./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label45.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label45.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8 --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 bad588c9542390857efe8d001f4c41a270c4260c6e96db502f4ea1506acc7b02 --- 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-e04fb08 [2022-11-16 11:06:04,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:06:04,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:06:04,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:06:04,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:06:04,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:06:04,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:06:04,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:06:04,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:06:04,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:06:04,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:06:04,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:06:04,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:06:04,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:06:04,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:06:04,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:06:04,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:06:04,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:06:04,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:06:04,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:06:04,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:06:04,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:06:04,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:06:04,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:06:04,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:06:04,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:06:04,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:06:04,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:06:04,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:06:04,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:06:04,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:06:04,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:06:04,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:06:04,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:06:04,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:06:04,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:06:04,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:06:04,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:06:04,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:06:04,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:06:04,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:06:04,600 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:06:04,638 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:06:04,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:06:04,639 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:06:04,639 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:06:04,640 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:06:04,640 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:06:04,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:06:04,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:06:04,642 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:06:04,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:06:04,642 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:06:04,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:06:04,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:06:04,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:06:04,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:06:04,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:06:04,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:06:04,647 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:06:04,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:06:04,647 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:06:04,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:06:04,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:06:04,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:06:04,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:06:04,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:06:04,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:06:04,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:06:04,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:06:04,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:06:04,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:06:04,651 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:06:04,651 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:06:04,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:06:04,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bad588c9542390857efe8d001f4c41a270c4260c6e96db502f4ea1506acc7b02 [2022-11-16 11:06:04,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:06:04,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:06:04,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:06:04,953 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:06:04,954 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:06:04,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/eca-rers2012/Problem17_label45.c [2022-11-16 11:06:05,061 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/data/2a89be8c7/2c451df2cb274090b62da3c8cf21b8aa/FLAG4004da91b [2022-11-16 11:06:05,836 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:06:05,836 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/sv-benchmarks/c/eca-rers2012/Problem17_label45.c [2022-11-16 11:06:05,858 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/data/2a89be8c7/2c451df2cb274090b62da3c8cf21b8aa/FLAG4004da91b [2022-11-16 11:06:05,949 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/data/2a89be8c7/2c451df2cb274090b62da3c8cf21b8aa [2022-11-16 11:06:05,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:06:05,956 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:06:05,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:06:05,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:06:05,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:06:05,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:06:05" (1/1) ... [2022-11-16 11:06:05,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3160aea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:05, skipping insertion in model container [2022-11-16 11:06:05,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:06:05" (1/1) ... [2022-11-16 11:06:05,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:06:06,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:06:06,346 WARN L229 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_f76b382a-ee3d-4555-a4dc-eee41420b718/sv-benchmarks/c/eca-rers2012/Problem17_label45.c[7434,7447] [2022-11-16 11:06:07,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:06:07,048 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:06:07,098 WARN L229 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_f76b382a-ee3d-4555-a4dc-eee41420b718/sv-benchmarks/c/eca-rers2012/Problem17_label45.c[7434,7447] [2022-11-16 11:06:07,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:06:07,515 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:06:07,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:07 WrapperNode [2022-11-16 11:06:07,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:06:07,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:06:07,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:06:07,518 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:06:07,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:07" (1/1) ... [2022-11-16 11:06:07,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:07" (1/1) ... [2022-11-16 11:06:07,867 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-11-16 11:06:07,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:06:07,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:06:07,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:06:07,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:06:07,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:07" (1/1) ... [2022-11-16 11:06:07,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:07" (1/1) ... [2022-11-16 11:06:08,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:07" (1/1) ... [2022-11-16 11:06:08,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:07" (1/1) ... [2022-11-16 11:06:08,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:07" (1/1) ... [2022-11-16 11:06:08,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:07" (1/1) ... [2022-11-16 11:06:08,322 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:07" (1/1) ... [2022-11-16 11:06:08,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:07" (1/1) ... [2022-11-16 11:06:08,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:06:08,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:06:08,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:06:08,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:06:08,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:07" (1/1) ... [2022-11-16 11:06:08,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:06:08,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:06:08,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:06:08,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:06:08,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:06:08,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:06:08,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:06:08,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:06:08,689 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:06:08,691 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:06:12,979 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:06:13,001 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:06:13,001 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:06:13,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:06:13 BoogieIcfgContainer [2022-11-16 11:06:13,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:06:13,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:06:13,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:06:13,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:06:13,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:06:05" (1/3) ... [2022-11-16 11:06:13,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe0c79d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:06:13, skipping insertion in model container [2022-11-16 11:06:13,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:07" (2/3) ... [2022-11-16 11:06:13,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe0c79d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:06:13, skipping insertion in model container [2022-11-16 11:06:13,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:06:13" (3/3) ... [2022-11-16 11:06:13,021 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label45.c [2022-11-16 11:06:13,043 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:06:13,043 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:06:13,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:06:13,163 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;@ffdb398, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:06:13,163 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:06:13,171 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:13,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-16 11:06:13,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:13,181 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] [2022-11-16 11:06:13,182 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:13,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:13,190 INFO L85 PathProgramCache]: Analyzing trace with hash 761214138, now seen corresponding path program 1 times [2022-11-16 11:06:13,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:13,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017769334] [2022-11-16 11:06:13,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:13,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:13,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:13,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017769334] [2022-11-16 11:06:13,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017769334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:13,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:13,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:06:13,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876786150] [2022-11-16 11:06:13,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:13,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:13,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:13,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:13,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:13,640 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:17,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:17,364 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2022-11-16 11:06:17,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:17,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2022-11-16 11:06:17,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:17,392 INFO L225 Difference]: With dead ends: 1642 [2022-11-16 11:06:17,392 INFO L226 Difference]: Without dead ends: 975 [2022-11-16 11:06:17,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:17,401 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 440 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:17,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-16 11:06:17,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-11-16 11:06:17,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2022-11-16 11:06:17,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:17,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2022-11-16 11:06:17,500 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 50 [2022-11-16 11:06:17,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:17,501 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2022-11-16 11:06:17,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:17,501 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2022-11-16 11:06:17,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-16 11:06:17,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:17,507 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, 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] [2022-11-16 11:06:17,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:06:17,508 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:17,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:17,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1698886982, now seen corresponding path program 1 times [2022-11-16 11:06:17,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:17,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866751842] [2022-11-16 11:06:17,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:17,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:17,951 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:17,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:17,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866751842] [2022-11-16 11:06:17,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866751842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:17,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:17,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:06:17,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734469881] [2022-11-16 11:06:17,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:17,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:17,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:17,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:17,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:17,956 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:21,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:21,114 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2022-11-16 11:06:21,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:21,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2022-11-16 11:06:21,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:21,122 INFO L225 Difference]: With dead ends: 2814 [2022-11-16 11:06:21,122 INFO L226 Difference]: Without dead ends: 1844 [2022-11-16 11:06:21,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:21,125 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 441 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:21,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-16 11:06:21,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-11-16 11:06:21,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2022-11-16 11:06:21,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:21,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2022-11-16 11:06:21,184 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 120 [2022-11-16 11:06:21,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:21,184 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2022-11-16 11:06:21,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:21,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2022-11-16 11:06:21,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-16 11:06:21,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:21,190 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, 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] [2022-11-16 11:06:21,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:06:21,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:21,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:21,191 INFO L85 PathProgramCache]: Analyzing trace with hash -859485079, now seen corresponding path program 1 times [2022-11-16 11:06:21,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:21,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762478441] [2022-11-16 11:06:21,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:21,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:21,460 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:21,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:21,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762478441] [2022-11-16 11:06:21,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762478441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:21,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:21,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:06:21,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144166352] [2022-11-16 11:06:21,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:21,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:21,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:21,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:21,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:21,467 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:24,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:24,297 INFO L93 Difference]: Finished difference Result 5395 states and 7326 transitions. [2022-11-16 11:06:24,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:24,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-11-16 11:06:24,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:24,307 INFO L225 Difference]: With dead ends: 5395 [2022-11-16 11:06:24,307 INFO L226 Difference]: Without dead ends: 2701 [2022-11-16 11:06:24,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:24,311 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:24,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-16 11:06:24,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2022-11-16 11:06:24,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2022-11-16 11:06:24,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.191851851851852) internal successors, (3218), 2700 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:24,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3218 transitions. [2022-11-16 11:06:24,369 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3218 transitions. Word has length 142 [2022-11-16 11:06:24,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:24,369 INFO L495 AbstractCegarLoop]: Abstraction has 2701 states and 3218 transitions. [2022-11-16 11:06:24,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:24,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3218 transitions. [2022-11-16 11:06:24,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-16 11:06:24,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:24,374 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:06:24,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:06:24,374 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:24,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:24,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1759632867, now seen corresponding path program 1 times [2022-11-16 11:06:24,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:24,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768558200] [2022-11-16 11:06:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:24,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:24,690 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:24,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:24,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768558200] [2022-11-16 11:06:24,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768558200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:24,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:24,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:06:24,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674084756] [2022-11-16 11:06:24,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:24,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:24,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:24,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:24,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:24,695 INFO L87 Difference]: Start difference. First operand 2701 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:27,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:27,052 INFO L93 Difference]: Finished difference Result 7108 states and 8598 transitions. [2022-11-16 11:06:27,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:27,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2022-11-16 11:06:27,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:27,068 INFO L225 Difference]: With dead ends: 7108 [2022-11-16 11:06:27,068 INFO L226 Difference]: Without dead ends: 4409 [2022-11-16 11:06:27,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:27,073 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:27,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-16 11:06:27,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2022-11-16 11:06:27,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2022-11-16 11:06:27,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 1.1705989110707804) internal successors, (5160), 4408 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:27,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5160 transitions. [2022-11-16 11:06:27,181 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5160 transitions. Word has length 202 [2022-11-16 11:06:27,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:27,181 INFO L495 AbstractCegarLoop]: Abstraction has 4409 states and 5160 transitions. [2022-11-16 11:06:27,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:27,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5160 transitions. [2022-11-16 11:06:27,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-16 11:06:27,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:27,185 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:06:27,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:06:27,186 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:27,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:27,187 INFO L85 PathProgramCache]: Analyzing trace with hash -686975016, now seen corresponding path program 1 times [2022-11-16 11:06:27,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:27,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927574810] [2022-11-16 11:06:27,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:27,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,437 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-16 11:06:27,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:27,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927574810] [2022-11-16 11:06:27,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927574810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:27,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:27,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:06:27,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449459694] [2022-11-16 11:06:27,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:27,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:27,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:27,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:27,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:27,442 INFO L87 Difference]: Start difference. First operand 4409 states and 5160 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 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) [2022-11-16 11:06:30,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:30,052 INFO L93 Difference]: Finished difference Result 10936 states and 12970 transitions. [2022-11-16 11:06:30,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:30,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 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 204 [2022-11-16 11:06:30,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:30,071 INFO L225 Difference]: With dead ends: 10936 [2022-11-16 11:06:30,072 INFO L226 Difference]: Without dead ends: 6528 [2022-11-16 11:06:30,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:30,129 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 401 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:30,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-16 11:06:30,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2022-11-16 11:06:30,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4382. [2022-11-16 11:06:30,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 1.1684546907098836) internal successors, (5119), 4381 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:30,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5119 transitions. [2022-11-16 11:06:30,220 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5119 transitions. Word has length 204 [2022-11-16 11:06:30,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:30,221 INFO L495 AbstractCegarLoop]: Abstraction has 4382 states and 5119 transitions. [2022-11-16 11:06:30,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 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) [2022-11-16 11:06:30,225 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5119 transitions. [2022-11-16 11:06:30,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-11-16 11:06:30,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:30,230 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-11-16 11:06:30,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:06:30,231 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:30,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:30,233 INFO L85 PathProgramCache]: Analyzing trace with hash -959867106, now seen corresponding path program 1 times [2022-11-16 11:06:30,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:30,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072694946] [2022-11-16 11:06:30,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:30,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:30,590 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 11:06:30,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:30,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072694946] [2022-11-16 11:06:30,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072694946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:30,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:30,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:06:30,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682112077] [2022-11-16 11:06:30,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:30,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:30,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:30,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:30,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:30,593 INFO L87 Difference]: Start difference. First operand 4382 states and 5119 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:33,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:33,567 INFO L93 Difference]: Finished difference Result 10045 states and 11706 transitions. [2022-11-16 11:06:33,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:33,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 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 270 [2022-11-16 11:06:33,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:33,588 INFO L225 Difference]: With dead ends: 10045 [2022-11-16 11:06:33,589 INFO L226 Difference]: Without dead ends: 5665 [2022-11-16 11:06:33,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:33,594 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 386 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:33,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 894 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-16 11:06:33,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5665 states. [2022-11-16 11:06:33,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5665 to 5234. [2022-11-16 11:06:33,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5233 states have (on average 1.1587999235620103) internal successors, (6064), 5233 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:33,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 6064 transitions. [2022-11-16 11:06:33,738 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 6064 transitions. Word has length 270 [2022-11-16 11:06:33,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:33,739 INFO L495 AbstractCegarLoop]: Abstraction has 5234 states and 6064 transitions. [2022-11-16 11:06:33,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:33,739 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 6064 transitions. [2022-11-16 11:06:33,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-11-16 11:06:33,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:33,746 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:33,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:06:33,746 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:33,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:33,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1561562149, now seen corresponding path program 1 times [2022-11-16 11:06:33,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:33,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003737011] [2022-11-16 11:06:33,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:33,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-11-16 11:06:34,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:34,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003737011] [2022-11-16 11:06:34,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003737011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:34,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:34,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:06:34,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879754137] [2022-11-16 11:06:34,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:34,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:34,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:34,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:34,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:34,069 INFO L87 Difference]: Start difference. First operand 5234 states and 6064 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:36,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:36,635 INFO L93 Difference]: Finished difference Result 12593 states and 14783 transitions. [2022-11-16 11:06:36,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:36,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 282 [2022-11-16 11:06:36,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:36,658 INFO L225 Difference]: With dead ends: 12593 [2022-11-16 11:06:36,658 INFO L226 Difference]: Without dead ends: 6936 [2022-11-16 11:06:36,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:36,664 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 383 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:36,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 847 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-16 11:06:36,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6936 states. [2022-11-16 11:06:36,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6936 to 6936. [2022-11-16 11:06:36,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6936 states, 6935 states have (on average 1.1322278298485942) internal successors, (7852), 6935 states have internal predecessors, (7852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:36,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6936 states to 6936 states and 7852 transitions. [2022-11-16 11:06:36,773 INFO L78 Accepts]: Start accepts. Automaton has 6936 states and 7852 transitions. Word has length 282 [2022-11-16 11:06:36,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:36,774 INFO L495 AbstractCegarLoop]: Abstraction has 6936 states and 7852 transitions. [2022-11-16 11:06:36,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:36,774 INFO L276 IsEmpty]: Start isEmpty. Operand 6936 states and 7852 transitions. [2022-11-16 11:06:36,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-11-16 11:06:36,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:36,781 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:06:36,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:06:36,781 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:36,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:36,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1048618558, now seen corresponding path program 1 times [2022-11-16 11:06:36,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:36,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387763670] [2022-11-16 11:06:36,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:36,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:37,121 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-11-16 11:06:37,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:37,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387763670] [2022-11-16 11:06:37,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387763670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:37,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:37,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:06:37,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591988579] [2022-11-16 11:06:37,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:37,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:37,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:37,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:37,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:37,124 INFO L87 Difference]: Start difference. First operand 6936 states and 7852 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:39,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:39,622 INFO L93 Difference]: Finished difference Result 17279 states and 19683 transitions. [2022-11-16 11:06:39,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:39,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 322 [2022-11-16 11:06:39,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:39,642 INFO L225 Difference]: With dead ends: 17279 [2022-11-16 11:06:39,642 INFO L226 Difference]: Without dead ends: 9468 [2022-11-16 11:06:39,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:39,650 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 495 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:39,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 640 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-16 11:06:39,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9468 states. [2022-11-16 11:06:39,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9468 to 9038. [2022-11-16 11:06:39,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9038 states, 9037 states have (on average 1.1249308398804914) internal successors, (10166), 9037 states have internal predecessors, (10166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:39,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9038 states to 9038 states and 10166 transitions. [2022-11-16 11:06:39,781 INFO L78 Accepts]: Start accepts. Automaton has 9038 states and 10166 transitions. Word has length 322 [2022-11-16 11:06:39,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:39,782 INFO L495 AbstractCegarLoop]: Abstraction has 9038 states and 10166 transitions. [2022-11-16 11:06:39,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:39,783 INFO L276 IsEmpty]: Start isEmpty. Operand 9038 states and 10166 transitions. [2022-11-16 11:06:39,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-11-16 11:06:39,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:39,792 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:39,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:06:39,793 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:39,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:39,793 INFO L85 PathProgramCache]: Analyzing trace with hash -474723312, now seen corresponding path program 1 times [2022-11-16 11:06:39,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:39,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119921966] [2022-11-16 11:06:39,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:39,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:40,402 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:40,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:40,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119921966] [2022-11-16 11:06:40,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119921966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:40,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:40,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:06:40,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268728783] [2022-11-16 11:06:40,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:40,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:06:40,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:40,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:06:40,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:06:40,406 INFO L87 Difference]: Start difference. First operand 9038 states and 10166 transitions. Second operand has 4 states, 4 states have (on average 97.25) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:44,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:44,239 INFO L93 Difference]: Finished difference Result 26188 states and 29347 transitions. [2022-11-16 11:06:44,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:44,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 97.25) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 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 389 [2022-11-16 11:06:44,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:44,269 INFO L225 Difference]: With dead ends: 26188 [2022-11-16 11:06:44,270 INFO L226 Difference]: Without dead ends: 16727 [2022-11-16 11:06:44,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:06:44,280 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 520 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 2684 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 2684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:44,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 371 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 2684 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-16 11:06:44,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16727 states. [2022-11-16 11:06:44,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16727 to 16283. [2022-11-16 11:06:44,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16283 states, 16282 states have (on average 1.110920034393809) internal successors, (18088), 16282 states have internal predecessors, (18088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:44,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16283 states to 16283 states and 18088 transitions. [2022-11-16 11:06:44,577 INFO L78 Accepts]: Start accepts. Automaton has 16283 states and 18088 transitions. Word has length 389 [2022-11-16 11:06:44,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:44,578 INFO L495 AbstractCegarLoop]: Abstraction has 16283 states and 18088 transitions. [2022-11-16 11:06:44,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.25) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:44,578 INFO L276 IsEmpty]: Start isEmpty. Operand 16283 states and 18088 transitions. [2022-11-16 11:06:44,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-11-16 11:06:44,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:44,590 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:06:44,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:06:44,590 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:44,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:44,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2212298, now seen corresponding path program 1 times [2022-11-16 11:06:44,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:44,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114019865] [2022-11-16 11:06:44,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:44,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 11:06:45,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:45,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114019865] [2022-11-16 11:06:45,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114019865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:45,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:45,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:06:45,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837492519] [2022-11-16 11:06:45,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:45,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:45,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:45,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:45,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:45,111 INFO L87 Difference]: Start difference. First operand 16283 states and 18088 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:47,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:47,788 INFO L93 Difference]: Finished difference Result 38973 states and 43494 transitions. [2022-11-16 11:06:47,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:47,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 393 [2022-11-16 11:06:47,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:47,825 INFO L225 Difference]: With dead ends: 38973 [2022-11-16 11:06:47,825 INFO L226 Difference]: Without dead ends: 22692 [2022-11-16 11:06:47,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:47,836 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 349 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:47,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 654 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-16 11:06:47,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22692 states. [2022-11-16 11:06:48,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22692 to 21823. [2022-11-16 11:06:48,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21823 states, 21822 states have (on average 1.119420768032261) internal successors, (24428), 21822 states have internal predecessors, (24428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:48,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21823 states to 21823 states and 24428 transitions. [2022-11-16 11:06:48,116 INFO L78 Accepts]: Start accepts. Automaton has 21823 states and 24428 transitions. Word has length 393 [2022-11-16 11:06:48,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:48,117 INFO L495 AbstractCegarLoop]: Abstraction has 21823 states and 24428 transitions. [2022-11-16 11:06:48,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:48,118 INFO L276 IsEmpty]: Start isEmpty. Operand 21823 states and 24428 transitions. [2022-11-16 11:06:48,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2022-11-16 11:06:48,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:48,132 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2022-11-16 11:06:48,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:06:48,133 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:48,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:48,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1334255484, now seen corresponding path program 1 times [2022-11-16 11:06:48,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:48,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585602464] [2022-11-16 11:06:48,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:48,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:48,999 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 373 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 11:06:48,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:48,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585602464] [2022-11-16 11:06:48,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585602464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:48,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:49,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:06:49,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513155587] [2022-11-16 11:06:49,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:49,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:49,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:49,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:49,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:49,002 INFO L87 Difference]: Start difference. First operand 21823 states and 24428 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:51,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:51,275 INFO L93 Difference]: Finished difference Result 49189 states and 55550 transitions. [2022-11-16 11:06:51,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:51,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 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 436 [2022-11-16 11:06:51,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:51,310 INFO L225 Difference]: With dead ends: 49189 [2022-11-16 11:06:51,311 INFO L226 Difference]: Without dead ends: 26943 [2022-11-16 11:06:51,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:51,328 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 313 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:51,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 761 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-16 11:06:51,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26943 states. [2022-11-16 11:06:51,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26943 to 26936. [2022-11-16 11:06:51,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26936 states, 26935 states have (on average 1.1173937256357898) internal successors, (30097), 26935 states have internal predecessors, (30097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:51,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26936 states to 26936 states and 30097 transitions. [2022-11-16 11:06:51,787 INFO L78 Accepts]: Start accepts. Automaton has 26936 states and 30097 transitions. Word has length 436 [2022-11-16 11:06:51,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:51,788 INFO L495 AbstractCegarLoop]: Abstraction has 26936 states and 30097 transitions. [2022-11-16 11:06:51,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:51,788 INFO L276 IsEmpty]: Start isEmpty. Operand 26936 states and 30097 transitions. [2022-11-16 11:06:51,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2022-11-16 11:06:51,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:51,807 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2022-11-16 11:06:51,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:06:51,808 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:51,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:51,808 INFO L85 PathProgramCache]: Analyzing trace with hash -344888426, now seen corresponding path program 1 times [2022-11-16 11:06:51,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:51,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770910982] [2022-11-16 11:06:51,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:51,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:52,156 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 380 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 11:06:52,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:52,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770910982] [2022-11-16 11:06:52,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770910982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:52,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:52,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:06:52,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985130594] [2022-11-16 11:06:52,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:52,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:52,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:52,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:52,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:52,159 INFO L87 Difference]: Start difference. First operand 26936 states and 30097 transitions. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:54,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:54,653 INFO L93 Difference]: Finished difference Result 64094 states and 71471 transitions. [2022-11-16 11:06:54,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:54,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 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 449 [2022-11-16 11:06:54,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:54,698 INFO L225 Difference]: With dead ends: 64094 [2022-11-16 11:06:54,699 INFO L226 Difference]: Without dead ends: 37160 [2022-11-16 11:06:54,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:54,717 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 352 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:54,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 153 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-16 11:06:54,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37160 states. [2022-11-16 11:06:55,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37160 to 29046. [2022-11-16 11:06:55,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29046 states, 29045 states have (on average 1.115751420210019) internal successors, (32407), 29045 states have internal predecessors, (32407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:55,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29046 states to 29046 states and 32407 transitions. [2022-11-16 11:06:55,207 INFO L78 Accepts]: Start accepts. Automaton has 29046 states and 32407 transitions. Word has length 449 [2022-11-16 11:06:55,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:55,208 INFO L495 AbstractCegarLoop]: Abstraction has 29046 states and 32407 transitions. [2022-11-16 11:06:55,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:55,208 INFO L276 IsEmpty]: Start isEmpty. Operand 29046 states and 32407 transitions. [2022-11-16 11:06:55,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2022-11-16 11:06:55,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:55,225 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:06:55,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:06:55,225 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:55,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:55,226 INFO L85 PathProgramCache]: Analyzing trace with hash 2118200343, now seen corresponding path program 1 times [2022-11-16 11:06:55,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:55,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805539575] [2022-11-16 11:06:55,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:55,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:55,982 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 498 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-16 11:06:55,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:55,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805539575] [2022-11-16 11:06:55,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805539575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:55,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:55,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:06:55,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578008439] [2022-11-16 11:06:55,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:55,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:55,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:55,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:55,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:55,985 INFO L87 Difference]: Start difference. First operand 29046 states and 32407 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:58,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:58,328 INFO L93 Difference]: Finished difference Result 67034 states and 74966 transitions. [2022-11-16 11:06:58,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:58,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 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 513 [2022-11-16 11:06:58,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:58,360 INFO L225 Difference]: With dead ends: 67034 [2022-11-16 11:06:58,360 INFO L226 Difference]: Without dead ends: 37990 [2022-11-16 11:06:58,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:58,380 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 326 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:58,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 344 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-16 11:06:58,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37990 states. [2022-11-16 11:06:58,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37990 to 33301. [2022-11-16 11:06:58,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33301 states, 33300 states have (on average 1.10012012012012) internal successors, (36634), 33300 states have internal predecessors, (36634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33301 states to 33301 states and 36634 transitions. [2022-11-16 11:06:59,001 INFO L78 Accepts]: Start accepts. Automaton has 33301 states and 36634 transitions. Word has length 513 [2022-11-16 11:06:59,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:59,002 INFO L495 AbstractCegarLoop]: Abstraction has 33301 states and 36634 transitions. [2022-11-16 11:06:59,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:59,003 INFO L276 IsEmpty]: Start isEmpty. Operand 33301 states and 36634 transitions. [2022-11-16 11:06:59,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2022-11-16 11:06:59,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:59,024 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2022-11-16 11:06:59,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:06:59,025 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:59,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:59,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1612744574, now seen corresponding path program 1 times [2022-11-16 11:06:59,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:59,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306631476] [2022-11-16 11:06:59,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:59,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-16 11:06:59,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:59,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306631476] [2022-11-16 11:06:59,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306631476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:59,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:59,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:06:59,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479357974] [2022-11-16 11:06:59,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:59,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:59,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:59,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:59,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:59,772 INFO L87 Difference]: Start difference. First operand 33301 states and 36634 transitions. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:02,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:02,416 INFO L93 Difference]: Finished difference Result 75546 states and 83066 transitions. [2022-11-16 11:07:02,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:02,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 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 567 [2022-11-16 11:07:02,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:02,466 INFO L225 Difference]: With dead ends: 75546 [2022-11-16 11:07:02,466 INFO L226 Difference]: Without dead ends: 42247 [2022-11-16 11:07:02,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:02,486 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 246 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:02,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 783 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-16 11:07:02,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42247 states. [2022-11-16 11:07:03,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42247 to 40536. [2022-11-16 11:07:03,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40536 states, 40535 states have (on average 1.0932527445417541) internal successors, (44315), 40535 states have internal predecessors, (44315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:03,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40536 states to 40536 states and 44315 transitions. [2022-11-16 11:07:03,265 INFO L78 Accepts]: Start accepts. Automaton has 40536 states and 44315 transitions. Word has length 567 [2022-11-16 11:07:03,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:03,266 INFO L495 AbstractCegarLoop]: Abstraction has 40536 states and 44315 transitions. [2022-11-16 11:07:03,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:03,266 INFO L276 IsEmpty]: Start isEmpty. Operand 40536 states and 44315 transitions. [2022-11-16 11:07:03,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2022-11-16 11:07:03,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:03,300 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-11-16 11:07:03,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:07:03,301 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:03,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:03,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1259748942, now seen corresponding path program 1 times [2022-11-16 11:07:03,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:03,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772114152] [2022-11-16 11:07:03,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:03,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:04,266 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 11:07:04,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:04,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772114152] [2022-11-16 11:07:04,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772114152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:04,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:04,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:07:04,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523635862] [2022-11-16 11:07:04,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:04,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:04,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:04,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:04,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:04,270 INFO L87 Difference]: Start difference. First operand 40536 states and 44315 transitions. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:06,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:06,716 INFO L93 Difference]: Finished difference Result 92571 states and 101579 transitions. [2022-11-16 11:07:06,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:06,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 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 598 [2022-11-16 11:07:06,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:06,772 INFO L225 Difference]: With dead ends: 92571 [2022-11-16 11:07:06,772 INFO L226 Difference]: Without dead ends: 51186 [2022-11-16 11:07:06,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:06,798 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 312 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:06,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 617 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-16 11:07:06,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51186 states. [2022-11-16 11:07:07,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51186 to 51175. [2022-11-16 11:07:07,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51175 states, 51174 states have (on average 1.0936999257435416) internal successors, (55969), 51174 states have internal predecessors, (55969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:07,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51175 states to 51175 states and 55969 transitions. [2022-11-16 11:07:07,526 INFO L78 Accepts]: Start accepts. Automaton has 51175 states and 55969 transitions. Word has length 598 [2022-11-16 11:07:07,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:07,526 INFO L495 AbstractCegarLoop]: Abstraction has 51175 states and 55969 transitions. [2022-11-16 11:07:07,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:07,527 INFO L276 IsEmpty]: Start isEmpty. Operand 51175 states and 55969 transitions. [2022-11-16 11:07:07,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2022-11-16 11:07:07,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:07,550 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 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, 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, 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, 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, 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] [2022-11-16 11:07:07,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:07:07,550 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:07,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:07,551 INFO L85 PathProgramCache]: Analyzing trace with hash 378655293, now seen corresponding path program 1 times [2022-11-16 11:07:07,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:07,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051685737] [2022-11-16 11:07:07,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:07,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:08,161 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 518 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-11-16 11:07:08,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:08,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051685737] [2022-11-16 11:07:08,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051685737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:08,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:08,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:07:08,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332781778] [2022-11-16 11:07:08,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:08,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:08,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:08,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:08,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:08,167 INFO L87 Difference]: Start difference. First operand 51175 states and 55969 transitions. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:10,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:10,741 INFO L93 Difference]: Finished difference Result 106181 states and 116205 transitions. [2022-11-16 11:07:10,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:10,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 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 665 [2022-11-16 11:07:10,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:10,808 INFO L225 Difference]: With dead ends: 106181 [2022-11-16 11:07:10,808 INFO L226 Difference]: Without dead ends: 55008 [2022-11-16 11:07:10,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:10,834 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 486 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:10,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 688 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-16 11:07:10,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55008 states. [2022-11-16 11:07:11,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55008 to 54999. [2022-11-16 11:07:11,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54999 states, 54998 states have (on average 1.0856394777991927) internal successors, (59708), 54998 states have internal predecessors, (59708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:11,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54999 states to 54999 states and 59708 transitions. [2022-11-16 11:07:11,655 INFO L78 Accepts]: Start accepts. Automaton has 54999 states and 59708 transitions. Word has length 665 [2022-11-16 11:07:11,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:11,655 INFO L495 AbstractCegarLoop]: Abstraction has 54999 states and 59708 transitions. [2022-11-16 11:07:11,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:11,655 INFO L276 IsEmpty]: Start isEmpty. Operand 54999 states and 59708 transitions. [2022-11-16 11:07:11,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2022-11-16 11:07:11,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:11,675 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-11-16 11:07:11,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:07:11,675 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:11,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:11,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1764057692, now seen corresponding path program 1 times [2022-11-16 11:07:11,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:11,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130976929] [2022-11-16 11:07:11,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:11,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 914 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2022-11-16 11:07:13,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:13,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130976929] [2022-11-16 11:07:13,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130976929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:13,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:13,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:07:13,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150763084] [2022-11-16 11:07:13,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:13,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:07:13,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:13,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:07:13,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:07:13,017 INFO L87 Difference]: Start difference. First operand 54999 states and 59708 transitions. Second operand has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:16,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:16,949 INFO L93 Difference]: Finished difference Result 127464 states and 138322 transitions. [2022-11-16 11:07:16,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:16,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 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 677 [2022-11-16 11:07:16,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:17,130 INFO L225 Difference]: With dead ends: 127464 [2022-11-16 11:07:17,131 INFO L226 Difference]: Without dead ends: 72467 [2022-11-16 11:07:17,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:07:17,151 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 827 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2253 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 2656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 2253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:17,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 171 Invalid, 2656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 2253 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-16 11:07:17,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72467 states. [2022-11-16 11:07:17,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72467 to 70328. [2022-11-16 11:07:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70328 states, 70327 states have (on average 1.0841213189813301) internal successors, (76243), 70327 states have internal predecessors, (76243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:18,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70328 states to 70328 states and 76243 transitions. [2022-11-16 11:07:18,165 INFO L78 Accepts]: Start accepts. Automaton has 70328 states and 76243 transitions. Word has length 677 [2022-11-16 11:07:18,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:18,165 INFO L495 AbstractCegarLoop]: Abstraction has 70328 states and 76243 transitions. [2022-11-16 11:07:18,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:18,166 INFO L276 IsEmpty]: Start isEmpty. Operand 70328 states and 76243 transitions. [2022-11-16 11:07:18,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2022-11-16 11:07:18,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:18,228 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-11-16 11:07:18,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:07:18,229 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:18,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:18,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1637063526, now seen corresponding path program 1 times [2022-11-16 11:07:18,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:18,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969584969] [2022-11-16 11:07:18,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:18,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:19,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 893 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-11-16 11:07:19,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:19,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969584969] [2022-11-16 11:07:19,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969584969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:19,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:19,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:07:19,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062648521] [2022-11-16 11:07:19,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:19,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:19,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:19,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:19,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:19,081 INFO L87 Difference]: Start difference. First operand 70328 states and 76243 transitions. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:21,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:21,888 INFO L93 Difference]: Finished difference Result 152577 states and 165681 transitions. [2022-11-16 11:07:21,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:21,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 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 696 [2022-11-16 11:07:21,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:21,958 INFO L225 Difference]: With dead ends: 152577 [2022-11-16 11:07:21,958 INFO L226 Difference]: Without dead ends: 82251 [2022-11-16 11:07:21,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:21,981 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 383 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:21,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 298 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-16 11:07:22,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82251 states. [2022-11-16 11:07:23,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82251 to 80540. [2022-11-16 11:07:23,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80540 states, 80539 states have (on average 1.079626019692323) internal successors, (86952), 80539 states have internal predecessors, (86952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:23,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80540 states to 80540 states and 86952 transitions. [2022-11-16 11:07:23,177 INFO L78 Accepts]: Start accepts. Automaton has 80540 states and 86952 transitions. Word has length 696 [2022-11-16 11:07:23,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:23,178 INFO L495 AbstractCegarLoop]: Abstraction has 80540 states and 86952 transitions. [2022-11-16 11:07:23,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:23,178 INFO L276 IsEmpty]: Start isEmpty. Operand 80540 states and 86952 transitions. [2022-11-16 11:07:23,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2022-11-16 11:07:23,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:23,206 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:23,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:07:23,206 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:23,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:23,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1592193129, now seen corresponding path program 1 times [2022-11-16 11:07:23,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:23,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735026749] [2022-11-16 11:07:23,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:23,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,950 INFO L134 CoverageAnalysis]: Checked inductivity of 878 backedges. 653 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-16 11:07:23,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:23,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735026749] [2022-11-16 11:07:23,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735026749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:23,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:23,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:07:23,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033855625] [2022-11-16 11:07:23,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:23,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:23,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:23,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:23,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:23,955 INFO L87 Difference]: Start difference. First operand 80540 states and 86952 transitions. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:26,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:26,553 INFO L93 Difference]: Finished difference Result 159794 states and 172448 transitions. [2022-11-16 11:07:26,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:26,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 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 749 [2022-11-16 11:07:26,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:26,877 INFO L225 Difference]: With dead ends: 159794 [2022-11-16 11:07:26,877 INFO L226 Difference]: Without dead ends: 79254 [2022-11-16 11:07:26,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:26,906 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 335 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:26,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 683 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-16 11:07:26,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79254 states. [2022-11-16 11:07:27,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79254 to 77977. [2022-11-16 11:07:27,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77977 states, 77976 states have (on average 1.0655586334256695) internal successors, (83088), 77976 states have internal predecessors, (83088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:27,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77977 states to 77977 states and 83088 transitions. [2022-11-16 11:07:27,881 INFO L78 Accepts]: Start accepts. Automaton has 77977 states and 83088 transitions. Word has length 749 [2022-11-16 11:07:27,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:27,882 INFO L495 AbstractCegarLoop]: Abstraction has 77977 states and 83088 transitions. [2022-11-16 11:07:27,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:27,882 INFO L276 IsEmpty]: Start isEmpty. Operand 77977 states and 83088 transitions. [2022-11-16 11:07:27,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2022-11-16 11:07:27,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:27,909 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-11-16 11:07:27,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:07:27,910 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:27,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:27,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1256177813, now seen corresponding path program 1 times [2022-11-16 11:07:27,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:27,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117484662] [2022-11-16 11:07:27,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:27,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:28,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 757 proven. 82 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2022-11-16 11:07:28,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:28,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117484662] [2022-11-16 11:07:28,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117484662] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:28,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609882844] [2022-11-16 11:07:28,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:28,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:28,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:29,003 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:29,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:07:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:29,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:07:29,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:30,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 757 proven. 82 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2022-11-16 11:07:30,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:07:31,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 839 proven. 0 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2022-11-16 11:07:31,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609882844] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:31,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:07:31,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-11-16 11:07:31,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472279640] [2022-11-16 11:07:31,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:31,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:07:31,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:31,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:07:31,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:07:31,081 INFO L87 Difference]: Start difference. First operand 77977 states and 83088 transitions. Second operand has 4 states, 4 states have (on average 119.75) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:36,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:36,195 INFO L93 Difference]: Finished difference Result 173852 states and 185471 transitions. [2022-11-16 11:07:36,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:36,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 119.75) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 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 758 [2022-11-16 11:07:36,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:36,283 INFO L225 Difference]: With dead ends: 173852 [2022-11-16 11:07:36,283 INFO L226 Difference]: Without dead ends: 95452 [2022-11-16 11:07:36,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1517 GetRequests, 1511 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:07:36,308 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 821 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 2052 mSolverCounterSat, 699 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 699 IncrementalHoareTripleChecker+Valid, 2052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:36,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 114 Invalid, 2751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [699 Valid, 2052 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-16 11:07:36,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95452 states. [2022-11-16 11:07:37,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95452 to 82685. [2022-11-16 11:07:37,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82685 states, 82684 states have (on average 1.0657200909486721) internal successors, (88118), 82684 states have internal predecessors, (88118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:37,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82685 states to 82685 states and 88118 transitions. [2022-11-16 11:07:37,437 INFO L78 Accepts]: Start accepts. Automaton has 82685 states and 88118 transitions. Word has length 758 [2022-11-16 11:07:37,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:37,437 INFO L495 AbstractCegarLoop]: Abstraction has 82685 states and 88118 transitions. [2022-11-16 11:07:37,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.75) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:37,437 INFO L276 IsEmpty]: Start isEmpty. Operand 82685 states and 88118 transitions. [2022-11-16 11:07:37,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2022-11-16 11:07:37,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:37,469 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:07:37,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:07:37,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:37,671 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:37,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:37,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1804847060, now seen corresponding path program 1 times [2022-11-16 11:07:37,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:37,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544309871] [2022-11-16 11:07:37,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:37,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1441 backedges. 1088 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2022-11-16 11:07:38,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:38,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544309871] [2022-11-16 11:07:38,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544309871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:38,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:38,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:07:38,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053042534] [2022-11-16 11:07:38,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:38,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:38,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:38,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:38,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:38,742 INFO L87 Difference]: Start difference. First operand 82685 states and 88118 transitions. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:41,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:41,641 INFO L93 Difference]: Finished difference Result 176472 states and 188139 transitions. [2022-11-16 11:07:41,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:41,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 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 784 [2022-11-16 11:07:41,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:41,731 INFO L225 Difference]: With dead ends: 176472 [2022-11-16 11:07:41,731 INFO L226 Difference]: Without dead ends: 93789 [2022-11-16 11:07:41,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:41,762 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 264 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:41,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 243 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-16 11:07:41,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93789 states. [2022-11-16 11:07:42,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93789 to 86097. [2022-11-16 11:07:42,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86097 states, 86096 states have (on average 1.0659031778479837) internal successors, (91770), 86096 states have internal predecessors, (91770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:43,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86097 states to 86097 states and 91770 transitions. [2022-11-16 11:07:43,069 INFO L78 Accepts]: Start accepts. Automaton has 86097 states and 91770 transitions. Word has length 784 [2022-11-16 11:07:43,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:43,070 INFO L495 AbstractCegarLoop]: Abstraction has 86097 states and 91770 transitions. [2022-11-16 11:07:43,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:43,070 INFO L276 IsEmpty]: Start isEmpty. Operand 86097 states and 91770 transitions. [2022-11-16 11:07:43,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2022-11-16 11:07:43,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:43,125 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:07:43,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:07:43,125 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:43,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:43,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1725455319, now seen corresponding path program 1 times [2022-11-16 11:07:43,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:43,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606907874] [2022-11-16 11:07:43,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:43,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 1209 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2022-11-16 11:07:44,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:44,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606907874] [2022-11-16 11:07:44,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606907874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:44,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:44,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:07:44,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28107732] [2022-11-16 11:07:44,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:44,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:44,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:44,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:44,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:44,078 INFO L87 Difference]: Start difference. First operand 86097 states and 91770 transitions. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:46,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:46,977 INFO L93 Difference]: Finished difference Result 179874 states and 191613 transitions. [2022-11-16 11:07:46,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:46,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 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 802 [2022-11-16 11:07:46,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:47,065 INFO L225 Difference]: With dead ends: 179874 [2022-11-16 11:07:47,066 INFO L226 Difference]: Without dead ends: 93779 [2022-11-16 11:07:47,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:47,100 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 426 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:47,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 232 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-16 11:07:47,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93779 states. [2022-11-16 11:07:48,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93779 to 88230. [2022-11-16 11:07:48,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88230 states, 88229 states have (on average 1.0642419159233358) internal successors, (93897), 88229 states have internal predecessors, (93897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:48,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88230 states to 88230 states and 93897 transitions. [2022-11-16 11:07:48,267 INFO L78 Accepts]: Start accepts. Automaton has 88230 states and 93897 transitions. Word has length 802 [2022-11-16 11:07:48,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:48,267 INFO L495 AbstractCegarLoop]: Abstraction has 88230 states and 93897 transitions. [2022-11-16 11:07:48,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:48,268 INFO L276 IsEmpty]: Start isEmpty. Operand 88230 states and 93897 transitions. [2022-11-16 11:07:48,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2022-11-16 11:07:48,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:48,309 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:07:48,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 11:07:48,310 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:48,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:48,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2052133367, now seen corresponding path program 1 times [2022-11-16 11:07:48,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:48,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438125717] [2022-11-16 11:07:48,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:48,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:49,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1662 backedges. 1152 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2022-11-16 11:07:49,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:49,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438125717] [2022-11-16 11:07:49,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438125717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:49,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:49,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:07:49,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352014805] [2022-11-16 11:07:49,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:49,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:49,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:49,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:49,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:49,553 INFO L87 Difference]: Start difference. First operand 88230 states and 93897 transitions. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:52,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:52,431 INFO L93 Difference]: Finished difference Result 181575 states and 193112 transitions. [2022-11-16 11:07:52,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:52,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 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 810 [2022-11-16 11:07:52,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:52,523 INFO L225 Difference]: With dead ends: 181575 [2022-11-16 11:07:52,523 INFO L226 Difference]: Without dead ends: 93347 [2022-11-16 11:07:52,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:52,558 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 317 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:52,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 276 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-16 11:07:52,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93347 states. [2022-11-16 11:07:53,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93347 to 87380. [2022-11-16 11:07:53,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87380 states, 87379 states have (on average 1.0636308495176185) internal successors, (92939), 87379 states have internal predecessors, (92939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:53,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87380 states to 87380 states and 92939 transitions. [2022-11-16 11:07:53,750 INFO L78 Accepts]: Start accepts. Automaton has 87380 states and 92939 transitions. Word has length 810 [2022-11-16 11:07:53,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:53,750 INFO L495 AbstractCegarLoop]: Abstraction has 87380 states and 92939 transitions. [2022-11-16 11:07:53,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:53,750 INFO L276 IsEmpty]: Start isEmpty. Operand 87380 states and 92939 transitions. [2022-11-16 11:07:53,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2022-11-16 11:07:53,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:53,784 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:53,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 11:07:53,785 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:53,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:53,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1747475996, now seen corresponding path program 1 times [2022-11-16 11:07:53,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:53,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104664473] [2022-11-16 11:07:53,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:53,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:54,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1229 backedges. 695 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2022-11-16 11:07:54,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:54,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104664473] [2022-11-16 11:07:54,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104664473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:54,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:54,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:07:54,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546494966] [2022-11-16 11:07:54,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:54,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:07:54,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:54,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:07:54,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:07:54,894 INFO L87 Difference]: Start difference. First operand 87380 states and 92939 transitions. Second operand has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:59,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:59,590 INFO L93 Difference]: Finished difference Result 191415 states and 203345 transitions. [2022-11-16 11:07:59,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:59,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 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 827 [2022-11-16 11:07:59,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:59,739 INFO L225 Difference]: With dead ends: 191415 [2022-11-16 11:07:59,740 INFO L226 Difference]: Without dead ends: 104037 [2022-11-16 11:07:59,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:07:59,787 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 820 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2804 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 3044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 2804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:59,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 694 Invalid, 3044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 2804 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-16 11:07:59,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104037 states. [2022-11-16 11:08:00,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104037 to 86529. [2022-11-16 11:08:01,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86529 states, 86528 states have (on average 1.0631356323964498) internal successors, (91991), 86528 states have internal predecessors, (91991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:01,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86529 states to 86529 states and 91991 transitions. [2022-11-16 11:08:01,517 INFO L78 Accepts]: Start accepts. Automaton has 86529 states and 91991 transitions. Word has length 827 [2022-11-16 11:08:01,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:01,518 INFO L495 AbstractCegarLoop]: Abstraction has 86529 states and 91991 transitions. [2022-11-16 11:08:01,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:01,518 INFO L276 IsEmpty]: Start isEmpty. Operand 86529 states and 91991 transitions. [2022-11-16 11:08:01,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2022-11-16 11:08:01,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:01,560 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-11-16 11:08:01,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 11:08:01,561 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:01,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:01,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1488477057, now seen corresponding path program 1 times [2022-11-16 11:08:01,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:01,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298855466] [2022-11-16 11:08:01,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:01,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1774 backedges. 719 proven. 73 refuted. 0 times theorem prover too weak. 982 trivial. 0 not checked. [2022-11-16 11:08:02,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:02,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298855466] [2022-11-16 11:08:02,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298855466] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:08:02,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917636062] [2022-11-16 11:08:02,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:02,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:02,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:02,627 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:02,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f76b382a-ee3d-4555-a4dc-eee41420b718/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:08:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:02,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:08:02,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:03,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1774 backedges. 719 proven. 73 refuted. 0 times theorem prover too weak. 982 trivial. 0 not checked. [2022-11-16 11:08:03,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:08:03,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1774 backedges. 792 proven. 0 refuted. 0 times theorem prover too weak. 982 trivial. 0 not checked. [2022-11-16 11:08:03,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917636062] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:08:03,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:08:03,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-11-16 11:08:03,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548040534] [2022-11-16 11:08:03,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:03,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:08:03,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:03,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:08:03,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:08:03,832 INFO L87 Difference]: Start difference. First operand 86529 states and 91991 transitions. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:08,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:08,551 INFO L93 Difference]: Finished difference Result 189681 states and 201904 transitions. [2022-11-16 11:08:08,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:08:08,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 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 851 [2022-11-16 11:08:08,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:08,676 INFO L225 Difference]: With dead ends: 189681 [2022-11-16 11:08:08,676 INFO L226 Difference]: Without dead ends: 103154 [2022-11-16 11:08:08,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1703 GetRequests, 1697 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:08:08,718 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 807 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2240 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 2622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 2240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:08,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 209 Invalid, 2622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 2240 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time]