./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d147776-915a-4de6-b583-e05d32cba99b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d147776-915a-4de6-b583-e05d32cba99b/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_5d147776-915a-4de6-b583-e05d32cba99b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d147776-915a-4de6-b583-e05d32cba99b/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d147776-915a-4de6-b583-e05d32cba99b/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_5d147776-915a-4de6-b583-e05d32cba99b/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 169d16a82e2efb21b41720aab8fadcf5ecf67324651e69e91d6cb4f921e3dcd4 --- 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 13:27:20,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:27:20,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:27:20,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:27:20,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:27:20,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:27:20,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:27:20,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:27:20,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:27:20,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:27:20,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:27:20,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:27:20,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:27:20,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:27:20,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:27:20,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:27:20,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:27:20,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:27:20,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:27:20,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:27:20,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:27:20,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:27:20,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:27:20,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:27:20,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:27:20,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:27:20,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:27:20,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:27:20,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:27:20,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:27:20,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:27:20,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:27:20,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:27:20,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:27:20,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:27:20,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:27:20,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:27:20,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:27:20,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:27:20,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:27:20,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:27:20,565 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d147776-915a-4de6-b583-e05d32cba99b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 13:27:20,579 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:27:20,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:27:20,579 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:27:20,579 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:27:20,580 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:27:20,580 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:27:20,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:27:20,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:27:20,581 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:27:20,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:27:20,586 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:27:20,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:27:20,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:27:20,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:27:20,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:27:20,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:27:20,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:27:20,587 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:27:20,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:27:20,587 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:27:20,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:27:20,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:27:20,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:27:20,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:27:20,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:27:20,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:27:20,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:27:20,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:27:20,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:27:20,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:27:20,589 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:27:20,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:27:20,590 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:27:20,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:27:20,590 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:27:20,590 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_5d147776-915a-4de6-b583-e05d32cba99b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d147776-915a-4de6-b583-e05d32cba99b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 169d16a82e2efb21b41720aab8fadcf5ecf67324651e69e91d6cb4f921e3dcd4 [2022-12-13 13:27:20,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:27:20,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:27:20,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:27:20,775 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:27:20,775 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:27:20,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d147776-915a-4de6-b583-e05d32cba99b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2022-12-13 13:27:23,382 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:27:23,578 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:27:23,579 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d147776-915a-4de6-b583-e05d32cba99b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2022-12-13 13:27:23,587 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d147776-915a-4de6-b583-e05d32cba99b/bin/uautomizer-uyxdKDjOR8/data/1ff10b340/63cd381bd0a74d0ca5523819c1eeeb62/FLAG9aa691a4b [2022-12-13 13:27:23,597 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d147776-915a-4de6-b583-e05d32cba99b/bin/uautomizer-uyxdKDjOR8/data/1ff10b340/63cd381bd0a74d0ca5523819c1eeeb62 [2022-12-13 13:27:23,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:27:23,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:27:23,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:27:23,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:27:23,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:27:23,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:27:23" (1/1) ... [2022-12-13 13:27:23,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f6b9143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:27:23, skipping insertion in model container [2022-12-13 13:27:23,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:27:23" (1/1) ... [2022-12-13 13:27:23,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:27:23,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:27:23,840 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_5d147776-915a-4de6-b583-e05d32cba99b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[13215,13228] [2022-12-13 13:27:23,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:27:23,909 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:27:23,962 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_5d147776-915a-4de6-b583-e05d32cba99b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[13215,13228] [2022-12-13 13:27:24,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:27:24,014 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:27:24,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:27:24 WrapperNode [2022-12-13 13:27:24,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:27:24,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:27:24,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:27:24,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:27:24,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:27:24" (1/1) ... [2022-12-13 13:27:24,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:27:24" (1/1) ... [2022-12-13 13:27:24,067 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1333 [2022-12-13 13:27:24,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:27:24,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:27:24,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:27:24,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:27:24,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:27:24" (1/1) ... [2022-12-13 13:27:24,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:27:24" (1/1) ... [2022-12-13 13:27:24,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:27:24" (1/1) ... [2022-12-13 13:27:24,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:27:24" (1/1) ... [2022-12-13 13:27:24,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:27:24" (1/1) ... [2022-12-13 13:27:24,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:27:24" (1/1) ... [2022-12-13 13:27:24,094 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:27:24" (1/1) ... [2022-12-13 13:27:24,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:27:24" (1/1) ... [2022-12-13 13:27:24,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:27:24,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:27:24,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:27:24,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:27:24,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:27:24" (1/1) ... [2022-12-13 13:27:24,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:27:24,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d147776-915a-4de6-b583-e05d32cba99b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:27:24,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d147776-915a-4de6-b583-e05d32cba99b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:27:24,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d147776-915a-4de6-b583-e05d32cba99b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:27:24,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:27:24,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:27:24,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:27:24,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:27:24,293 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:27:24,295 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:27:25,028 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:27:25,039 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:27:25,039 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 13:27:25,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:27:25 BoogieIcfgContainer [2022-12-13 13:27:25,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:27:25,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:27:25,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:27:25,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:27:25,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:27:23" (1/3) ... [2022-12-13 13:27:25,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1392220d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:27:25, skipping insertion in model container [2022-12-13 13:27:25,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:27:24" (2/3) ... [2022-12-13 13:27:25,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1392220d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:27:25, skipping insertion in model container [2022-12-13 13:27:25,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:27:25" (3/3) ... [2022-12-13 13:27:25,050 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2022-12-13 13:27:25,067 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:27:25,067 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:27:25,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:27:25,128 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;@4566d36f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:27:25,128 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 13:27:25,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 436 states, 404 states have (on average 1.6485148514851484) internal successors, (666), 435 states have internal predecessors, (666), 0 states have call successors, (0), 0 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 13:27:25,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 13:27:25,147 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:27:25,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:27:25,148 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:27:25,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:27:25,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1653668950, now seen corresponding path program 1 times [2022-12-13 13:27:25,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:27:25,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874679630] [2022-12-13 13:27:25,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:27:25,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:27:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:27:25,438 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 13:27:25,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:27:25,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874679630] [2022-12-13 13:27:25,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874679630] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:27:25,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:27:25,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:27:25,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877394073] [2022-12-13 13:27:25,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:27:25,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:27:25,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:27:25,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:27:25,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:27:25,476 INFO L87 Difference]: Start difference. First operand has 436 states, 404 states have (on average 1.6485148514851484) internal successors, (666), 435 states have internal predecessors, (666), 0 states have call successors, (0), 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 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:25,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:27:25,621 INFO L93 Difference]: Finished difference Result 814 states and 1270 transitions. [2022-12-13 13:27:25,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:27:25,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-12-13 13:27:25,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:27:25,635 INFO L225 Difference]: With dead ends: 814 [2022-12-13 13:27:25,635 INFO L226 Difference]: Without dead ends: 403 [2022-12-13 13:27:25,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:27:25,642 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 155 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:27:25,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 1791 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:27:25,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-12-13 13:27:25,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2022-12-13 13:27:25,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.5497512437810945) internal successors, (623), 402 states have internal predecessors, (623), 0 states have call successors, (0), 0 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 13:27:25,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 623 transitions. [2022-12-13 13:27:25,689 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 623 transitions. Word has length 103 [2022-12-13 13:27:25,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:27:25,689 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 623 transitions. [2022-12-13 13:27:25,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:25,689 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 623 transitions. [2022-12-13 13:27:25,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 13:27:25,692 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:27:25,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:27:25,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:27:25,692 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:27:25,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:27:25,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1984435279, now seen corresponding path program 1 times [2022-12-13 13:27:25,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:27:25,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350673099] [2022-12-13 13:27:25,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:27:25,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:27:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:27:25,801 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 13:27:25,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:27:25,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350673099] [2022-12-13 13:27:25,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350673099] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:27:25,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:27:25,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:27:25,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751290832] [2022-12-13 13:27:25,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:27:25,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:27:25,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:27:25,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:27:25,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:27:25,805 INFO L87 Difference]: Start difference. First operand 403 states and 623 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:25,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:27:25,875 INFO L93 Difference]: Finished difference Result 952 states and 1499 transitions. [2022-12-13 13:27:25,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:27:25,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-12-13 13:27:25,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:27:25,879 INFO L225 Difference]: With dead ends: 952 [2022-12-13 13:27:25,879 INFO L226 Difference]: Without dead ends: 611 [2022-12-13 13:27:25,880 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 13:27:25,882 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 419 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:27:25,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1096 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:27:25,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-12-13 13:27:25,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 609. [2022-12-13 13:27:25,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 608 states have (on average 1.5608552631578947) internal successors, (949), 608 states have internal predecessors, (949), 0 states have call successors, (0), 0 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 13:27:25,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 949 transitions. [2022-12-13 13:27:25,924 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 949 transitions. Word has length 134 [2022-12-13 13:27:25,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:27:25,924 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 949 transitions. [2022-12-13 13:27:25,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:25,925 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 949 transitions. [2022-12-13 13:27:25,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-12-13 13:27:25,928 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:27:25,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:27:25,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:27:25,929 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:27:25,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:27:25,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1203481045, now seen corresponding path program 1 times [2022-12-13 13:27:25,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:27:25,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550540158] [2022-12-13 13:27:25,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:27:25,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:27:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:27:26,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:27:26,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:27:26,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550540158] [2022-12-13 13:27:26,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550540158] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:27:26,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:27:26,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:27:26,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482278005] [2022-12-13 13:27:26,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:27:26,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:27:26,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:27:26,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:27:26,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:27:26,046 INFO L87 Difference]: Start difference. First operand 609 states and 949 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:26,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:27:26,143 INFO L93 Difference]: Finished difference Result 1494 states and 2358 transitions. [2022-12-13 13:27:26,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:27:26,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2022-12-13 13:27:26,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:27:26,148 INFO L225 Difference]: With dead ends: 1494 [2022-12-13 13:27:26,149 INFO L226 Difference]: Without dead ends: 960 [2022-12-13 13:27:26,150 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 13:27:26,151 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 403 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:27:26,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 1181 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:27:26,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-12-13 13:27:26,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 958. [2022-12-13 13:27:26,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 1.5663531870428422) internal successors, (1499), 957 states have internal predecessors, (1499), 0 states have call successors, (0), 0 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 13:27:26,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1499 transitions. [2022-12-13 13:27:26,219 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1499 transitions. Word has length 136 [2022-12-13 13:27:26,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:27:26,219 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1499 transitions. [2022-12-13 13:27:26,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:26,220 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1499 transitions. [2022-12-13 13:27:26,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-13 13:27:26,223 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:27:26,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:27:26,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:27:26,223 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:27:26,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:27:26,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1755736889, now seen corresponding path program 1 times [2022-12-13 13:27:26,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:27:26,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236067802] [2022-12-13 13:27:26,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:27:26,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:27:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:27:26,331 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 13:27:26,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:27:26,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236067802] [2022-12-13 13:27:26,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236067802] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:27:26,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:27:26,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:27:26,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527047763] [2022-12-13 13:27:26,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:27:26,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:27:26,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:27:26,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:27:26,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:27:26,333 INFO L87 Difference]: Start difference. First operand 958 states and 1499 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:26,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:27:26,454 INFO L93 Difference]: Finished difference Result 2397 states and 3779 transitions. [2022-12-13 13:27:26,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:27:26,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-12-13 13:27:26,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:27:26,458 INFO L225 Difference]: With dead ends: 2397 [2022-12-13 13:27:26,459 INFO L226 Difference]: Without dead ends: 1527 [2022-12-13 13:27:26,460 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 13:27:26,460 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 389 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:27:26,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 1026 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:27:26,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2022-12-13 13:27:26,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1525. [2022-12-13 13:27:26,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 1.56496062992126) internal successors, (2385), 1524 states have internal predecessors, (2385), 0 states have call successors, (0), 0 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 13:27:26,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2385 transitions. [2022-12-13 13:27:26,539 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2385 transitions. Word has length 138 [2022-12-13 13:27:26,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:27:26,539 INFO L495 AbstractCegarLoop]: Abstraction has 1525 states and 2385 transitions. [2022-12-13 13:27:26,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:26,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2385 transitions. [2022-12-13 13:27:26,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-13 13:27:26,542 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:27:26,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:27:26,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:27:26,542 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:27:26,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:27:26,542 INFO L85 PathProgramCache]: Analyzing trace with hash -175339215, now seen corresponding path program 1 times [2022-12-13 13:27:26,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:27:26,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997386331] [2022-12-13 13:27:26,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:27:26,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:27:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:27:26,600 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 13:27:26,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:27:26,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997386331] [2022-12-13 13:27:26,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997386331] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:27:26,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:27:26,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:27:26,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799122453] [2022-12-13 13:27:26,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:27:26,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:27:26,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:27:26,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:27:26,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:27:26,601 INFO L87 Difference]: Start difference. First operand 1525 states and 2385 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:26,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:27:26,748 INFO L93 Difference]: Finished difference Result 3818 states and 5988 transitions. [2022-12-13 13:27:26,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:27:26,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-13 13:27:26,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:27:26,754 INFO L225 Difference]: With dead ends: 3818 [2022-12-13 13:27:26,755 INFO L226 Difference]: Without dead ends: 2394 [2022-12-13 13:27:26,757 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 13:27:26,757 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 374 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:27:26,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 991 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:27:26,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2394 states. [2022-12-13 13:27:26,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2394 to 2392. [2022-12-13 13:27:26,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2392 states, 2391 states have (on average 1.5554161438728566) internal successors, (3719), 2391 states have internal predecessors, (3719), 0 states have call successors, (0), 0 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 13:27:26,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2392 states to 2392 states and 3719 transitions. [2022-12-13 13:27:26,930 INFO L78 Accepts]: Start accepts. Automaton has 2392 states and 3719 transitions. Word has length 140 [2022-12-13 13:27:26,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:27:26,930 INFO L495 AbstractCegarLoop]: Abstraction has 2392 states and 3719 transitions. [2022-12-13 13:27:26,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:26,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2392 states and 3719 transitions. [2022-12-13 13:27:26,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-12-13 13:27:26,934 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:27:26,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:27:26,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:27:26,935 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:27:26,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:27:26,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1755218565, now seen corresponding path program 1 times [2022-12-13 13:27:26,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:27:26,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168081723] [2022-12-13 13:27:26,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:27:26,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:27:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:27:27,064 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 13:27:27,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:27:27,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168081723] [2022-12-13 13:27:27,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168081723] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:27:27,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:27:27,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:27:27,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369311632] [2022-12-13 13:27:27,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:27:27,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:27:27,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:27:27,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:27:27,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:27:27,066 INFO L87 Difference]: Start difference. First operand 2392 states and 3719 transitions. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:28,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:27:28,035 INFO L93 Difference]: Finished difference Result 14072 states and 21897 transitions. [2022-12-13 13:27:28,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:27:28,036 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-12-13 13:27:28,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:27:28,064 INFO L225 Difference]: With dead ends: 14072 [2022-12-13 13:27:28,064 INFO L226 Difference]: Without dead ends: 11785 [2022-12-13 13:27:28,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-12-13 13:27:28,069 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 4316 mSDsluCounter, 5388 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4316 SdHoareTripleChecker+Valid, 5983 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:27:28,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4316 Valid, 5983 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:27:28,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11785 states. [2022-12-13 13:27:28,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11785 to 4734. [2022-12-13 13:27:28,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4734 states, 4733 states have (on average 1.5387703359391507) internal successors, (7283), 4733 states have internal predecessors, (7283), 0 states have call successors, (0), 0 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 13:27:28,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4734 states to 4734 states and 7283 transitions. [2022-12-13 13:27:28,518 INFO L78 Accepts]: Start accepts. Automaton has 4734 states and 7283 transitions. Word has length 142 [2022-12-13 13:27:28,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:27:28,518 INFO L495 AbstractCegarLoop]: Abstraction has 4734 states and 7283 transitions. [2022-12-13 13:27:28,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:28,518 INFO L276 IsEmpty]: Start isEmpty. Operand 4734 states and 7283 transitions. [2022-12-13 13:27:28,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 13:27:28,525 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:27:28,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:27:28,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 13:27:28,525 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:27:28,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:27:28,526 INFO L85 PathProgramCache]: Analyzing trace with hash -709986120, now seen corresponding path program 1 times [2022-12-13 13:27:28,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:27:28,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8799565] [2022-12-13 13:27:28,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:27:28,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:27:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:27:28,574 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 13:27:28,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:27:28,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8799565] [2022-12-13 13:27:28,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8799565] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:27:28,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:27:28,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:27:28,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421109526] [2022-12-13 13:27:28,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:27:28,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:27:28,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:27:28,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:27:28,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:27:28,577 INFO L87 Difference]: Start difference. First operand 4734 states and 7283 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 13:27:29,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:27:29,232 INFO L93 Difference]: Finished difference Result 13106 states and 20134 transitions. [2022-12-13 13:27:29,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:27:29,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2022-12-13 13:27:29,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:27:29,253 INFO L225 Difference]: With dead ends: 13106 [2022-12-13 13:27:29,253 INFO L226 Difference]: Without dead ends: 8416 [2022-12-13 13:27:29,258 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 13:27:29,259 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 413 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:27:29,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1443 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:27:29,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8416 states. [2022-12-13 13:27:29,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8416 to 8414. [2022-12-13 13:27:29,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8414 states, 8413 states have (on average 1.5253773921312255) internal successors, (12833), 8413 states have internal predecessors, (12833), 0 states have call successors, (0), 0 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 13:27:29,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8414 states to 8414 states and 12833 transitions. [2022-12-13 13:27:29,866 INFO L78 Accepts]: Start accepts. Automaton has 8414 states and 12833 transitions. Word has length 145 [2022-12-13 13:27:29,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:27:29,866 INFO L495 AbstractCegarLoop]: Abstraction has 8414 states and 12833 transitions. [2022-12-13 13:27:29,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 13:27:29,866 INFO L276 IsEmpty]: Start isEmpty. Operand 8414 states and 12833 transitions. [2022-12-13 13:27:29,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 13:27:29,877 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:27:29,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:27:29,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 13:27:29,877 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:27:29,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:27:29,878 INFO L85 PathProgramCache]: Analyzing trace with hash -380882047, now seen corresponding path program 1 times [2022-12-13 13:27:29,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:27:29,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331152604] [2022-12-13 13:27:29,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:27:29,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:27:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:27:29,933 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 13:27:29,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:27:29,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331152604] [2022-12-13 13:27:29,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331152604] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:27:29,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:27:29,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:27:29,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458831904] [2022-12-13 13:27:29,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:27:29,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:27:29,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:27:29,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:27:29,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:27:29,934 INFO L87 Difference]: Start difference. First operand 8414 states and 12833 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 13:27:31,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:27:31,151 INFO L93 Difference]: Finished difference Result 24239 states and 36920 transitions. [2022-12-13 13:27:31,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:27:31,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-12-13 13:27:31,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:27:31,176 INFO L225 Difference]: With dead ends: 24239 [2022-12-13 13:27:31,176 INFO L226 Difference]: Without dead ends: 15971 [2022-12-13 13:27:31,183 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 13:27:31,184 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 449 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:27:31,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1087 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:27:31,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15971 states. [2022-12-13 13:27:32,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15971 to 15969. [2022-12-13 13:27:32,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15969 states, 15968 states have (on average 1.5127129258517034) internal successors, (24155), 15968 states have internal predecessors, (24155), 0 states have call successors, (0), 0 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 13:27:32,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15969 states to 15969 states and 24155 transitions. [2022-12-13 13:27:32,301 INFO L78 Accepts]: Start accepts. Automaton has 15969 states and 24155 transitions. Word has length 146 [2022-12-13 13:27:32,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:27:32,301 INFO L495 AbstractCegarLoop]: Abstraction has 15969 states and 24155 transitions. [2022-12-13 13:27:32,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 13:27:32,301 INFO L276 IsEmpty]: Start isEmpty. Operand 15969 states and 24155 transitions. [2022-12-13 13:27:32,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 13:27:32,322 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:27:32,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:27:32,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 13:27:32,323 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:27:32,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:27:32,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1424530646, now seen corresponding path program 1 times [2022-12-13 13:27:32,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:27:32,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561421131] [2022-12-13 13:27:32,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:27:32,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:27:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:27:32,418 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 13:27:32,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:27:32,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561421131] [2022-12-13 13:27:32,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561421131] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:27:32,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:27:32,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:27:32,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303988569] [2022-12-13 13:27:32,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:27:32,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:27:32,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:27:32,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:27:32,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:27:32,421 INFO L87 Difference]: Start difference. First operand 15969 states and 24155 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 13:27:34,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:27:34,506 INFO L93 Difference]: Finished difference Result 45751 states and 69018 transitions. [2022-12-13 13:27:34,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:27:34,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-12-13 13:27:34,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:27:34,559 INFO L225 Difference]: With dead ends: 45751 [2022-12-13 13:27:34,559 INFO L226 Difference]: Without dead ends: 30164 [2022-12-13 13:27:34,576 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 13:27:34,576 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 431 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:27:34,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1087 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:27:34,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30164 states. [2022-12-13 13:27:36,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30164 to 30162. [2022-12-13 13:27:36,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30162 states, 30161 states have (on average 1.497132057955638) internal successors, (45155), 30161 states have internal predecessors, (45155), 0 states have call successors, (0), 0 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 13:27:36,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30162 states to 30162 states and 45155 transitions. [2022-12-13 13:27:36,970 INFO L78 Accepts]: Start accepts. Automaton has 30162 states and 45155 transitions. Word has length 146 [2022-12-13 13:27:36,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:27:36,970 INFO L495 AbstractCegarLoop]: Abstraction has 30162 states and 45155 transitions. [2022-12-13 13:27:36,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 13:27:36,971 INFO L276 IsEmpty]: Start isEmpty. Operand 30162 states and 45155 transitions. [2022-12-13 13:27:37,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 13:27:37,002 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:27:37,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:27:37,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 13:27:37,002 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:27:37,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:27:37,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1146158271, now seen corresponding path program 1 times [2022-12-13 13:27:37,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:27:37,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15707211] [2022-12-13 13:27:37,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:27:37,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:27:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:27:37,055 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 13:27:37,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:27:37,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15707211] [2022-12-13 13:27:37,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15707211] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:27:37,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:27:37,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:27:37,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616332369] [2022-12-13 13:27:37,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:27:37,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:27:37,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:27:37,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:27:37,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:27:37,056 INFO L87 Difference]: Start difference. First operand 30162 states and 45155 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 13:27:41,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:27:41,305 INFO L93 Difference]: Finished difference Result 85361 states and 127210 transitions. [2022-12-13 13:27:41,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:27:41,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-12-13 13:27:41,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:27:41,376 INFO L225 Difference]: With dead ends: 85361 [2022-12-13 13:27:41,376 INFO L226 Difference]: Without dead ends: 56499 [2022-12-13 13:27:41,401 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 13:27:41,402 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 413 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:27:41,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1087 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:27:41,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56499 states. [2022-12-13 13:27:45,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56499 to 56497. [2022-12-13 13:27:45,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56497 states, 56496 states have (on average 1.4774320305862363) internal successors, (83469), 56496 states have internal predecessors, (83469), 0 states have call successors, (0), 0 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 13:27:46,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56497 states to 56497 states and 83469 transitions. [2022-12-13 13:27:46,068 INFO L78 Accepts]: Start accepts. Automaton has 56497 states and 83469 transitions. Word has length 146 [2022-12-13 13:27:46,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:27:46,068 INFO L495 AbstractCegarLoop]: Abstraction has 56497 states and 83469 transitions. [2022-12-13 13:27:46,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 13:27:46,068 INFO L276 IsEmpty]: Start isEmpty. Operand 56497 states and 83469 transitions. [2022-12-13 13:27:46,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 13:27:46,126 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:27:46,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:27:46,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 13:27:46,127 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:27:46,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:27:46,127 INFO L85 PathProgramCache]: Analyzing trace with hash -405922622, now seen corresponding path program 1 times [2022-12-13 13:27:46,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:27:46,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488997791] [2022-12-13 13:27:46,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:27:46,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:27:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:27:46,176 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 13:27:46,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:27:46,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488997791] [2022-12-13 13:27:46,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488997791] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:27:46,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:27:46,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:27:46,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592432396] [2022-12-13 13:27:46,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:27:46,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:27:46,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:27:46,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:27:46,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:27:46,178 INFO L87 Difference]: Start difference. First operand 56497 states and 83469 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 13:27:54,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:27:54,100 INFO L93 Difference]: Finished difference Result 155711 states and 228154 transitions. [2022-12-13 13:27:54,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:27:54,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-12-13 13:27:54,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:27:54,235 INFO L225 Difference]: With dead ends: 155711 [2022-12-13 13:27:54,235 INFO L226 Difference]: Without dead ends: 104254 [2022-12-13 13:27:54,271 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 13:27:54,271 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 395 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:27:54,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 1087 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:27:54,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104254 states. [2022-12-13 13:28:02,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104254 to 104252. [2022-12-13 13:28:02,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104252 states, 104251 states have (on average 1.4505280524887052) internal successors, (151219), 104251 states have internal predecessors, (151219), 0 states have call successors, (0), 0 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 13:28:02,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104252 states to 104252 states and 151219 transitions. [2022-12-13 13:28:02,647 INFO L78 Accepts]: Start accepts. Automaton has 104252 states and 151219 transitions. Word has length 146 [2022-12-13 13:28:02,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:28:02,647 INFO L495 AbstractCegarLoop]: Abstraction has 104252 states and 151219 transitions. [2022-12-13 13:28:02,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 13:28:02,647 INFO L276 IsEmpty]: Start isEmpty. Operand 104252 states and 151219 transitions. [2022-12-13 13:28:02,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 13:28:02,859 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:28:02,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:28:02,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 13:28:02,859 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:28:02,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:02,860 INFO L85 PathProgramCache]: Analyzing trace with hash 541145625, now seen corresponding path program 1 times [2022-12-13 13:28:02,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:02,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886055236] [2022-12-13 13:28:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:02,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:03,038 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 13:28:03,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:03,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886055236] [2022-12-13 13:28:03,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886055236] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:03,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:03,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:28:03,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341928019] [2022-12-13 13:28:03,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:03,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:28:03,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:03,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:28:03,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:28:03,040 INFO L87 Difference]: Start difference. First operand 104252 states and 151219 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 13:28:15,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:28:15,712 INFO L93 Difference]: Finished difference Result 178977 states and 256727 transitions. [2022-12-13 13:28:15,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:28:15,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-12-13 13:28:15,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:28:15,861 INFO L225 Difference]: With dead ends: 178977 [2022-12-13 13:28:15,861 INFO L226 Difference]: Without dead ends: 114413 [2022-12-13 13:28:15,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:28:15,904 INFO L413 NwaCegarLoop]: 1203 mSDtfsCounter, 2041 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2041 SdHoareTripleChecker+Valid, 2969 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 13:28:15,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2041 Valid, 2969 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 13:28:15,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114413 states. [2022-12-13 13:28:26,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114413 to 110118. [2022-12-13 13:28:26,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110118 states, 110117 states have (on average 1.4261921410862992) internal successors, (157048), 110117 states have internal predecessors, (157048), 0 states have call successors, (0), 0 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 13:28:26,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110118 states to 110118 states and 157048 transitions. [2022-12-13 13:28:26,526 INFO L78 Accepts]: Start accepts. Automaton has 110118 states and 157048 transitions. Word has length 146 [2022-12-13 13:28:26,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:28:26,527 INFO L495 AbstractCegarLoop]: Abstraction has 110118 states and 157048 transitions. [2022-12-13 13:28:26,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 13:28:26,527 INFO L276 IsEmpty]: Start isEmpty. Operand 110118 states and 157048 transitions. [2022-12-13 13:28:26,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-12-13 13:28:26,648 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:28:26,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:28:26,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 13:28:26,649 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:28:26,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:26,649 INFO L85 PathProgramCache]: Analyzing trace with hash 373279712, now seen corresponding path program 1 times [2022-12-13 13:28:26,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:26,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245666761] [2022-12-13 13:28:26,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:26,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:26,796 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 13:28:26,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:26,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245666761] [2022-12-13 13:28:26,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245666761] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:26,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:26,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:28:26,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523390089] [2022-12-13 13:28:26,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:26,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:28:26,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:26,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:28:26,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:28:26,798 INFO L87 Difference]: Start difference. First operand 110118 states and 157048 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 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 13:28:49,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:28:49,485 INFO L93 Difference]: Finished difference Result 255628 states and 368381 transitions. [2022-12-13 13:28:49,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:28:49,486 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2022-12-13 13:28:49,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:28:49,820 INFO L225 Difference]: With dead ends: 255628 [2022-12-13 13:28:49,820 INFO L226 Difference]: Without dead ends: 223263 [2022-12-13 13:28:49,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 13:28:49,868 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 3520 mSDsluCounter, 3710 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3520 SdHoareTripleChecker+Valid, 4643 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:28:49,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3520 Valid, 4643 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:28:50,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223263 states. [2022-12-13 13:29:07,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223263 to 147123. [2022-12-13 13:29:07,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147123 states, 147122 states have (on average 1.425857451638776) internal successors, (209775), 147122 states have internal predecessors, (209775), 0 states have call successors, (0), 0 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 13:29:07,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147123 states to 147123 states and 209775 transitions. [2022-12-13 13:29:07,784 INFO L78 Accepts]: Start accepts. Automaton has 147123 states and 209775 transitions. Word has length 149 [2022-12-13 13:29:07,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:29:07,784 INFO L495 AbstractCegarLoop]: Abstraction has 147123 states and 209775 transitions. [2022-12-13 13:29:07,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 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 13:29:07,785 INFO L276 IsEmpty]: Start isEmpty. Operand 147123 states and 209775 transitions. [2022-12-13 13:29:07,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-12-13 13:29:07,939 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:29:07,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:29:07,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 13:29:07,939 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:29:07,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:07,940 INFO L85 PathProgramCache]: Analyzing trace with hash 226295320, now seen corresponding path program 1 times [2022-12-13 13:29:07,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:07,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029920085] [2022-12-13 13:29:07,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:07,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:07,998 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 13:29:07,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:07,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029920085] [2022-12-13 13:29:07,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029920085] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:29:07,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:29:07,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:29:07,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366313056] [2022-12-13 13:29:07,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:29:07,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:29:07,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:07,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:29:07,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:29:07,999 INFO L87 Difference]: Start difference. First operand 147123 states and 209775 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 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 13:29:23,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:29:23,100 INFO L93 Difference]: Finished difference Result 195136 states and 277778 transitions. [2022-12-13 13:29:23,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:29:23,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2022-12-13 13:29:23,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:29:23,283 INFO L225 Difference]: With dead ends: 195136 [2022-12-13 13:29:23,283 INFO L226 Difference]: Without dead ends: 132421 [2022-12-13 13:29:23,324 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 13:29:23,324 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 426 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:29:23,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 1395 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:29:23,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132421 states. [2022-12-13 13:29:38,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132421 to 132339. [2022-12-13 13:29:38,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132339 states, 132338 states have (on average 1.4151339751243028) internal successors, (187276), 132338 states have internal predecessors, (187276), 0 states have call successors, (0), 0 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 13:29:39,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132339 states to 132339 states and 187276 transitions. [2022-12-13 13:29:39,106 INFO L78 Accepts]: Start accepts. Automaton has 132339 states and 187276 transitions. Word has length 149 [2022-12-13 13:29:39,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:29:39,107 INFO L495 AbstractCegarLoop]: Abstraction has 132339 states and 187276 transitions. [2022-12-13 13:29:39,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 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 13:29:39,107 INFO L276 IsEmpty]: Start isEmpty. Operand 132339 states and 187276 transitions. [2022-12-13 13:29:39,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-12-13 13:29:39,250 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:29:39,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:29:39,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 13:29:39,250 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:29:39,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:39,251 INFO L85 PathProgramCache]: Analyzing trace with hash -658471719, now seen corresponding path program 1 times [2022-12-13 13:29:39,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:39,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378937641] [2022-12-13 13:29:39,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:39,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:39,442 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 13:29:39,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:39,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378937641] [2022-12-13 13:29:39,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378937641] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:29:39,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:29:39,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:29:39,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562324893] [2022-12-13 13:29:39,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:29:39,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:29:39,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:39,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:29:39,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:29:39,443 INFO L87 Difference]: Start difference. First operand 132339 states and 187276 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 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 13:30:06,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:30:06,772 INFO L93 Difference]: Finished difference Result 255764 states and 365373 transitions. [2022-12-13 13:30:06,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:30:06,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2022-12-13 13:30:06,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:30:07,115 INFO L225 Difference]: With dead ends: 255764 [2022-12-13 13:30:07,116 INFO L226 Difference]: Without dead ends: 226679 [2022-12-13 13:30:07,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 13:30:07,170 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 3737 mSDsluCounter, 3296 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3737 SdHoareTripleChecker+Valid, 4200 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:30:07,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3737 Valid, 4200 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:30:07,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226679 states. [2022-12-13 13:30:29,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226679 to 164699. [2022-12-13 13:30:29,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164699 states, 164698 states have (on average 1.4154573826033103) internal successors, (233123), 164698 states have internal predecessors, (233123), 0 states have call successors, (0), 0 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 13:30:29,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164699 states to 164699 states and 233123 transitions. [2022-12-13 13:30:29,957 INFO L78 Accepts]: Start accepts. Automaton has 164699 states and 233123 transitions. Word has length 149 [2022-12-13 13:30:29,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:30:29,957 INFO L495 AbstractCegarLoop]: Abstraction has 164699 states and 233123 transitions. [2022-12-13 13:30:29,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 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 13:30:29,958 INFO L276 IsEmpty]: Start isEmpty. Operand 164699 states and 233123 transitions. [2022-12-13 13:30:30,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-12-13 13:30:30,115 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:30:30,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:30:30,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 13:30:30,115 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:30:30,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:30:30,116 INFO L85 PathProgramCache]: Analyzing trace with hash -938674746, now seen corresponding path program 1 times [2022-12-13 13:30:30,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:30:30,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461143188] [2022-12-13 13:30:30,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:30:30,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:30:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:30:30,170 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 13:30:30,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:30:30,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461143188] [2022-12-13 13:30:30,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461143188] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:30:30,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:30:30,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:30:30,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709808216] [2022-12-13 13:30:30,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:30:30,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:30:30,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:30:30,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:30:30,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:30:30,172 INFO L87 Difference]: Start difference. First operand 164699 states and 233123 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 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 13:30:49,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:30:49,681 INFO L93 Difference]: Finished difference Result 212315 states and 300175 transitions. [2022-12-13 13:30:49,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:30:49,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2022-12-13 13:30:49,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:30:49,884 INFO L225 Difference]: With dead ends: 212315 [2022-12-13 13:30:49,884 INFO L226 Difference]: Without dead ends: 151544 [2022-12-13 13:30:49,934 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 13:30:49,934 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 407 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:30:49,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 1476 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:30:50,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151544 states. [2022-12-13 13:31:10,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151544 to 151497. [2022-12-13 13:31:10,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151497 states, 151496 states have (on average 1.4052318213022126) internal successors, (212887), 151496 states have internal predecessors, (212887), 0 states have call successors, (0), 0 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 13:31:10,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151497 states to 151497 states and 212887 transitions. [2022-12-13 13:31:10,755 INFO L78 Accepts]: Start accepts. Automaton has 151497 states and 212887 transitions. Word has length 149 [2022-12-13 13:31:10,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:31:10,756 INFO L495 AbstractCegarLoop]: Abstraction has 151497 states and 212887 transitions. [2022-12-13 13:31:10,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 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 13:31:10,756 INFO L276 IsEmpty]: Start isEmpty. Operand 151497 states and 212887 transitions. [2022-12-13 13:31:10,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-12-13 13:31:10,916 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:31:10,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:31:10,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 13:31:10,917 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:31:10,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:31:10,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1003898028, now seen corresponding path program 1 times [2022-12-13 13:31:10,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:31:10,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255461940] [2022-12-13 13:31:10,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:31:10,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:31:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:31:10,961 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 13:31:10,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:31:10,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255461940] [2022-12-13 13:31:10,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255461940] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:31:10,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:31:10,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:31:10,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549169153] [2022-12-13 13:31:10,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:31:10,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:31:10,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:31:10,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:31:10,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:31:10,962 INFO L87 Difference]: Start difference. First operand 151497 states and 212887 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 13:31:47,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:31:47,958 INFO L93 Difference]: Finished difference Result 409370 states and 573545 transitions. [2022-12-13 13:31:47,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:31:47,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2022-12-13 13:31:47,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:31:48,368 INFO L225 Difference]: With dead ends: 409370 [2022-12-13 13:31:48,368 INFO L226 Difference]: Without dead ends: 268319 [2022-12-13 13:31:48,491 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 13:31:48,492 INFO L413 NwaCegarLoop]: 1053 mSDtfsCounter, 488 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:31:48,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1571 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:31:48,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268319 states. [2022-12-13 13:32:27,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268319 to 268272. [2022-12-13 13:32:27,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268272 states, 268271 states have (on average 1.3891773616976864) internal successors, (372676), 268271 states have internal predecessors, (372676), 0 states have call successors, (0), 0 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 13:32:28,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268272 states to 268272 states and 372676 transitions. [2022-12-13 13:32:28,065 INFO L78 Accepts]: Start accepts. Automaton has 268272 states and 372676 transitions. Word has length 150 [2022-12-13 13:32:28,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:32:28,065 INFO L495 AbstractCegarLoop]: Abstraction has 268272 states and 372676 transitions. [2022-12-13 13:32:28,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 13:32:28,065 INFO L276 IsEmpty]: Start isEmpty. Operand 268272 states and 372676 transitions. [2022-12-13 13:32:28,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-12-13 13:32:28,366 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:32:28,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:32:28,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 13:32:28,366 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:32:28,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:32:28,367 INFO L85 PathProgramCache]: Analyzing trace with hash -794017273, now seen corresponding path program 1 times [2022-12-13 13:32:28,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:32:28,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088267282] [2022-12-13 13:32:28,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:32:28,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:32:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:32:28,587 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 13:32:28,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:32:28,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088267282] [2022-12-13 13:32:28,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088267282] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:32:28,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:32:28,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:32:28,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102297942] [2022-12-13 13:32:28,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:32:28,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:32:28,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:32:28,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:32:28,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:32:28,589 INFO L87 Difference]: Start difference. First operand 268272 states and 372676 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 13:33:26,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:33:26,690 INFO L93 Difference]: Finished difference Result 632124 states and 877603 transitions. [2022-12-13 13:33:26,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:33:26,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2022-12-13 13:33:26,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:33:27,314 INFO L225 Difference]: With dead ends: 632124 [2022-12-13 13:33:27,314 INFO L226 Difference]: Without dead ends: 363913 [2022-12-13 13:33:27,491 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 13:33:27,492 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 2346 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2346 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 13:33:27,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2346 Valid, 567 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 13:33:27,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363913 states. [2022-12-13 13:34:26,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363913 to 363274. [2022-12-13 13:34:27,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363274 states, 363273 states have (on average 1.380592557112695) internal successors, (501532), 363273 states have internal predecessors, (501532), 0 states have call successors, (0), 0 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 13:34:27,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363274 states to 363274 states and 501532 transitions. [2022-12-13 13:34:27,871 INFO L78 Accepts]: Start accepts. Automaton has 363274 states and 501532 transitions. Word has length 150 [2022-12-13 13:34:27,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:34:27,871 INFO L495 AbstractCegarLoop]: Abstraction has 363274 states and 501532 transitions. [2022-12-13 13:34:27,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 13:34:27,871 INFO L276 IsEmpty]: Start isEmpty. Operand 363274 states and 501532 transitions. [2022-12-13 13:34:28,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-12-13 13:34:28,432 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:34:28,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:34:28,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 13:34:28,433 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:34:28,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:34:28,433 INFO L85 PathProgramCache]: Analyzing trace with hash 666561917, now seen corresponding path program 1 times [2022-12-13 13:34:28,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:34:28,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200818699] [2022-12-13 13:34:28,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:34:28,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:34:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:34:28,514 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 13:34:28,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:34:28,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200818699] [2022-12-13 13:34:28,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200818699] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:34:28,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:34:28,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:34:28,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548734399] [2022-12-13 13:34:28,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:34:28,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:34:28,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:34:28,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:34:28,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:34:28,516 INFO L87 Difference]: Start difference. First operand 363274 states and 501532 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 13:35:12,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:35:12,666 INFO L93 Difference]: Finished difference Result 602242 states and 832233 transitions. [2022-12-13 13:35:12,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:35:12,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2022-12-13 13:35:12,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:35:13,090 INFO L225 Difference]: With dead ends: 602242 [2022-12-13 13:35:13,090 INFO L226 Difference]: Without dead ends: 271332 [2022-12-13 13:35:13,279 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 13:35:13,279 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 324 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:35:13,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 979 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:35:13,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271332 states. [2022-12-13 13:35:57,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271332 to 271285. [2022-12-13 13:35:57,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271285 states, 271284 states have (on average 1.3734831394405862) internal successors, (372604), 271284 states have internal predecessors, (372604), 0 states have call successors, (0), 0 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 13:35:57,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271285 states to 271285 states and 372604 transitions. [2022-12-13 13:35:57,988 INFO L78 Accepts]: Start accepts. Automaton has 271285 states and 372604 transitions. Word has length 150 [2022-12-13 13:35:57,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:35:57,989 INFO L495 AbstractCegarLoop]: Abstraction has 271285 states and 372604 transitions. [2022-12-13 13:35:57,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 13:35:57,989 INFO L276 IsEmpty]: Start isEmpty. Operand 271285 states and 372604 transitions. [2022-12-13 13:35:58,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-12-13 13:35:58,170 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:35:58,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:35:58,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 13:35:58,170 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:35:58,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:35:58,171 INFO L85 PathProgramCache]: Analyzing trace with hash 638258981, now seen corresponding path program 1 times [2022-12-13 13:35:58,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:35:58,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718186251] [2022-12-13 13:35:58,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:35:58,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:35:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:35:58,349 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 13:35:58,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:35:58,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718186251] [2022-12-13 13:35:58,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718186251] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:35:58,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:35:58,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:35:58,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881878101] [2022-12-13 13:35:58,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:35:58,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:35:58,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:35:58,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:35:58,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:35:58,351 INFO L87 Difference]: Start difference. First operand 271285 states and 372604 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 13:37:14,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:37:14,931 INFO L93 Difference]: Finished difference Result 452886 states and 620617 transitions. [2022-12-13 13:37:14,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:37:14,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2022-12-13 13:37:14,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:37:15,689 INFO L225 Difference]: With dead ends: 452886 [2022-12-13 13:37:15,689 INFO L226 Difference]: Without dead ends: 452881 [2022-12-13 13:37:15,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:37:15,852 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 807 mSDsluCounter, 1776 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 2452 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:37:15,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 2452 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:37:16,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452881 states. [2022-12-13 13:38:06,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452881 to 279526. [2022-12-13 13:38:06,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279526 states, 279525 states have (on average 1.3624505858152223) internal successors, (380839), 279525 states have internal predecessors, (380839), 0 states have call successors, (0), 0 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 13:38:07,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279526 states to 279526 states and 380839 transitions. [2022-12-13 13:38:07,080 INFO L78 Accepts]: Start accepts. Automaton has 279526 states and 380839 transitions. Word has length 150 [2022-12-13 13:38:07,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:38:07,080 INFO L495 AbstractCegarLoop]: Abstraction has 279526 states and 380839 transitions. [2022-12-13 13:38:07,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 13:38:07,080 INFO L276 IsEmpty]: Start isEmpty. Operand 279526 states and 380839 transitions. [2022-12-13 13:38:07,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-12-13 13:38:07,271 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:38:07,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:38:07,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 13:38:07,271 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:38:07,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:38:07,272 INFO L85 PathProgramCache]: Analyzing trace with hash 149019877, now seen corresponding path program 1 times [2022-12-13 13:38:07,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:38:07,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176552301] [2022-12-13 13:38:07,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:38:07,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:38:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,391 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 13:38:07,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:38:07,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176552301] [2022-12-13 13:38:07,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176552301] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:38:07,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:38:07,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:38:07,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74360004] [2022-12-13 13:38:07,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:38:07,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:38:07,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:38:07,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:38:07,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:38:07,392 INFO L87 Difference]: Start difference. First operand 279526 states and 380839 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 13:39:19,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:39:19,888 INFO L93 Difference]: Finished difference Result 473617 states and 650344 transitions. [2022-12-13 13:39:19,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:39:19,889 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2022-12-13 13:39:19,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:39:20,682 INFO L225 Difference]: With dead ends: 473617 [2022-12-13 13:39:20,682 INFO L226 Difference]: Without dead ends: 412750 [2022-12-13 13:39:20,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 13:39:20,794 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 3726 mSDsluCounter, 3122 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3726 SdHoareTripleChecker+Valid, 3958 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:39:20,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3726 Valid, 3958 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:39:21,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412750 states.