./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d2ad25966f5b06d930031b35708c7035a644982dad73f08910281a8c7df501a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 17:14:51,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:14:51,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:14:51,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:14:51,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:14:51,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:14:51,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:14:51,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:14:51,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:14:51,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:14:51,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:14:51,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:14:51,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:14:51,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:14:51,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:14:51,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:14:51,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:14:51,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:14:51,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:14:51,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:14:51,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:14:51,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:14:51,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:14:51,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:14:51,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:14:51,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:14:51,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:14:51,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:14:51,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:14:51,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:14:51,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:14:51,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:14:51,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:14:51,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:14:51,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:14:51,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:14:51,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:14:51,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:14:51,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:14:51,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:14:51,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:14:51,475 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 17:14:51,489 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:14:51,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:14:51,489 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:14:51,489 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:14:51,490 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:14:51,490 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:14:51,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:14:51,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:14:51,491 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:14:51,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:14:51,491 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:14:51,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:14:51,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:14:51,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:14:51,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:14:51,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:14:51,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:14:51,492 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:14:51,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:14:51,492 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:14:51,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:14:51,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:14:51,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:14:51,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:14:51,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:14:51,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:14:51,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:14:51,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:14:51,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:14:51,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:14:51,493 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:14:51,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:14:51,493 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:14:51,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:14:51,494 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:14:51,494 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d2ad25966f5b06d930031b35708c7035a644982dad73f08910281a8c7df501a [2022-12-13 17:14:51,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:14:51,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:14:51,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:14:51,691 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:14:51,691 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:14:51,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-12-13 17:14:54,180 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:14:54,390 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:14:54,390 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-12-13 17:14:54,399 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/data/bda1e463b/ea0825a06931493ab5daa2d23eb9f186/FLAGc73792717 [2022-12-13 17:14:54,739 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/data/bda1e463b/ea0825a06931493ab5daa2d23eb9f186 [2022-12-13 17:14:54,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:14:54,742 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:14:54,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:14:54,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:14:54,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:14:54,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:14:54" (1/1) ... [2022-12-13 17:14:54,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d91f375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:54, skipping insertion in model container [2022-12-13 17:14:54,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:14:54" (1/1) ... [2022-12-13 17:14:54,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:14:54,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:14:54,928 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4373,4386] [2022-12-13 17:14:54,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:14:54,960 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:14:54,987 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4373,4386] [2022-12-13 17:14:55,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:14:55,013 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:14:55,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:55 WrapperNode [2022-12-13 17:14:55,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:14:55,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:14:55,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:14:55,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:14:55,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:55" (1/1) ... [2022-12-13 17:14:55,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:55" (1/1) ... [2022-12-13 17:14:55,040 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 320 [2022-12-13 17:14:55,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:14:55,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:14:55,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:14:55,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:14:55,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:55" (1/1) ... [2022-12-13 17:14:55,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:55" (1/1) ... [2022-12-13 17:14:55,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:55" (1/1) ... [2022-12-13 17:14:55,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:55" (1/1) ... [2022-12-13 17:14:55,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:55" (1/1) ... [2022-12-13 17:14:55,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:55" (1/1) ... [2022-12-13 17:14:55,057 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:55" (1/1) ... [2022-12-13 17:14:55,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:55" (1/1) ... [2022-12-13 17:14:55,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:14:55,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:14:55,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:14:55,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:14:55,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:55" (1/1) ... [2022-12-13 17:14:55,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:14:55,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:14:55,086 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:14:55,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:14:55,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:14:55,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:14:55,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:14:55,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:14:55,200 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:14:55,202 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:14:55,461 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:14:55,471 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:14:55,471 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 17:14:55,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:14:55 BoogieIcfgContainer [2022-12-13 17:14:55,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:14:55,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:14:55,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:14:55,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:14:55,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:14:54" (1/3) ... [2022-12-13 17:14:55,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b3e204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:14:55, skipping insertion in model container [2022-12-13 17:14:55,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:55" (2/3) ... [2022-12-13 17:14:55,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b3e204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:14:55, skipping insertion in model container [2022-12-13 17:14:55,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:14:55" (3/3) ... [2022-12-13 17:14:55,479 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-12-13 17:14:55,493 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:14:55,493 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 17:14:55,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:14:55,534 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;@1af5921a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:14:55,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 17:14:55,537 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 78 states have (on average 1.6923076923076923) internal successors, (132), 79 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:55,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-13 17:14:55,543 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:55,543 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] [2022-12-13 17:14:55,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:55,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:55,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1485847759, now seen corresponding path program 1 times [2022-12-13 17:14:55,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:55,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609394545] [2022-12-13 17:14:55,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:55,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:55,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:55,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:55,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609394545] [2022-12-13 17:14:55,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609394545] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:55,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:55,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:14:55,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910726504] [2022-12-13 17:14:55,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:55,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:14:55,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:55,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:14:55,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:55,787 INFO L87 Difference]: Start difference. First operand has 80 states, 78 states have (on average 1.6923076923076923) internal successors, (132), 79 states have internal predecessors, (132), 0 states have call successors, (0), 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 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:55,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:55,840 INFO L93 Difference]: Finished difference Result 184 states and 294 transitions. [2022-12-13 17:14:55,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:14:55,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-12-13 17:14:55,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:55,850 INFO L225 Difference]: With dead ends: 184 [2022-12-13 17:14:55,850 INFO L226 Difference]: Without dead ends: 118 [2022-12-13 17:14:55,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:55,855 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 85 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:55,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 263 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:14:55,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-12-13 17:14:55,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2022-12-13 17:14:55,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.4956521739130435) internal successors, (172), 115 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:55,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 172 transitions. [2022-12-13 17:14:55,893 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 172 transitions. Word has length 37 [2022-12-13 17:14:55,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:55,894 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 172 transitions. [2022-12-13 17:14:55,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:55,894 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 172 transitions. [2022-12-13 17:14:55,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 17:14:55,895 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:55,895 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] [2022-12-13 17:14:55,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:14:55,896 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:55,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:55,897 INFO L85 PathProgramCache]: Analyzing trace with hash -498229074, now seen corresponding path program 1 times [2022-12-13 17:14:55,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:55,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381721587] [2022-12-13 17:14:55,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:55,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:55,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:55,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:55,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381721587] [2022-12-13 17:14:55,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381721587] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:55,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:55,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:14:55,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654253926] [2022-12-13 17:14:55,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:55,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:14:55,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:55,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:14:55,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:55,979 INFO L87 Difference]: Start difference. First operand 116 states and 172 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:56,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:56,019 INFO L93 Difference]: Finished difference Result 276 states and 424 transitions. [2022-12-13 17:14:56,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:14:56,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-12-13 17:14:56,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:56,022 INFO L225 Difference]: With dead ends: 276 [2022-12-13 17:14:56,022 INFO L226 Difference]: Without dead ends: 180 [2022-12-13 17:14:56,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:56,023 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 69 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:56,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 213 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:14:56,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-12-13 17:14:56,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2022-12-13 17:14:56,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.5197740112994351) internal successors, (269), 177 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:56,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 269 transitions. [2022-12-13 17:14:56,046 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 269 transitions. Word has length 38 [2022-12-13 17:14:56,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:56,047 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 269 transitions. [2022-12-13 17:14:56,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:56,047 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 269 transitions. [2022-12-13 17:14:56,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-13 17:14:56,048 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:56,048 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] [2022-12-13 17:14:56,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:14:56,049 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:56,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:56,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1494403672, now seen corresponding path program 1 times [2022-12-13 17:14:56,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:56,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228417210] [2022-12-13 17:14:56,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:56,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:56,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:56,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228417210] [2022-12-13 17:14:56,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228417210] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:56,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:56,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:14:56,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970869494] [2022-12-13 17:14:56,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:56,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:14:56,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:56,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:14:56,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:14:56,144 INFO L87 Difference]: Start difference. First operand 178 states and 269 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:56,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:56,250 INFO L93 Difference]: Finished difference Result 810 states and 1265 transitions. [2022-12-13 17:14:56,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:14:56,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-12-13 17:14:56,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:56,254 INFO L225 Difference]: With dead ends: 810 [2022-12-13 17:14:56,254 INFO L226 Difference]: Without dead ends: 652 [2022-12-13 17:14:56,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:14:56,256 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 447 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:56,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 620 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:14:56,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-12-13 17:14:56,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 334. [2022-12-13 17:14:56,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 1.5285285285285286) internal successors, (509), 333 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:56,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 509 transitions. [2022-12-13 17:14:56,310 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 509 transitions. Word has length 39 [2022-12-13 17:14:56,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:56,310 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 509 transitions. [2022-12-13 17:14:56,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:56,311 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 509 transitions. [2022-12-13 17:14:56,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-13 17:14:56,311 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:56,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:14:56,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:14:56,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:56,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:56,312 INFO L85 PathProgramCache]: Analyzing trace with hash -937582741, now seen corresponding path program 1 times [2022-12-13 17:14:56,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:56,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963995554] [2022-12-13 17:14:56,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:56,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:56,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:56,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963995554] [2022-12-13 17:14:56,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963995554] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:56,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:56,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:14:56,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843607782] [2022-12-13 17:14:56,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:56,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:14:56,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:56,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:14:56,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:14:56,402 INFO L87 Difference]: Start difference. First operand 334 states and 509 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:56,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:56,540 INFO L93 Difference]: Finished difference Result 1164 states and 1792 transitions. [2022-12-13 17:14:56,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:14:56,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-12-13 17:14:56,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:56,543 INFO L225 Difference]: With dead ends: 1164 [2022-12-13 17:14:56,544 INFO L226 Difference]: Without dead ends: 850 [2022-12-13 17:14:56,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:14:56,547 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 264 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:56,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 334 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:14:56,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-12-13 17:14:56,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 846. [2022-12-13 17:14:56,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 845 states have (on average 1.5301775147928993) internal successors, (1293), 845 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:56,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1293 transitions. [2022-12-13 17:14:56,633 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1293 transitions. Word has length 40 [2022-12-13 17:14:56,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:56,634 INFO L495 AbstractCegarLoop]: Abstraction has 846 states and 1293 transitions. [2022-12-13 17:14:56,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:56,634 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1293 transitions. [2022-12-13 17:14:56,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-13 17:14:56,635 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:56,636 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] [2022-12-13 17:14:56,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 17:14:56,636 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:56,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:56,637 INFO L85 PathProgramCache]: Analyzing trace with hash 936362024, now seen corresponding path program 1 times [2022-12-13 17:14:56,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:56,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394749025] [2022-12-13 17:14:56,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:56,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:56,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:56,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:56,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394749025] [2022-12-13 17:14:56,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394749025] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:56,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:56,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:14:56,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003321183] [2022-12-13 17:14:56,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:56,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:14:56,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:56,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:14:56,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:56,689 INFO L87 Difference]: Start difference. First operand 846 states and 1293 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:56,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:56,829 INFO L93 Difference]: Finished difference Result 2234 states and 3407 transitions. [2022-12-13 17:14:56,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:14:56,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-12-13 17:14:56,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:56,833 INFO L225 Difference]: With dead ends: 2234 [2022-12-13 17:14:56,834 INFO L226 Difference]: Without dead ends: 1408 [2022-12-13 17:14:56,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:56,835 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 78 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:56,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 261 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:14:56,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2022-12-13 17:14:56,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1406. [2022-12-13 17:14:56,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1405 states have (on average 1.5010676156583629) internal successors, (2109), 1405 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:56,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 2109 transitions. [2022-12-13 17:14:56,974 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 2109 transitions. Word has length 40 [2022-12-13 17:14:56,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:56,975 INFO L495 AbstractCegarLoop]: Abstraction has 1406 states and 2109 transitions. [2022-12-13 17:14:56,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:56,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 2109 transitions. [2022-12-13 17:14:56,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 17:14:56,976 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:56,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:14:56,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:14:56,976 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:56,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:56,977 INFO L85 PathProgramCache]: Analyzing trace with hash -669019710, now seen corresponding path program 1 times [2022-12-13 17:14:56,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:56,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751355871] [2022-12-13 17:14:56,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:56,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:57,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:57,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:57,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751355871] [2022-12-13 17:14:57,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751355871] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:57,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:57,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:14:57,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489847720] [2022-12-13 17:14:57,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:57,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:14:57,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:57,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:14:57,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:14:57,049 INFO L87 Difference]: Start difference. First operand 1406 states and 2109 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:57,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:57,414 INFO L93 Difference]: Finished difference Result 4178 states and 6287 transitions. [2022-12-13 17:14:57,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:14:57,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-12-13 17:14:57,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:57,421 INFO L225 Difference]: With dead ends: 4178 [2022-12-13 17:14:57,421 INFO L226 Difference]: Without dead ends: 2792 [2022-12-13 17:14:57,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:14:57,423 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 457 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:57,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 131 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:14:57,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2022-12-13 17:14:57,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2790. [2022-12-13 17:14:57,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 2789 states have (on average 1.4933667981355325) internal successors, (4165), 2789 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:57,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 4165 transitions. [2022-12-13 17:14:57,637 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 4165 transitions. Word has length 42 [2022-12-13 17:14:57,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:57,637 INFO L495 AbstractCegarLoop]: Abstraction has 2790 states and 4165 transitions. [2022-12-13 17:14:57,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:57,638 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 4165 transitions. [2022-12-13 17:14:57,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 17:14:57,638 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:57,638 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] [2022-12-13 17:14:57,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 17:14:57,639 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:57,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:57,639 INFO L85 PathProgramCache]: Analyzing trace with hash 957144957, now seen corresponding path program 1 times [2022-12-13 17:14:57,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:57,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761075281] [2022-12-13 17:14:57,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:57,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:57,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:57,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:57,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761075281] [2022-12-13 17:14:57,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761075281] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:57,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:57,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:14:57,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131906127] [2022-12-13 17:14:57,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:57,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:14:57,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:57,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:14:57,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:14:57,797 INFO L87 Difference]: Start difference. First operand 2790 states and 4165 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:58,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:58,443 INFO L93 Difference]: Finished difference Result 5752 states and 8502 transitions. [2022-12-13 17:14:58,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:14:58,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-12-13 17:14:58,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:58,459 INFO L225 Difference]: With dead ends: 5752 [2022-12-13 17:14:58,459 INFO L226 Difference]: Without dead ends: 5750 [2022-12-13 17:14:58,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:14:58,462 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 168 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:58,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 523 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:14:58,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5750 states. [2022-12-13 17:14:58,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5750 to 2982. [2022-12-13 17:14:58,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2981 states have (on average 1.461590070446159) internal successors, (4357), 2981 states have internal predecessors, (4357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:58,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 4357 transitions. [2022-12-13 17:14:58,799 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 4357 transitions. Word has length 42 [2022-12-13 17:14:58,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:58,800 INFO L495 AbstractCegarLoop]: Abstraction has 2982 states and 4357 transitions. [2022-12-13 17:14:58,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:58,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 4357 transitions. [2022-12-13 17:14:58,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-13 17:14:58,800 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:58,800 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] [2022-12-13 17:14:58,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 17:14:58,801 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:58,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:58,801 INFO L85 PathProgramCache]: Analyzing trace with hash -382704394, now seen corresponding path program 1 times [2022-12-13 17:14:58,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:58,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157321240] [2022-12-13 17:14:58,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:58,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:58,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:58,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:58,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157321240] [2022-12-13 17:14:58,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157321240] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:58,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:58,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:14:58,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486667874] [2022-12-13 17:14:58,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:58,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:14:58,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:58,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:14:58,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:58,838 INFO L87 Difference]: Start difference. First operand 2982 states and 4357 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:59,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:59,266 INFO L93 Difference]: Finished difference Result 7124 states and 10403 transitions. [2022-12-13 17:14:59,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:14:59,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-12-13 17:14:59,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:59,276 INFO L225 Difference]: With dead ends: 7124 [2022-12-13 17:14:59,276 INFO L226 Difference]: Without dead ends: 4162 [2022-12-13 17:14:59,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:59,280 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 59 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:59,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 197 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:14:59,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4162 states. [2022-12-13 17:14:59,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4162 to 4160. [2022-12-13 17:14:59,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4160 states, 4159 states have (on average 1.4486655446020678) internal successors, (6025), 4159 states have internal predecessors, (6025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:59,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4160 states to 4160 states and 6025 transitions. [2022-12-13 17:14:59,692 INFO L78 Accepts]: Start accepts. Automaton has 4160 states and 6025 transitions. Word has length 43 [2022-12-13 17:14:59,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:59,693 INFO L495 AbstractCegarLoop]: Abstraction has 4160 states and 6025 transitions. [2022-12-13 17:14:59,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:59,693 INFO L276 IsEmpty]: Start isEmpty. Operand 4160 states and 6025 transitions. [2022-12-13 17:14:59,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-13 17:14:59,694 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:59,694 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 17:14:59,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 17:14:59,695 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:59,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:59,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1624116797, now seen corresponding path program 1 times [2022-12-13 17:14:59,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:59,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418451476] [2022-12-13 17:14:59,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:59,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:59,803 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:14:59,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:59,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418451476] [2022-12-13 17:14:59,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418451476] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:14:59,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199161992] [2022-12-13 17:14:59,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:59,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:14:59,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:14:59,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:14:59,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:14:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:59,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 17:14:59,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:15:00,020 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:15:00,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:15:00,270 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:15:00,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199161992] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:15:00,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:15:00,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 5] total 11 [2022-12-13 17:15:00,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878557271] [2022-12-13 17:15:00,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:15:00,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 17:15:00,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:15:00,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 17:15:00,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:15:00,271 INFO L87 Difference]: Start difference. First operand 4160 states and 6025 transitions. Second operand has 11 states, 11 states have (on average 15.0) internal successors, (165), 11 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:01,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:15:01,344 INFO L93 Difference]: Finished difference Result 12995 states and 18966 transitions. [2022-12-13 17:15:01,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:15:01,344 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.0) internal successors, (165), 11 states have internal predecessors, (165), 0 states have call successors, (0), 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 60 [2022-12-13 17:15:01,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:15:01,364 INFO L225 Difference]: With dead ends: 12995 [2022-12-13 17:15:01,364 INFO L226 Difference]: Without dead ends: 10033 [2022-12-13 17:15:01,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:15:01,368 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 429 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:15:01,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 1111 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:15:01,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10033 states. [2022-12-13 17:15:02,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10033 to 9568. [2022-12-13 17:15:02,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9568 states, 9567 states have (on average 1.4392181457092088) internal successors, (13769), 9567 states have internal predecessors, (13769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:02,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9568 states to 9568 states and 13769 transitions. [2022-12-13 17:15:02,309 INFO L78 Accepts]: Start accepts. Automaton has 9568 states and 13769 transitions. Word has length 60 [2022-12-13 17:15:02,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:15:02,309 INFO L495 AbstractCegarLoop]: Abstraction has 9568 states and 13769 transitions. [2022-12-13 17:15:02,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.0) internal successors, (165), 11 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:02,309 INFO L276 IsEmpty]: Start isEmpty. Operand 9568 states and 13769 transitions. [2022-12-13 17:15:02,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 17:15:02,310 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:15:02,310 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:15:02,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:15:02,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:15:02,512 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:15:02,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:15:02,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1000125924, now seen corresponding path program 1 times [2022-12-13 17:15:02,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:15:02,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336109449] [2022-12-13 17:15:02,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:02,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:15:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:02,590 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 17:15:02,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:15:02,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336109449] [2022-12-13 17:15:02,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336109449] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:15:02,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:15:02,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:15:02,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013363410] [2022-12-13 17:15:02,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:15:02,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:15:02,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:15:02,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:15:02,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:15:02,591 INFO L87 Difference]: Start difference. First operand 9568 states and 13769 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:03,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:15:03,851 INFO L93 Difference]: Finished difference Result 17580 states and 25411 transitions. [2022-12-13 17:15:03,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:15:03,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 61 [2022-12-13 17:15:03,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:15:03,879 INFO L225 Difference]: With dead ends: 17580 [2022-12-13 17:15:03,879 INFO L226 Difference]: Without dead ends: 14122 [2022-12-13 17:15:03,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:15:03,884 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 310 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:15:03,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 515 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:15:03,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14122 states. [2022-12-13 17:15:05,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14122 to 12596. [2022-12-13 17:15:05,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12596 states, 12595 states have (on average 1.433664152441445) internal successors, (18057), 12595 states have internal predecessors, (18057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12596 states to 12596 states and 18057 transitions. [2022-12-13 17:15:05,178 INFO L78 Accepts]: Start accepts. Automaton has 12596 states and 18057 transitions. Word has length 61 [2022-12-13 17:15:05,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:15:05,179 INFO L495 AbstractCegarLoop]: Abstraction has 12596 states and 18057 transitions. [2022-12-13 17:15:05,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:05,179 INFO L276 IsEmpty]: Start isEmpty. Operand 12596 states and 18057 transitions. [2022-12-13 17:15:05,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 17:15:05,180 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:15:05,180 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:15:05,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 17:15:05,181 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:15:05,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:15:05,181 INFO L85 PathProgramCache]: Analyzing trace with hash -876556853, now seen corresponding path program 1 times [2022-12-13 17:15:05,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:15:05,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774517067] [2022-12-13 17:15:05,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:05,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:15:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:05,215 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:05,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:15:05,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774517067] [2022-12-13 17:15:05,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774517067] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:15:05,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:15:05,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:15:05,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942440579] [2022-12-13 17:15:05,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:15:05,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:15:05,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:15:05,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:15:05,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:15:05,216 INFO L87 Difference]: Start difference. First operand 12596 states and 18057 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:06,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:15:06,778 INFO L93 Difference]: Finished difference Result 20241 states and 28876 transitions. [2022-12-13 17:15:06,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:15:06,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-12-13 17:15:06,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:15:06,796 INFO L225 Difference]: With dead ends: 20241 [2022-12-13 17:15:06,796 INFO L226 Difference]: Without dead ends: 13034 [2022-12-13 17:15:06,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:15:06,801 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 59 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:15:06,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 234 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:15:06,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13034 states. [2022-12-13 17:15:08,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13034 to 12675. [2022-12-13 17:15:08,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12675 states, 12674 states have (on average 1.4024775130187785) internal successors, (17775), 12674 states have internal predecessors, (17775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:08,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12675 states to 12675 states and 17775 transitions. [2022-12-13 17:15:08,024 INFO L78 Accepts]: Start accepts. Automaton has 12675 states and 17775 transitions. Word has length 61 [2022-12-13 17:15:08,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:15:08,024 INFO L495 AbstractCegarLoop]: Abstraction has 12675 states and 17775 transitions. [2022-12-13 17:15:08,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:08,025 INFO L276 IsEmpty]: Start isEmpty. Operand 12675 states and 17775 transitions. [2022-12-13 17:15:08,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 17:15:08,026 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:15:08,026 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 17:15:08,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 17:15:08,026 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:15:08,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:15:08,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1922561508, now seen corresponding path program 1 times [2022-12-13 17:15:08,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:15:08,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107459349] [2022-12-13 17:15:08,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:08,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:15:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:08,054 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:08,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:15:08,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107459349] [2022-12-13 17:15:08,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107459349] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:15:08,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:15:08,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:15:08,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723481674] [2022-12-13 17:15:08,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:15:08,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:15:08,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:15:08,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:15:08,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:15:08,056 INFO L87 Difference]: Start difference. First operand 12675 states and 17775 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:10,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:15:10,264 INFO L93 Difference]: Finished difference Result 31013 states and 43309 transitions. [2022-12-13 17:15:10,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:15:10,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-12-13 17:15:10,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:15:10,290 INFO L225 Difference]: With dead ends: 31013 [2022-12-13 17:15:10,290 INFO L226 Difference]: Without dead ends: 21246 [2022-12-13 17:15:10,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:15:10,300 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 56 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:15:10,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 214 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:15:10,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21246 states. [2022-12-13 17:15:12,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21246 to 21195. [2022-12-13 17:15:12,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21195 states, 21194 states have (on average 1.3782674341794847) internal successors, (29211), 21194 states have internal predecessors, (29211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:12,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21195 states to 21195 states and 29211 transitions. [2022-12-13 17:15:12,572 INFO L78 Accepts]: Start accepts. Automaton has 21195 states and 29211 transitions. Word has length 61 [2022-12-13 17:15:12,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:15:12,572 INFO L495 AbstractCegarLoop]: Abstraction has 21195 states and 29211 transitions. [2022-12-13 17:15:12,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:12,573 INFO L276 IsEmpty]: Start isEmpty. Operand 21195 states and 29211 transitions. [2022-12-13 17:15:12,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 17:15:12,574 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:15:12,574 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:15:12,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 17:15:12,574 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:15:12,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:15:12,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1875177684, now seen corresponding path program 1 times [2022-12-13 17:15:12,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:15:12,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081541380] [2022-12-13 17:15:12,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:12,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:15:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:12,629 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 17:15:12,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:15:12,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081541380] [2022-12-13 17:15:12,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081541380] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:15:12,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:15:12,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:15:12,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155886237] [2022-12-13 17:15:12,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:15:12,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:15:12,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:15:12,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:15:12,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:15:12,631 INFO L87 Difference]: Start difference. First operand 21195 states and 29211 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:15,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:15:15,197 INFO L93 Difference]: Finished difference Result 30654 states and 42662 transitions. [2022-12-13 17:15:15,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:15:15,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 61 [2022-12-13 17:15:15,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:15:15,227 INFO L225 Difference]: With dead ends: 30654 [2022-12-13 17:15:15,227 INFO L226 Difference]: Without dead ends: 27204 [2022-12-13 17:15:15,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:15:15,233 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 316 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:15:15,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 509 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:15:15,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27204 states. [2022-12-13 17:15:17,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27204 to 24483. [2022-12-13 17:15:17,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24483 states, 24482 states have (on average 1.3794216158810555) internal successors, (33771), 24482 states have internal predecessors, (33771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:17,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24483 states to 24483 states and 33771 transitions. [2022-12-13 17:15:17,822 INFO L78 Accepts]: Start accepts. Automaton has 24483 states and 33771 transitions. Word has length 61 [2022-12-13 17:15:17,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:15:17,823 INFO L495 AbstractCegarLoop]: Abstraction has 24483 states and 33771 transitions. [2022-12-13 17:15:17,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:17,823 INFO L276 IsEmpty]: Start isEmpty. Operand 24483 states and 33771 transitions. [2022-12-13 17:15:17,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 17:15:17,825 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:15:17,825 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 17:15:17,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 17:15:17,825 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:15:17,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:15:17,825 INFO L85 PathProgramCache]: Analyzing trace with hash -237073659, now seen corresponding path program 1 times [2022-12-13 17:15:17,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:15:17,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459493564] [2022-12-13 17:15:17,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:17,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:15:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:17,880 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:15:17,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:15:17,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459493564] [2022-12-13 17:15:17,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459493564] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:15:17,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:15:17,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:15:17,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403577027] [2022-12-13 17:15:17,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:15:17,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:15:17,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:15:17,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:15:17,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:15:17,883 INFO L87 Difference]: Start difference. First operand 24483 states and 33771 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:21,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:15:21,061 INFO L93 Difference]: Finished difference Result 38062 states and 52932 transitions. [2022-12-13 17:15:21,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:15:21,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 62 [2022-12-13 17:15:21,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:15:21,097 INFO L225 Difference]: With dead ends: 38062 [2022-12-13 17:15:21,097 INFO L226 Difference]: Without dead ends: 32051 [2022-12-13 17:15:21,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:15:21,108 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 306 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:15:21,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 549 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:15:21,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32051 states. [2022-12-13 17:15:24,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32051 to 29315. [2022-12-13 17:15:24,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29315 states, 29314 states have (on average 1.3746673944190488) internal successors, (40297), 29314 states have internal predecessors, (40297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:24,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29315 states to 29315 states and 40297 transitions. [2022-12-13 17:15:24,393 INFO L78 Accepts]: Start accepts. Automaton has 29315 states and 40297 transitions. Word has length 62 [2022-12-13 17:15:24,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:15:24,393 INFO L495 AbstractCegarLoop]: Abstraction has 29315 states and 40297 transitions. [2022-12-13 17:15:24,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:24,393 INFO L276 IsEmpty]: Start isEmpty. Operand 29315 states and 40297 transitions. [2022-12-13 17:15:24,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-13 17:15:24,396 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:15:24,396 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:15:24,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 17:15:24,396 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:15:24,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:15:24,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1938404498, now seen corresponding path program 1 times [2022-12-13 17:15:24,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:15:24,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176011202] [2022-12-13 17:15:24,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:24,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:15:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:24,426 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:24,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:15:24,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176011202] [2022-12-13 17:15:24,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176011202] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:15:24,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:15:24,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:15:24,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430967963] [2022-12-13 17:15:24,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:15:24,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:15:24,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:15:24,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:15:24,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:15:24,428 INFO L87 Difference]: Start difference. First operand 29315 states and 40297 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:27,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:15:27,714 INFO L93 Difference]: Finished difference Result 57372 states and 78487 transitions. [2022-12-13 17:15:27,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:15:27,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-12-13 17:15:27,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:15:27,750 INFO L225 Difference]: With dead ends: 57372 [2022-12-13 17:15:27,750 INFO L226 Difference]: Without dead ends: 30133 [2022-12-13 17:15:27,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:15:27,770 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 56 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:15:27,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 250 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:15:27,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30133 states. [2022-12-13 17:15:31,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30133 to 28786. [2022-12-13 17:15:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28786 states, 28785 states have (on average 1.3459440680910195) internal successors, (38743), 28785 states have internal predecessors, (38743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:31,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28786 states to 28786 states and 38743 transitions. [2022-12-13 17:15:31,168 INFO L78 Accepts]: Start accepts. Automaton has 28786 states and 38743 transitions. Word has length 64 [2022-12-13 17:15:31,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:15:31,168 INFO L495 AbstractCegarLoop]: Abstraction has 28786 states and 38743 transitions. [2022-12-13 17:15:31,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:31,168 INFO L276 IsEmpty]: Start isEmpty. Operand 28786 states and 38743 transitions. [2022-12-13 17:15:31,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 17:15:31,171 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:15:31,171 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:15:31,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 17:15:31,171 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:15:31,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:15:31,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1057682816, now seen corresponding path program 1 times [2022-12-13 17:15:31,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:15:31,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497854885] [2022-12-13 17:15:31,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:31,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:15:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:31,221 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 17:15:31,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:15:31,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497854885] [2022-12-13 17:15:31,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497854885] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:15:31,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:15:31,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:15:31,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896763917] [2022-12-13 17:15:31,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:15:31,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:15:31,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:15:31,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:15:31,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:15:31,223 INFO L87 Difference]: Start difference. First operand 28786 states and 38743 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:35,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:15:35,699 INFO L93 Difference]: Finished difference Result 65902 states and 88551 transitions. [2022-12-13 17:15:35,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:15:35,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 66 [2022-12-13 17:15:35,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:15:35,742 INFO L225 Difference]: With dead ends: 65902 [2022-12-13 17:15:35,742 INFO L226 Difference]: Without dead ends: 37176 [2022-12-13 17:15:35,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:15:35,760 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 413 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:15:35,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 135 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:15:35,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37176 states. [2022-12-13 17:15:39,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37176 to 36848. [2022-12-13 17:15:39,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36848 states, 36847 states have (on average 1.3290905636822536) internal successors, (48973), 36847 states have internal predecessors, (48973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:40,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36848 states to 36848 states and 48973 transitions. [2022-12-13 17:15:40,046 INFO L78 Accepts]: Start accepts. Automaton has 36848 states and 48973 transitions. Word has length 66 [2022-12-13 17:15:40,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:15:40,046 INFO L495 AbstractCegarLoop]: Abstraction has 36848 states and 48973 transitions. [2022-12-13 17:15:40,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:40,046 INFO L276 IsEmpty]: Start isEmpty. Operand 36848 states and 48973 transitions. [2022-12-13 17:15:40,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 17:15:40,049 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:15:40,049 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:15:40,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 17:15:40,049 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:15:40,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:15:40,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1387170523, now seen corresponding path program 1 times [2022-12-13 17:15:40,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:15:40,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080033464] [2022-12-13 17:15:40,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:40,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:15:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:40,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:15:40,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080033464] [2022-12-13 17:15:40,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080033464] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:15:40,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103899813] [2022-12-13 17:15:40,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:40,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:15:40,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:15:40,142 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:15:40,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:15:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:40,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:15:40,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:15:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:40,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:15:40,433 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:40,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103899813] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:15:40,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:15:40,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-12-13 17:15:40,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713980970] [2022-12-13 17:15:40,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:15:40,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 17:15:40,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:15:40,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 17:15:40,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:15:40,434 INFO L87 Difference]: Start difference. First operand 36848 states and 48973 transitions. Second operand has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:49,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:15:49,063 INFO L93 Difference]: Finished difference Result 88714 states and 117863 transitions. [2022-12-13 17:15:49,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 17:15:49,064 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 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 66 [2022-12-13 17:15:49,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:15:49,140 INFO L225 Difference]: With dead ends: 88714 [2022-12-13 17:15:49,140 INFO L226 Difference]: Without dead ends: 61987 [2022-12-13 17:15:49,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-12-13 17:15:49,164 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 1628 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:15:49,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1628 Valid, 249 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 17:15:49,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61987 states. [2022-12-13 17:15:54,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61987 to 37412. [2022-12-13 17:15:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37412 states, 37411 states have (on average 1.3362647349709977) internal successors, (49991), 37411 states have internal predecessors, (49991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:54,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37412 states to 37412 states and 49991 transitions. [2022-12-13 17:15:54,433 INFO L78 Accepts]: Start accepts. Automaton has 37412 states and 49991 transitions. Word has length 66 [2022-12-13 17:15:54,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:15:54,433 INFO L495 AbstractCegarLoop]: Abstraction has 37412 states and 49991 transitions. [2022-12-13 17:15:54,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:54,434 INFO L276 IsEmpty]: Start isEmpty. Operand 37412 states and 49991 transitions. [2022-12-13 17:15:54,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 17:15:54,436 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:15:54,437 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 17:15:54,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 17:15:54,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 17:15:54,639 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:15:54,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:15:54,640 INFO L85 PathProgramCache]: Analyzing trace with hash -929496895, now seen corresponding path program 1 times [2022-12-13 17:15:54,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:15:54,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785982947] [2022-12-13 17:15:54,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:54,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:15:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:54,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:15:54,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785982947] [2022-12-13 17:15:54,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785982947] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:15:54,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880213605] [2022-12-13 17:15:54,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:54,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:15:54,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:15:54,741 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:15:54,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:15:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:54,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:15:54,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:15:54,958 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:54,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:15:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:55,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880213605] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:15:55,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:15:55,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-12-13 17:15:55,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688893478] [2022-12-13 17:15:55,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:15:55,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 17:15:55,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:15:55,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 17:15:55,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:15:55,033 INFO L87 Difference]: Start difference. First operand 37412 states and 49991 transitions. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:04,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:16:04,042 INFO L93 Difference]: Finished difference Result 84193 states and 111526 transitions. [2022-12-13 17:16:04,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 17:16:04,043 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 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 67 [2022-12-13 17:16:04,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:16:04,109 INFO L225 Difference]: With dead ends: 84193 [2022-12-13 17:16:04,109 INFO L226 Difference]: Without dead ends: 53611 [2022-12-13 17:16:04,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 124 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-12-13 17:16:04,132 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 1211 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:16:04,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 216 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:16:04,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53611 states. [2022-12-13 17:16:10,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53611 to 37842. [2022-12-13 17:16:10,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37842 states, 37841 states have (on average 1.3269998150154594) internal successors, (50215), 37841 states have internal predecessors, (50215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:10,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37842 states to 37842 states and 50215 transitions. [2022-12-13 17:16:10,096 INFO L78 Accepts]: Start accepts. Automaton has 37842 states and 50215 transitions. Word has length 67 [2022-12-13 17:16:10,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:16:10,096 INFO L495 AbstractCegarLoop]: Abstraction has 37842 states and 50215 transitions. [2022-12-13 17:16:10,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:10,096 INFO L276 IsEmpty]: Start isEmpty. Operand 37842 states and 50215 transitions. [2022-12-13 17:16:10,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 17:16:10,099 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:16:10,099 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 17:16:10,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:16:10,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 17:16:10,300 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:16:10,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:10,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2073252700, now seen corresponding path program 1 times [2022-12-13 17:16:10,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:10,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250356033] [2022-12-13 17:16:10,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:10,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:10,369 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:10,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:10,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250356033] [2022-12-13 17:16:10,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250356033] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:16:10,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406894830] [2022-12-13 17:16:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:10,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:10,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:16:10,371 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:16:10,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:16:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:10,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:16:10,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:16:10,594 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:10,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:16:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:10,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406894830] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:16:10,674 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:16:10,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-12-13 17:16:10,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554942348] [2022-12-13 17:16:10,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:16:10,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 17:16:10,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:10,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 17:16:10,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:16:10,675 INFO L87 Difference]: Start difference. First operand 37842 states and 50215 transitions. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:23,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:16:23,549 INFO L93 Difference]: Finished difference Result 91819 states and 120942 transitions. [2022-12-13 17:16:23,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 17:16:23,550 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 67 [2022-12-13 17:16:23,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:16:23,641 INFO L225 Difference]: With dead ends: 91819 [2022-12-13 17:16:23,641 INFO L226 Difference]: Without dead ends: 71231 [2022-12-13 17:16:23,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 124 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-12-13 17:16:23,664 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 1109 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:16:23,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 260 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 17:16:23,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71231 states. [2022-12-13 17:16:31,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71231 to 42998. [2022-12-13 17:16:31,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42998 states, 42997 states have (on average 1.3249761611275206) internal successors, (56970), 42997 states have internal predecessors, (56970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:31,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42998 states to 42998 states and 56970 transitions. [2022-12-13 17:16:31,318 INFO L78 Accepts]: Start accepts. Automaton has 42998 states and 56970 transitions. Word has length 67 [2022-12-13 17:16:31,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:16:31,318 INFO L495 AbstractCegarLoop]: Abstraction has 42998 states and 56970 transitions. [2022-12-13 17:16:31,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:31,318 INFO L276 IsEmpty]: Start isEmpty. Operand 42998 states and 56970 transitions. [2022-12-13 17:16:31,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 17:16:31,322 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:16:31,322 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 17:16:31,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 17:16:31,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:31,524 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:16:31,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:31,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1719826038, now seen corresponding path program 1 times [2022-12-13 17:16:31,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:31,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802608318] [2022-12-13 17:16:31,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:31,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:31,559 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:31,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:31,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802608318] [2022-12-13 17:16:31,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802608318] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:16:31,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:16:31,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:16:31,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263964136] [2022-12-13 17:16:31,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:16:31,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:16:31,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:31,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:16:31,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:16:31,561 INFO L87 Difference]: Start difference. First operand 42998 states and 56970 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:37,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:16:37,603 INFO L93 Difference]: Finished difference Result 49654 states and 65371 transitions. [2022-12-13 17:16:37,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:16:37,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-12-13 17:16:37,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:16:37,642 INFO L225 Difference]: With dead ends: 49654 [2022-12-13 17:16:37,642 INFO L226 Difference]: Without dead ends: 33592 [2022-12-13 17:16:37,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:16:37,655 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 60 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:16:37,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 264 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:16:37,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33592 states. [2022-12-13 17:16:43,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33592 to 33573. [2022-12-13 17:16:43,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33573 states, 33572 states have (on average 1.3002799952341237) internal successors, (43653), 33572 states have internal predecessors, (43653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:43,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33573 states to 33573 states and 43653 transitions. [2022-12-13 17:16:43,727 INFO L78 Accepts]: Start accepts. Automaton has 33573 states and 43653 transitions. Word has length 69 [2022-12-13 17:16:43,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:16:43,727 INFO L495 AbstractCegarLoop]: Abstraction has 33573 states and 43653 transitions. [2022-12-13 17:16:43,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:43,728 INFO L276 IsEmpty]: Start isEmpty. Operand 33573 states and 43653 transitions. [2022-12-13 17:16:43,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 17:16:43,732 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:16:43,733 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 17:16:43,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 17:16:43,733 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:16:43,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:43,733 INFO L85 PathProgramCache]: Analyzing trace with hash 379264655, now seen corresponding path program 1 times [2022-12-13 17:16:43,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:43,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117559532] [2022-12-13 17:16:43,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:43,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:43,947 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:43,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:43,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117559532] [2022-12-13 17:16:43,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117559532] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:16:43,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766249051] [2022-12-13 17:16:43,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:43,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:43,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:16:43,948 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:16:43,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:16:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:44,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 17:16:44,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:16:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:45,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:16:46,800 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:46,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766249051] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:16:46,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:16:46,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 17] total 36 [2022-12-13 17:16:46,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764299047] [2022-12-13 17:16:46,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:16:46,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-13 17:16:46,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:46,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-13 17:16:46,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1030, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 17:16:46,802 INFO L87 Difference]: Start difference. First operand 33573 states and 43653 transitions. Second operand has 36 states, 36 states have (on average 5.277777777777778) internal successors, (190), 36 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:21:19,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:21:19,141 INFO L93 Difference]: Finished difference Result 649558 states and 827884 transitions. [2022-12-13 17:21:19,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 861 states. [2022-12-13 17:21:19,142 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.277777777777778) internal successors, (190), 36 states have internal predecessors, (190), 0 states have call successors, (0), 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 69 [2022-12-13 17:21:19,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:21:20,383 INFO L225 Difference]: With dead ends: 649558 [2022-12-13 17:21:20,383 INFO L226 Difference]: Without dead ends: 615677 [2022-12-13 17:21:20,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1004 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 892 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417829 ImplicationChecksByTransitivity, 79.2s TimeCoverageRelationStatistics Valid=108543, Invalid=689799, Unknown=0, NotChecked=0, Total=798342 [2022-12-13 17:21:20,582 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 19080 mSDsluCounter, 6039 mSDsCounter, 0 mSdLazyCounter, 8161 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19080 SdHoareTripleChecker+Valid, 6446 SdHoareTripleChecker+Invalid, 8577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 8161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:21:20,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19080 Valid, 6446 Invalid, 8577 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [416 Valid, 8161 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-12-13 17:21:21,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615677 states. [2022-12-13 17:22:05,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615677 to 131101. [2022-12-13 17:22:05,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131101 states, 131100 states have (on average 1.3015484363081617) internal successors, (170633), 131100 states have internal predecessors, (170633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:22:05,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131101 states to 131101 states and 170633 transitions. [2022-12-13 17:22:05,702 INFO L78 Accepts]: Start accepts. Automaton has 131101 states and 170633 transitions. Word has length 69 [2022-12-13 17:22:05,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:22:05,702 INFO L495 AbstractCegarLoop]: Abstraction has 131101 states and 170633 transitions. [2022-12-13 17:22:05,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.277777777777778) internal successors, (190), 36 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:22:05,703 INFO L276 IsEmpty]: Start isEmpty. Operand 131101 states and 170633 transitions. [2022-12-13 17:22:05,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 17:22:05,709 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:22:05,710 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 17:22:05,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 17:22:05,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:22:05,912 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:22:05,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:22:05,913 INFO L85 PathProgramCache]: Analyzing trace with hash -2145750883, now seen corresponding path program 1 times [2022-12-13 17:22:05,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:22:05,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373690343] [2022-12-13 17:22:05,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:22:05,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:22:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:05,975 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 17:22:05,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:22:05,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373690343] [2022-12-13 17:22:05,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373690343] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:22:05,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:22:05,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:22:05,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699990115] [2022-12-13 17:22:05,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:22:05,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:22:05,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:22:05,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:22:05,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:22:05,977 INFO L87 Difference]: Start difference. First operand 131101 states and 170633 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:22:39,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:22:39,666 INFO L93 Difference]: Finished difference Result 236708 states and 308077 transitions. [2022-12-13 17:22:39,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:22:39,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 70 [2022-12-13 17:22:39,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:22:39,834 INFO L225 Difference]: With dead ends: 236708 [2022-12-13 17:22:39,834 INFO L226 Difference]: Without dead ends: 109338 [2022-12-13 17:22:39,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:22:39,906 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 71 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:22:39,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 121 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:22:39,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109338 states. [2022-12-13 17:23:12,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109338 to 108337. [2022-12-13 17:23:12,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108337 states, 108336 states have (on average 1.2802207945650568) internal successors, (138694), 108336 states have internal predecessors, (138694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:23:13,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108337 states to 108337 states and 138694 transitions. [2022-12-13 17:23:13,007 INFO L78 Accepts]: Start accepts. Automaton has 108337 states and 138694 transitions. Word has length 70 [2022-12-13 17:23:13,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:23:13,007 INFO L495 AbstractCegarLoop]: Abstraction has 108337 states and 138694 transitions. [2022-12-13 17:23:13,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:23:13,008 INFO L276 IsEmpty]: Start isEmpty. Operand 108337 states and 138694 transitions. [2022-12-13 17:23:13,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 17:23:13,012 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:23:13,013 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 17:23:13,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 17:23:13,013 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:23:13,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:23:13,013 INFO L85 PathProgramCache]: Analyzing trace with hash -303813183, now seen corresponding path program 1 times [2022-12-13 17:23:13,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:23:13,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387522102] [2022-12-13 17:23:13,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:23:13,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:23:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:13,106 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:23:13,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:23:13,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387522102] [2022-12-13 17:23:13,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387522102] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:23:13,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:23:13,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:23:13,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618341296] [2022-12-13 17:23:13,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:23:13,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:23:13,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:23:13,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:23:13,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:23:13,108 INFO L87 Difference]: Start difference. First operand 108337 states and 138694 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:23:41,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:23:41,425 INFO L93 Difference]: Finished difference Result 121804 states and 155700 transitions. [2022-12-13 17:23:41,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:23:41,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-12-13 17:23:41,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:23:41,537 INFO L225 Difference]: With dead ends: 121804 [2022-12-13 17:23:41,537 INFO L226 Difference]: Without dead ends: 92755 [2022-12-13 17:23:41,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:23:41,563 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 50 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:23:41,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 230 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:23:41,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92755 states. [2022-12-13 17:24:09,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92755 to 88602. [2022-12-13 17:24:09,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88602 states, 88601 states have (on average 1.2663626821367704) internal successors, (112201), 88601 states have internal predecessors, (112201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:24:09,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88602 states to 88602 states and 112201 transitions. [2022-12-13 17:24:09,335 INFO L78 Accepts]: Start accepts. Automaton has 88602 states and 112201 transitions. Word has length 70 [2022-12-13 17:24:09,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:24:09,335 INFO L495 AbstractCegarLoop]: Abstraction has 88602 states and 112201 transitions. [2022-12-13 17:24:09,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:24:09,336 INFO L276 IsEmpty]: Start isEmpty. Operand 88602 states and 112201 transitions. [2022-12-13 17:24:09,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 17:24:09,340 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:24:09,340 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 17:24:09,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 17:24:09,341 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:24:09,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:24:09,341 INFO L85 PathProgramCache]: Analyzing trace with hash 30251444, now seen corresponding path program 1 times [2022-12-13 17:24:09,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:24:09,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372285733] [2022-12-13 17:24:09,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:24:09,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:24:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:24:09,362 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 17:24:09,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:24:09,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372285733] [2022-12-13 17:24:09,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372285733] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:24:09,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:24:09,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:24:09,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320705114] [2022-12-13 17:24:09,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:24:09,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:24:09,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:24:09,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:24:09,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:24:09,364 INFO L87 Difference]: Start difference. First operand 88602 states and 112201 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:24:33,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:24:33,408 INFO L93 Difference]: Finished difference Result 157542 states and 200046 transitions. [2022-12-13 17:24:33,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:24:33,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 70 [2022-12-13 17:24:33,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:24:33,507 INFO L225 Difference]: With dead ends: 157542 [2022-12-13 17:24:33,507 INFO L226 Difference]: Without dead ends: 76078 [2022-12-13 17:24:33,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:24:33,545 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 78 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:24:33,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 127 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:24:33,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76078 states. [2022-12-13 17:24:57,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76078 to 76078. [2022-12-13 17:24:57,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76078 states, 76077 states have (on average 1.2496549548483773) internal successors, (95070), 76077 states have internal predecessors, (95070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:24:57,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76078 states to 76078 states and 95070 transitions. [2022-12-13 17:24:57,217 INFO L78 Accepts]: Start accepts. Automaton has 76078 states and 95070 transitions. Word has length 70 [2022-12-13 17:24:57,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:24:57,217 INFO L495 AbstractCegarLoop]: Abstraction has 76078 states and 95070 transitions. [2022-12-13 17:24:57,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:24:57,217 INFO L276 IsEmpty]: Start isEmpty. Operand 76078 states and 95070 transitions. [2022-12-13 17:24:57,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-13 17:24:57,221 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:24:57,221 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 17:24:57,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 17:24:57,222 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:24:57,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:24:57,222 INFO L85 PathProgramCache]: Analyzing trace with hash -570785947, now seen corresponding path program 1 times [2022-12-13 17:24:57,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:24:57,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015762454] [2022-12-13 17:24:57,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:24:57,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:24:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:24:57,639 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:24:57,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:24:57,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015762454] [2022-12-13 17:24:57,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015762454] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:24:57,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180993396] [2022-12-13 17:24:57,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:24:57,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:24:57,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:24:57,641 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:24:57,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da977b-22e0-44bf-95db-61106e2e416e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:24:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:24:57,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 17:24:57,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:24:58,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:24:58,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:24:59,174 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:24:59,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180993396] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:24:59,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:24:59,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 32 [2022-12-13 17:24:59,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178850498] [2022-12-13 17:24:59,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:24:59,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 17:24:59,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:24:59,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 17:24:59,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=870, Unknown=0, NotChecked=0, Total=992 [2022-12-13 17:24:59,176 INFO L87 Difference]: Start difference. First operand 76078 states and 95070 transitions. Second operand has 32 states, 32 states have (on average 5.375) internal successors, (172), 32 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:09,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:27:09,282 INFO L93 Difference]: Finished difference Result 378324 states and 469032 transitions. [2022-12-13 17:27:09,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-12-13 17:27:09,283 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.375) internal successors, (172), 32 states have internal predecessors, (172), 0 states have call successors, (0), 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 71 [2022-12-13 17:27:09,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:27:09,815 INFO L225 Difference]: With dead ends: 378324 [2022-12-13 17:27:09,816 INFO L226 Difference]: Without dead ends: 327135 [2022-12-13 17:27:09,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1749 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1802, Invalid=5508, Unknown=0, NotChecked=0, Total=7310 [2022-12-13 17:27:09,902 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 4682 mSDsluCounter, 3241 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4682 SdHoareTripleChecker+Valid, 3497 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:27:09,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4682 Valid, 3497 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 17:27:10,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327135 states.