:20,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:20,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:26:20,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:20,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:26:20,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:26:20,708 INFO L87 Difference]: Start difference. First operand 9020 states and 15335 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:26:21,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:21,062 INFO L93 Difference]: Finished difference Result 20280 states and 34462 transitions. [2022-12-13 17:26:21,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:26:21,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-12-13 17:26:21,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:21,092 INFO L225 Difference]: With dead ends: 20280 [2022-12-13 17:26:21,092 INFO L226 Difference]: Without dead ends: 14052 [2022-12-13 17:26:21,100 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 [2022-12-13 17:26:21,101 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 151 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1054 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 [2022-12-13 17:26:21,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1054 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:26:21,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14052 states. [2022-12-13 17:26:21,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14052 to 14050. [2022-12-13 17:26:21,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14050 states, 14049 states have (on average 1.6893729091038507) internal successors, (23734), 14049 states have internal predecessors, (23734), 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) [2022-12-13 17:26:21,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14050 states to 14050 states and 23734 transitions. [2022-12-13 17:26:21,651 INFO L78 Accepts]: Start accepts. Automaton has 14050 states and 23734 transitions. Word has length 138 [2022-12-13 17:26:21,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:21,652 INFO L495 AbstractCegarLoop]: Abstraction has 14050 states and 23734 transitions. [2022-12-13 17:26:21,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:26:21,652 INFO L276 IsEmpty]: Start isEmpty. Operand 14050 states and 23734 transitions. [2022-12-13 17:26:21,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-13 17:26:21,655 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:21,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:21,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 17:26:21,655 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:21,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:21,656 INFO L85 PathProgramCache]: Analyzing trace with hash 942917262, now seen corresponding path program 1 times [2022-12-13 17:26:21,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:21,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80296494] [2022-12-13 17:26:21,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:21,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:21,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:21,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:21,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80296494] [2022-12-13 17:26:21,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80296494] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:21,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:21,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:26:21,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847253601] [2022-12-13 17:26:21,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:21,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:26:21,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:21,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:26:21,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:26:21,725 INFO L87 Difference]: Start difference. First operand 14050 states and 23734 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:26:22,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:22,169 INFO L93 Difference]: Finished difference Result 27936 states and 47208 transitions. [2022-12-13 17:26:22,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:26:22,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-12-13 17:26:22,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:22,197 INFO L225 Difference]: With dead ends: 27936 [2022-12-13 17:26:22,197 INFO L226 Difference]: Without dead ends: 20156 [2022-12-13 17:26:22,204 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 [2022-12-13 17:26:22,205 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 144 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1040 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 [2022-12-13 17:26:22,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1040 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:26:22,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20156 states. [2022-12-13 17:26:22,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20156 to 20154. [2022-12-13 17:26:22,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20154 states, 20153 states have (on average 1.6800476355877536) internal successors, (33858), 20153 states have internal predecessors, (33858), 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) [2022-12-13 17:26:22,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20154 states to 20154 states and 33858 transitions. [2022-12-13 17:26:22,898 INFO L78 Accepts]: Start accepts. Automaton has 20154 states and 33858 transitions. Word has length 138 [2022-12-13 17:26:22,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:22,899 INFO L495 AbstractCegarLoop]: Abstraction has 20154 states and 33858 transitions. [2022-12-13 17:26:22,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:26:22,899 INFO L276 IsEmpty]: Start isEmpty. Operand 20154 states and 33858 transitions. [2022-12-13 17:26:22,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-13 17:26:22,900 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:22,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:22,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 17:26:22,900 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:22,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:22,901 INFO L85 PathProgramCache]: Analyzing trace with hash -322452246, now seen corresponding path program 1 times [2022-12-13 17:26:22,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:22,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928516105] [2022-12-13 17:26:22,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:22,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:22,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:22,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:22,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928516105] [2022-12-13 17:26:22,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928516105] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:22,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:22,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:26:22,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973280946] [2022-12-13 17:26:22,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:22,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:26:22,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:22,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:26:22,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:26:22,997 INFO L87 Difference]: Start difference. First operand 20154 states and 33858 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:26:23,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:23,999 INFO L93 Difference]: Finished difference Result 63910 states and 107601 transitions. [2022-12-13 17:26:23,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:26:23,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-12-13 17:26:24,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:24,060 INFO L225 Difference]: With dead ends: 63910 [2022-12-13 17:26:24,060 INFO L226 Difference]: Without dead ends: 44238 [2022-12-13 17:26:24,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:26:24,077 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 541 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:24,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 1621 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:26:24,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44238 states. [2022-12-13 17:26:25,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44238 to 32116. [2022-12-13 17:26:25,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32116 states, 32115 states have (on average 1.6749182624941616) internal successors, (53790), 32115 states have internal predecessors, (53790), 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) [2022-12-13 17:26:25,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32116 states to 32116 states and 53790 transitions. [2022-12-13 17:26:25,194 INFO L78 Accepts]: Start accepts. Automaton has 32116 states and 53790 transitions. Word has length 138 [2022-12-13 17:26:25,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:25,194 INFO L495 AbstractCegarLoop]: Abstraction has 32116 states and 53790 transitions. [2022-12-13 17:26:25,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:26:25,194 INFO L276 IsEmpty]: Start isEmpty. Operand 32116 states and 53790 transitions. [2022-12-13 17:26:25,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-13 17:26:25,195 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:25,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:25,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 17:26:25,196 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:25,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:25,196 INFO L85 PathProgramCache]: Analyzing trace with hash 74120974, now seen corresponding path program 1 times [2022-12-13 17:26:25,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:25,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742494284] [2022-12-13 17:26:25,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:25,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:25,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:25,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:25,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742494284] [2022-12-13 17:26:25,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742494284] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:25,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:25,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:26:25,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789280288] [2022-12-13 17:26:25,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:25,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:26:25,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:25,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:26:25,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:26:25,267 INFO L87 Difference]: Start difference. First operand 32116 states and 53790 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:26:26,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:26,498 INFO L93 Difference]: Finished difference Result 71544 states and 119740 transitions. [2022-12-13 17:26:26,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:26:26,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-12-13 17:26:26,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:26,555 INFO L225 Difference]: With dead ends: 71544 [2022-12-13 17:26:26,556 INFO L226 Difference]: Without dead ends: 48902 [2022-12-13 17:26:26,570 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 [2022-12-13 17:26:26,571 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 158 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1090 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 [2022-12-13 17:26:26,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 1090 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:26:26,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48902 states. [2022-12-13 17:26:28,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48902 to 48900. [2022-12-13 17:26:28,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48900 states, 48899 states have (on average 1.6619562772244831) internal successors, (81268), 48899 states have internal predecessors, (81268), 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) [2022-12-13 17:26:28,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48900 states to 48900 states and 81268 transitions. [2022-12-13 17:26:28,520 INFO L78 Accepts]: Start accepts. Automaton has 48900 states and 81268 transitions. Word has length 138 [2022-12-13 17:26:28,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:28,520 INFO L495 AbstractCegarLoop]: Abstraction has 48900 states and 81268 transitions. [2022-12-13 17:26:28,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:26:28,520 INFO L276 IsEmpty]: Start isEmpty. Operand 48900 states and 81268 transitions. [2022-12-13 17:26:28,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-13 17:26:28,521 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:28,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:28,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 17:26:28,521 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:28,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:28,522 INFO L85 PathProgramCache]: Analyzing trace with hash -9867092, now seen corresponding path program 1 times [2022-12-13 17:26:28,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:28,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878828422] [2022-12-13 17:26:28,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:28,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:28,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:28,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:28,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878828422] [2022-12-13 17:26:28,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878828422] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:28,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:28,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:26:28,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12302112] [2022-12-13 17:26:28,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:28,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:26:28,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:28,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:26:28,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:26:28,568 INFO L87 Difference]: Start difference. First operand 48900 states and 81268 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:26:30,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:30,519 INFO L93 Difference]: Finished difference Result 110025 states and 183600 transitions. [2022-12-13 17:26:30,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:26:30,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-12-13 17:26:30,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:30,608 INFO L225 Difference]: With dead ends: 110025 [2022-12-13 17:26:30,608 INFO L226 Difference]: Without dead ends: 74764 [2022-12-13 17:26:30,632 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 [2022-12-13 17:26:30,633 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 165 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1118 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 [2022-12-13 17:26:30,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1118 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:26:30,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74764 states. [2022-12-13 17:26:33,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74764 to 74762. [2022-12-13 17:26:33,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74762 states, 74761 states have (on average 1.6525193616992817) internal successors, (123544), 74761 states have internal predecessors, (123544), 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) [2022-12-13 17:26:33,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74762 states to 74762 states and 123544 transitions. [2022-12-13 17:26:33,300 INFO L78 Accepts]: Start accepts. Automaton has 74762 states and 123544 transitions. Word has length 138 [2022-12-13 17:26:33,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:33,300 INFO L495 AbstractCegarLoop]: Abstraction has 74762 states and 123544 transitions. [2022-12-13 17:26:33,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:26:33,300 INFO L276 IsEmpty]: Start isEmpty. Operand 74762 states and 123544 transitions. [2022-12-13 17:26:33,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-13 17:26:33,301 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:33,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:33,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 17:26:33,302 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:33,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:33,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1439854402, now seen corresponding path program 1 times [2022-12-13 17:26:33,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:33,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27609929] [2022-12-13 17:26:33,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:33,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:33,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:33,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:33,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27609929] [2022-12-13 17:26:33,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27609929] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:33,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:33,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:26:33,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457699357] [2022-12-13 17:26:33,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:33,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:26:33,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:33,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:26:33,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:26:33,545 INFO L87 Difference]: Start difference. First operand 74762 states and 123544 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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) [2022-12-13 17:26:36,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:36,451 INFO L93 Difference]: Finished difference Result 149298 states and 246723 transitions. [2022-12-13 17:26:36,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:26:36,452 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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 140 [2022-12-13 17:26:36,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:36,548 INFO L225 Difference]: With dead ends: 149298 [2022-12-13 17:26:36,548 INFO L226 Difference]: Without dead ends: 74764 [2022-12-13 17:26:36,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:26:36,590 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 591 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:36,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 1898 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:26:36,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74764 states. [2022-12-13 17:26:39,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74764 to 74762. [2022-12-13 17:26:39,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74762 states, 74761 states have (on average 1.6441593879161596) internal successors, (122919), 74761 states have internal predecessors, (122919), 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) [2022-12-13 17:26:39,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74762 states to 74762 states and 122919 transitions. [2022-12-13 17:26:39,449 INFO L78 Accepts]: Start accepts. Automaton has 74762 states and 122919 transitions. Word has length 140 [2022-12-13 17:26:39,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:39,449 INFO L495 AbstractCegarLoop]: Abstraction has 74762 states and 122919 transitions. [2022-12-13 17:26:39,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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) [2022-12-13 17:26:39,449 INFO L276 IsEmpty]: Start isEmpty. Operand 74762 states and 122919 transitions. [2022-12-13 17:26:39,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-13 17:26:39,450 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:39,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:39,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 17:26:39,450 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:39,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:39,450 INFO L85 PathProgramCache]: Analyzing trace with hash -183199007, now seen corresponding path program 1 times [2022-12-13 17:26:39,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:39,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009227910] [2022-12-13 17:26:39,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:39,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:39,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:39,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:39,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009227910] [2022-12-13 17:26:39,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009227910] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:39,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:39,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:26:39,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930930765] [2022-12-13 17:26:39,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:39,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:26:39,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:39,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:26:39,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:26:39,619 INFO L87 Difference]: Start difference. First operand 74762 states and 122919 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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) [2022-12-13 17:26:45,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:45,607 INFO L93 Difference]: Finished difference Result 218656 states and 359935 transitions. [2022-12-13 17:26:45,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:26:45,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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 143 [2022-12-13 17:26:45,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:45,792 INFO L225 Difference]: With dead ends: 218656 [2022-12-13 17:26:45,792 INFO L226 Difference]: Without dead ends: 144122 [2022-12-13 17:26:45,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:26:45,838 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 583 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:45,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1905 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:26:45,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144122 states. [2022-12-13 17:26:50,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144122 to 144120. [2022-12-13 17:26:50,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144120 states, 144119 states have (on average 1.633122627828392) internal successors, (235364), 144119 states have internal predecessors, (235364), 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) [2022-12-13 17:26:51,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144120 states to 144120 states and 235364 transitions. [2022-12-13 17:26:51,058 INFO L78 Accepts]: Start accepts. Automaton has 144120 states and 235364 transitions. Word has length 143 [2022-12-13 17:26:51,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:51,058 INFO L495 AbstractCegarLoop]: Abstraction has 144120 states and 235364 transitions. [2022-12-13 17:26:51,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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) [2022-12-13 17:26:51,058 INFO L276 IsEmpty]: Start isEmpty. Operand 144120 states and 235364 transitions. [2022-12-13 17:26:51,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 17:26:51,059 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:51,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:51,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 17:26:51,059 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:51,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:51,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1815547221, now seen corresponding path program 1 times [2022-12-13 17:26:51,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:51,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533734395] [2022-12-13 17:26:51,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:51,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:51,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:51,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:51,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533734395] [2022-12-13 17:26:51,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533734395] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:51,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:51,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:26:51,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688374019] [2022-12-13 17:26:51,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:51,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:26:51,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:51,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:26:51,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:26:51,264 INFO L87 Difference]: Start difference. First operand 144120 states and 235364 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2022-12-13 17:27:01,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:27:01,543 INFO L93 Difference]: Finished difference Result 280129 states and 452822 transitions. [2022-12-13 17:27:01,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:27:01,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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 144 [2022-12-13 17:27:01,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:27:01,961 INFO L225 Difference]: With dead ends: 280129 [2022-12-13 17:27:01,961 INFO L226 Difference]: Without dead ends: 280127 [2022-12-13 17:27:02,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:27:02,008 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 505 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:27:02,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 2104 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:27:02,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280127 states. [2022-12-13 17:27:10,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280127 to 149928. [2022-12-13 17:27:10,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149928 states, 149927 states have (on average 1.6084160958333056) internal successors, (241145), 149927 states have internal predecessors, (241145), 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) [2022-12-13 17:27:10,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149928 states to 149928 states and 241145 transitions. [2022-12-13 17:27:10,715 INFO L78 Accepts]: Start accepts. Automaton has 149928 states and 241145 transitions. Word has length 144 [2022-12-13 17:27:10,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:27:10,715 INFO L495 AbstractCegarLoop]: Abstraction has 149928 states and 241145 transitions. [2022-12-13 17:27:10,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2022-12-13 17:27:10,716 INFO L276 IsEmpty]: Start isEmpty. Operand 149928 states and 241145 transitions. [2022-12-13 17:27:10,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-12-13 17:27:10,718 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:27:10,718 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:27:10,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 17:27:10,718 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:10,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:10,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1370618721, now seen corresponding path program 1 times [2022-12-13 17:27:10,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:10,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762589944] [2022-12-13 17:27:10,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:10,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 17:27:10,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:10,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762589944] [2022-12-13 17:27:10,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762589944] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:10,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:10,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:27:10,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658790094] [2022-12-13 17:27:10,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:10,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:27:10,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:10,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:27:10,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:27:10,852 INFO L87 Difference]: Start difference. First operand 149928 states and 241145 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 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) [2022-12-13 17:27:26,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:27:26,217 INFO L93 Difference]: Finished difference Result 411998 states and 664362 transitions. [2022-12-13 17:27:26,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:27:26,218 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 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 182 [2022-12-13 17:27:26,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:27:26,757 INFO L225 Difference]: With dead ends: 411998 [2022-12-13 17:27:26,757 INFO L226 Difference]: Without dead ends: 345496 [2022-12-13 17:27:26,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:27:26,827 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1182 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:27:26,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 2462 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:27:27,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345496 states. [2022-12-13 17:27:41,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345496 to 241644. [2022-12-13 17:27:41,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241644 states, 241643 states have (on average 1.6057862218231027) internal successors, (388027), 241643 states have internal predecessors, (388027), 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) [2022-12-13 17:27:42,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241644 states to 241644 states and 388027 transitions. [2022-12-13 17:27:42,025 INFO L78 Accepts]: Start accepts. Automaton has 241644 states and 388027 transitions. Word has length 182 [2022-12-13 17:27:42,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:27:42,025 INFO L495 AbstractCegarLoop]: Abstraction has 241644 states and 388027 transitions. [2022-12-13 17:27:42,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 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) [2022-12-13 17:27:42,025 INFO L276 IsEmpty]: Start isEmpty. Operand 241644 states and 388027 transitions. [2022-12-13 17:27:42,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-12-13 17:27:42,028 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:27:42,029 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:27:42,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 17:27:42,029 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:42,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:42,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1735152069, now seen corresponding path program 1 times [2022-12-13 17:27:42,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:42,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770377968] [2022-12-13 17:27:42,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:42,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 17:27:42,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:42,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770377968] [2022-12-13 17:27:42,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770377968] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:42,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:42,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:27:42,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12727600] [2022-12-13 17:27:42,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:42,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:27:42,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:42,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:27:42,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:27:42,291 INFO L87 Difference]: Start difference. First operand 241644 states and 388027 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 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) [2022-12-13 17:27:58,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:27:58,453 INFO L93 Difference]: Finished difference Result 438758 states and 707522 transitions. [2022-12-13 17:27:58,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:27:58,454 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 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 182 [2022-12-13 17:27:58,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:27:58,994 INFO L225 Difference]: With dead ends: 438758 [2022-12-13 17:27:58,994 INFO L226 Difference]: Without dead ends: 372256 [2022-12-13 17:27:59,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:27:59,062 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 1164 mSDsluCounter, 1800 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:27:59,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 2486 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:27:59,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372256 states. [2022-12-13 17:28:14,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372256 to 327640. [2022-12-13 17:28:15,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327640 states, 327639 states have (on average 1.606374698982722) internal successors, (526311), 327639 states have internal predecessors, (526311), 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) [2022-12-13 17:28:15,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327640 states to 327640 states and 526311 transitions. [2022-12-13 17:28:15,903 INFO L78 Accepts]: Start accepts. Automaton has 327640 states and 526311 transitions. Word has length 182 [2022-12-13 17:28:15,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:28:15,903 INFO L495 AbstractCegarLoop]: Abstraction has 327640 states and 526311 transitions. [2022-12-13 17:28:15,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 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) [2022-12-13 17:28:15,903 INFO L276 IsEmpty]: Start isEmpty. Operand 327640 states and 526311 transitions. [2022-12-13 17:28:15,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-12-13 17:28:15,906 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:28:15,906 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:28:15,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 17:28:15,907 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:28:15,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:15,907 INFO L85 PathProgramCache]: Analyzing trace with hash 866355781, now seen corresponding path program 1 times [2022-12-13 17:28:15,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:15,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549467643] [2022-12-13 17:28:15,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:15,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:16,066 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 17:28:16,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:16,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549467643] [2022-12-13 17:28:16,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549467643] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:28:16,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:28:16,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:28:16,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477461215] [2022-12-13 17:28:16,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:16,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:28:16,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:16,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:28:16,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:28:16,068 INFO L87 Difference]: Start difference. First operand 327640 states and 526311 transitions. Second operand has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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) [2022-12-13 17:28:34,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:28:34,447 INFO L93 Difference]: Finished difference Result 481510 states and 776638 transitions. [2022-12-13 17:28:34,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:28:34,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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 182 [2022-12-13 17:28:34,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:28:35,101 INFO L225 Difference]: With dead ends: 481510 [2022-12-13 17:28:35,101 INFO L226 Difference]: Without dead ends: 415008 [2022-12-13 17:28:35,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:28:35,184 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 1090 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:28:35,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 2677 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:28:35,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415008 states. [2022-12-13 17:28:53,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415008 to 380136. [2022-12-13 17:28:54,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380136 states, 380135 states have (on average 1.6078366895971168) internal successors, (611195), 380135 states have internal predecessors, (611195), 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) [2022-12-13 17:28:54,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380136 states to 380136 states and 611195 transitions. [2022-12-13 17:28:54,938 INFO L78 Accepts]: Start accepts. Automaton has 380136 states and 611195 transitions. Word has length 182 [2022-12-13 17:28:54,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:28:54,938 INFO L495 AbstractCegarLoop]: Abstraction has 380136 states and 611195 transitions. [2022-12-13 17:28:54,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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) [2022-12-13 17:28:54,938 INFO L276 IsEmpty]: Start isEmpty. Operand 380136 states and 611195 transitions. [2022-12-13 17:28:54,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-12-13 17:28:54,940 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:28:54,940 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:28:54,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 17:28:54,941 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:28:54,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:54,941 INFO L85 PathProgramCache]: Analyzing trace with hash 782367715, now seen corresponding path program 1 times [2022-12-13 17:28:54,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:54,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96349585] [2022-12-13 17:28:54,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:54,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:54,991 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:28:54,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:54,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96349585] [2022-12-13 17:28:54,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96349585] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:28:54,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:28:54,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:28:54,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326909959] [2022-12-13 17:28:54,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:54,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:28:54,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:54,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:28:54,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:28:54,992 INFO L87 Difference]: Start difference. First operand 380136 states and 611195 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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) [2022-12-13 17:29:27,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:29:27,453 INFO L93 Difference]: Finished difference Result 766699 states and 1235934 transitions. [2022-12-13 17:29:27,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:29:27,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 182 [2022-12-13 17:29:27,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:29:28,540 INFO L225 Difference]: With dead ends: 766699 [2022-12-13 17:29:28,540 INFO L226 Difference]: Without dead ends: 698897 [2022-12-13 17:29:28,666 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 [2022-12-13 17:29:28,666 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 133 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:29:28,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 969 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:29:29,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698897 states. [2022-12-13 17:30:05,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698897 to 698220. [2022-12-13 17:30:05,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698220 states, 698219 states have (on average 1.6096769065293268) internal successors, (1123907), 698219 states have internal predecessors, (1123907), 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) [2022-12-13 17:30:07,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698220 states to 698220 states and 1123907 transitions. [2022-12-13 17:30:07,176 INFO L78 Accepts]: Start accepts. Automaton has 698220 states and 1123907 transitions. Word has length 182 [2022-12-13 17:30:07,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:30:07,176 INFO L495 AbstractCegarLoop]: Abstraction has 698220 states and 1123907 transitions. [2022-12-13 17:30:07,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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) [2022-12-13 17:30:07,176 INFO L276 IsEmpty]: Start isEmpty. Operand 698220 states and 1123907 transitions. [2022-12-13 17:30:07,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-12-13 17:30:07,179 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:30:07,179 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:30:07,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 17:30:07,179 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:30:07,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:30:07,180 INFO L85 PathProgramCache]: Analyzing trace with hash 100608814, now seen corresponding path program 1 times [2022-12-13 17:30:07,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:30:07,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135947176] [2022-12-13 17:30:07,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:30:07,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:30:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:30:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:30:07,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:30:07,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135947176] [2022-12-13 17:30:07,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135947176] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:30:07,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:30:07,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:30:07,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026592101] [2022-12-13 17:30:07,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:30:07,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:30:07,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:30:07,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:30:07,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:30:07,232 INFO L87 Difference]: Start difference. First operand 698220 states and 1123907 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2022-12-13 17:31:17,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:31:17,370 INFO L93 Difference]: Finished difference Result 2083859 states and 3350138 transitions. [2022-12-13 17:31:17,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:31:17,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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 183 [2022-12-13 17:31:17,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:31:19,844 INFO L225 Difference]: With dead ends: 2083859 [2022-12-13 17:31:19,844 INFO L226 Difference]: Without dead ends: 1385700 [2022-12-13 17:31:20,476 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 [2022-12-13 17:31:20,476 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 381 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:31:20,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 1250 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:31:21,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385700 states. [2022-12-13 17:32:34,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385700 to 1385698. [2022-12-13 17:32:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1385698 states, 1385697 states have (on average 1.5989346877419812) internal successors, (2215639), 1385697 states have internal predecessors, (2215639), 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) [2022-12-13 17:32:38,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385698 states to 1385698 states and 2215639 transitions. [2022-12-13 17:32:38,518 INFO L78 Accepts]: Start accepts. Automaton has 1385698 states and 2215639 transitions. Word has length 183 [2022-12-13 17:32:38,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:32:38,518 INFO L495 AbstractCegarLoop]: Abstraction has 1385698 states and 2215639 transitions. [2022-12-13 17:32:38,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2022-12-13 17:32:38,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1385698 states and 2215639 transitions. [2022-12-13 17:32:38,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-12-13 17:32:38,523 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:32:38,524 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:32:38,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 17:32:38,524 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:32:38,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:32:38,524 INFO L85 PathProgramCache]: Analyzing trace with hash -307469752, now seen corresponding path program 1 times [2022-12-13 17:32:38,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:32:38,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485723907] [2022-12-13 17:32:38,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:32:38,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:32:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:32:38,575 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:32:38,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:32:38,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485723907] [2022-12-13 17:32:38,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485723907] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:32:38,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:32:38,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:32:38,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460850990] [2022-12-13 17:32:38,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:32:38,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:32:38,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:32:38,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:32:38,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:32:38,577 INFO L87 Difference]: Start difference. First operand 1385698 states and 2215639 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2022-12-13 17:35:08,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:35:08,448 INFO L93 Difference]: Finished difference Result 4135592 states and 6603933 transitions. [2022-12-13 17:35:08,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:35:08,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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 183 [2022-12-13 17:35:08,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:35:13,678 INFO L225 Difference]: With dead ends: 4135592 [2022-12-13 17:35:13,678 INFO L226 Difference]: Without dead ends: 2749975 [2022-12-13 17:35:14,873 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 [2022-12-13 17:35:14,874 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 420 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:35:14,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 1299 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:35:16,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749975 states.