./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709f19f1-7797-4963-aad5-6ddbd7fc8a86/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709f19f1-7797-4963-aad5-6ddbd7fc8a86/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709f19f1-7797-4963-aad5-6ddbd7fc8a86/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709f19f1-7797-4963-aad5-6ddbd7fc8a86/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709f19f1-7797-4963-aad5-6ddbd7fc8a86/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709f19f1-7797-4963-aad5-6ddbd7fc8a86/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6267d36e2eda753e26c9c989bedb16747ddf010783b33bee2d0cb2d2001d5ce --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:05:05,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:05:05,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:05:05,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:05:05,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:05:05,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:05:05,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:05:05,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:05:05,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:05:05,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:05:05,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:05:05,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:05:05,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:05:05,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:05:05,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:05:05,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:05:05,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:05:05,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:05:05,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:05:05,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:05:05,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:05:05,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:05:05,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:05:05,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:05:05,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:05:05,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:05:05,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:05:05,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:05:05,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:05:05,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:05:05,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:05:05,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:05:05,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:05:05,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:05:05,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:05:05,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:05:05,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:05:05,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:05:05,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:05:05,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:05:05,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:05:05,556 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709f19f1-7797-4963-aad5-6ddbd7fc8a86/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:05:05,591 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:05:05,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:05:05,592 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:05:05,592 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:05:05,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:05:05,593 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:05:05,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:05:05,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:05:05,594 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:05:05,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:05:05,595 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:05:05,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:05:05,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:05:05,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:05:05,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:05:05,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:05:05,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:05:05,596 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:05:05,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:05:05,597 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:05:05,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:05:05,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:05:05,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:05:05,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:05:05,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:05:05,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:05:05,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:05:05,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:05:05,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:05:05,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:05:05,599 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:05:05,600 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:05:05,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:05:05,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709f19f1-7797-4963-aad5-6ddbd7fc8a86/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709f19f1-7797-4963-aad5-6ddbd7fc8a86/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6267d36e2eda753e26c9c989bedb16747ddf010783b33bee2d0cb2d2001d5ce [2022-11-16 12:05:05,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:05:05,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:05:05,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:05:05,957 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:05:05,957 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:05:05,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709f19f1-7797-4963-aad5-6ddbd7fc8a86/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2022-11-16 12:05:06,046 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709f19f1-7797-4963-aad5-6ddbd7fc8a86/bin/uautomizer-tPACEb0tL8/data/7bd6e50b1/b2603abc57ee4b3598370d0a8762d645/FLAGbb896ddbc [2022-11-16 12:05:06,625 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:05:06,626 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709f19f1-7797-4963-aad5-6ddbd7fc8a86/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2022-11-16 12:05:06,636 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709f19f1-7797-4963-aad5-6ddbd7fc8a86/bin/uautomizer-tPACEb0tL8/data/7bd6e50b1/b2603abc57ee4b3598370d0a8762d645/FLAGbb896ddbc [2022-11-16 12:05:06,939 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709f19f1-7797-4963-aad5-6ddbd7fc8a86/bin/uautomizer-tPACEb0tL8/data/7bd6e50b1/b2603abc57ee4b3598370d0a8762d645 [2022-11-16 12:05:06,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:05:06,943 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:05:06,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:05:06,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:05:06,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:05:06,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:05:06" (1/1) ... [2022-11-16 12:05:06,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@142d3168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:06, skipping insertion in model container [2022-11-16 12:05:06,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:05:06" (1/1) ... [2022-11-16 12:05:06,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:05:06,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:05:07,272 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709f19f1-7797-4963-aad5-6ddbd7fc8a86/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c[12747,12760] [2022-11-16 12:05:07,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:05:07,284 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:05:07,345 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709f19f1-7797-4963-aad5-6ddbd7fc8a86/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c[12747,12760] [2022-11-16 12:05:07,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:05:07,360 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:05:07,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:07 WrapperNode [2022-11-16 12:05:07,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:05:07,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:05:07,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:05:07,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:05:07,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:07" (1/1) ... [2022-11-16 12:05:07,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:07" (1/1) ... [2022-11-16 12:05:07,408 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 441 [2022-11-16 12:05:07,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:05:07,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:05:07,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:05:07,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:05:07,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:07" (1/1) ... [2022-11-16 12:05:07,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:07" (1/1) ... [2022-11-16 12:05:07,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:07" (1/1) ... [2022-11-16 12:05:07,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:07" (1/1) ... [2022-11-16 12:05:07,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:07" (1/1) ... [2022-11-16 12:05:07,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:07" (1/1) ... [2022-11-16 12:05:07,470 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:07" (1/1) ... [2022-11-16 12:05:07,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:07" (1/1) ... [2022-11-16 12:05:07,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:05:07,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:05:07,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:05:07,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:05:07,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:07" (1/1) ... [2022-11-16 12:05:07,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:05:07,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709f19f1-7797-4963-aad5-6ddbd7fc8a86/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:07,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709f19f1-7797-4963-aad5-6ddbd7fc8a86/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:05:07,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709f19f1-7797-4963-aad5-6ddbd7fc8a86/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:05:07,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:05:07,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:05:07,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:05:07,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:05:07,712 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:05:07,714 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:05:08,433 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:05:08,442 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:05:08,442 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:05:08,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:05:08 BoogieIcfgContainer [2022-11-16 12:05:08,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:05:08,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:05:08,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:05:08,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:05:08,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:05:06" (1/3) ... [2022-11-16 12:05:08,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575d57af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:05:08, skipping insertion in model container [2022-11-16 12:05:08,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:07" (2/3) ... [2022-11-16 12:05:08,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575d57af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:05:08, skipping insertion in model container [2022-11-16 12:05:08,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:05:08" (3/3) ... [2022-11-16 12:05:08,455 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2022-11-16 12:05:08,478 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:05:08,479 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:05:08,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:05:08,536 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;@65076cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:05:08,536 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:05:08,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 123 states have (on average 1.7723577235772359) internal successors, (218), 124 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:08,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 12:05:08,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:08,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:08,552 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:08,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:08,558 INFO L85 PathProgramCache]: Analyzing trace with hash 728845207, now seen corresponding path program 1 times [2022-11-16 12:05:08,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:08,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028098266] [2022-11-16 12:05:08,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:08,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:08,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:08,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:08,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028098266] [2022-11-16 12:05:08,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028098266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:08,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:08,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:05:08,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022535563] [2022-11-16 12:05:08,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:08,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:05:08,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:08,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:05:08,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:05:08,856 INFO L87 Difference]: Start difference. First operand has 125 states, 123 states have (on average 1.7723577235772359) internal successors, (218), 124 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:08,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:08,886 INFO L93 Difference]: Finished difference Result 197 states and 340 transitions. [2022-11-16 12:05:08,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:05:08,889 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-16 12:05:08,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:08,899 INFO L225 Difference]: With dead ends: 197 [2022-11-16 12:05:08,899 INFO L226 Difference]: Without dead ends: 121 [2022-11-16 12:05:08,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:05:08,905 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:08,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:05:08,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-16 12:05:08,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-11-16 12:05:08,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.7583333333333333) internal successors, (211), 120 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:08,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 211 transitions. [2022-11-16 12:05:08,949 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 211 transitions. Word has length 37 [2022-11-16 12:05:08,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:08,950 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 211 transitions. [2022-11-16 12:05:08,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:08,950 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 211 transitions. [2022-11-16 12:05:08,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 12:05:08,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:08,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:08,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:05:08,953 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:08,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:08,954 INFO L85 PathProgramCache]: Analyzing trace with hash -88803243, now seen corresponding path program 1 times [2022-11-16 12:05:08,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:08,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607866400] [2022-11-16 12:05:08,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:08,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:09,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:09,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:09,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607866400] [2022-11-16 12:05:09,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607866400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:09,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:09,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:05:09,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798457446] [2022-11-16 12:05:09,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:09,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:05:09,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:09,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:05:09,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:05:09,225 INFO L87 Difference]: Start difference. First operand 121 states and 211 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:09,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:09,388 INFO L93 Difference]: Finished difference Result 259 states and 445 transitions. [2022-11-16 12:05:09,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:05:09,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-16 12:05:09,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:09,391 INFO L225 Difference]: With dead ends: 259 [2022-11-16 12:05:09,392 INFO L226 Difference]: Without dead ends: 188 [2022-11-16 12:05:09,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:05:09,394 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 117 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:09,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 799 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:05:09,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-16 12:05:09,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 121. [2022-11-16 12:05:09,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.5583333333333333) internal successors, (187), 120 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:09,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 187 transitions. [2022-11-16 12:05:09,407 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 187 transitions. Word has length 37 [2022-11-16 12:05:09,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:09,408 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 187 transitions. [2022-11-16 12:05:09,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:09,408 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 187 transitions. [2022-11-16 12:05:09,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-16 12:05:09,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:09,410 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] [2022-11-16 12:05:09,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:05:09,421 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:09,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:09,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1349742934, now seen corresponding path program 1 times [2022-11-16 12:05:09,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:09,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833097812] [2022-11-16 12:05:09,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:09,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:09,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:09,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:09,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833097812] [2022-11-16 12:05:09,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833097812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:09,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:09,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:05:09,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084527126] [2022-11-16 12:05:09,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:09,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:05:09,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:09,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:05:09,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:09,535 INFO L87 Difference]: Start difference. First operand 121 states and 187 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:09,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:09,597 INFO L93 Difference]: Finished difference Result 245 states and 399 transitions. [2022-11-16 12:05:09,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:05:09,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-11-16 12:05:09,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:09,604 INFO L225 Difference]: With dead ends: 245 [2022-11-16 12:05:09,604 INFO L226 Difference]: Without dead ends: 178 [2022-11-16 12:05:09,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:09,609 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 89 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:09,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 336 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:05:09,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-16 12:05:09,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2022-11-16 12:05:09,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.5885714285714285) internal successors, (278), 175 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:09,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 278 transitions. [2022-11-16 12:05:09,631 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 278 transitions. Word has length 60 [2022-11-16 12:05:09,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:09,632 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 278 transitions. [2022-11-16 12:05:09,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:09,632 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 278 transitions. [2022-11-16 12:05:09,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 12:05:09,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:09,634 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] [2022-11-16 12:05:09,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:05:09,635 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:09,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:09,636 INFO L85 PathProgramCache]: Analyzing trace with hash -329024092, now seen corresponding path program 1 times [2022-11-16 12:05:09,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:09,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904879808] [2022-11-16 12:05:09,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:09,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:09,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:09,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904879808] [2022-11-16 12:05:09,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904879808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:09,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:09,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:05:09,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067527932] [2022-11-16 12:05:09,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:09,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:05:09,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:09,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:05:09,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:09,736 INFO L87 Difference]: Start difference. First operand 176 states and 278 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:09,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:09,763 INFO L93 Difference]: Finished difference Result 404 states and 662 transitions. [2022-11-16 12:05:09,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:05:09,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-16 12:05:09,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:09,765 INFO L225 Difference]: With dead ends: 404 [2022-11-16 12:05:09,766 INFO L226 Difference]: Without dead ends: 282 [2022-11-16 12:05:09,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:09,768 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 91 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:09,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 344 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:05:09,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-16 12:05:09,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 280. [2022-11-16 12:05:09,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.6236559139784945) internal successors, (453), 279 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:09,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 453 transitions. [2022-11-16 12:05:09,807 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 453 transitions. Word has length 62 [2022-11-16 12:05:09,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:09,810 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 453 transitions. [2022-11-16 12:05:09,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:09,810 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 453 transitions. [2022-11-16 12:05:09,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-16 12:05:09,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:09,817 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] [2022-11-16 12:05:09,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:05:09,818 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:09,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:09,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1518735314, now seen corresponding path program 1 times [2022-11-16 12:05:09,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:09,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099731637] [2022-11-16 12:05:09,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:09,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:10,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:10,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:10,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099731637] [2022-11-16 12:05:10,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099731637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:10,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:10,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:05:10,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998652230] [2022-11-16 12:05:10,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:10,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:05:10,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:10,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:05:10,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:10,012 INFO L87 Difference]: Start difference. First operand 280 states and 453 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:10,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:10,065 INFO L93 Difference]: Finished difference Result 700 states and 1159 transitions. [2022-11-16 12:05:10,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:05:10,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-16 12:05:10,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:10,071 INFO L225 Difference]: With dead ends: 700 [2022-11-16 12:05:10,071 INFO L226 Difference]: Without dead ends: 474 [2022-11-16 12:05:10,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:10,083 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 85 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:10,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 345 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:05:10,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-11-16 12:05:10,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 472. [2022-11-16 12:05:10,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 471 states have (on average 1.6411889596602973) internal successors, (773), 471 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:10,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 773 transitions. [2022-11-16 12:05:10,123 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 773 transitions. Word has length 64 [2022-11-16 12:05:10,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:10,124 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 773 transitions. [2022-11-16 12:05:10,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:10,124 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 773 transitions. [2022-11-16 12:05:10,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 12:05:10,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:10,126 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] [2022-11-16 12:05:10,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:05:10,127 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:10,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:10,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1501093856, now seen corresponding path program 1 times [2022-11-16 12:05:10,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:10,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576943762] [2022-11-16 12:05:10,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:10,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:10,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:10,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:10,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576943762] [2022-11-16 12:05:10,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576943762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:10,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:10,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:05:10,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439704770] [2022-11-16 12:05:10,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:10,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:05:10,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:10,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:05:10,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:05:10,259 INFO L87 Difference]: Start difference. First operand 472 states and 773 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:10,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:10,510 INFO L93 Difference]: Finished difference Result 2012 states and 3391 transitions. [2022-11-16 12:05:10,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:05:10,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-16 12:05:10,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:10,517 INFO L225 Difference]: With dead ends: 2012 [2022-11-16 12:05:10,518 INFO L226 Difference]: Without dead ends: 1594 [2022-11-16 12:05:10,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:05:10,520 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 662 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:10,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 1253 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:05:10,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2022-11-16 12:05:10,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 837. [2022-11-16 12:05:10,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 836 states have (on average 1.6566985645933014) internal successors, (1385), 836 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1385 transitions. [2022-11-16 12:05:10,577 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1385 transitions. Word has length 66 [2022-11-16 12:05:10,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:10,577 INFO L495 AbstractCegarLoop]: Abstraction has 837 states and 1385 transitions. [2022-11-16 12:05:10,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:10,578 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1385 transitions. [2022-11-16 12:05:10,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 12:05:10,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:10,581 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] [2022-11-16 12:05:10,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:05:10,581 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:10,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:10,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1661403910, now seen corresponding path program 1 times [2022-11-16 12:05:10,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:10,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083415221] [2022-11-16 12:05:10,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:10,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:10,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:10,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:10,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083415221] [2022-11-16 12:05:10,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083415221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:10,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:10,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:05:10,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723593465] [2022-11-16 12:05:10,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:10,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:05:10,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:10,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:05:10,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:05:10,683 INFO L87 Difference]: Start difference. First operand 837 states and 1385 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:10,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:10,834 INFO L93 Difference]: Finished difference Result 2438 states and 4100 transitions. [2022-11-16 12:05:10,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:05:10,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-16 12:05:10,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:10,841 INFO L225 Difference]: With dead ends: 2438 [2022-11-16 12:05:10,841 INFO L226 Difference]: Without dead ends: 1655 [2022-11-16 12:05:10,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:05:10,843 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 331 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:10,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 606 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:05:10,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2022-11-16 12:05:10,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1237. [2022-11-16 12:05:10,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 1236 states have (on average 1.6642394822006472) internal successors, (2057), 1236 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:10,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 2057 transitions. [2022-11-16 12:05:10,916 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 2057 transitions. Word has length 67 [2022-11-16 12:05:10,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:10,916 INFO L495 AbstractCegarLoop]: Abstraction has 1237 states and 2057 transitions. [2022-11-16 12:05:10,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:10,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 2057 transitions. [2022-11-16 12:05:10,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 12:05:10,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:10,918 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] [2022-11-16 12:05:10,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:05:10,919 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:10,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:10,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1356808322, now seen corresponding path program 1 times [2022-11-16 12:05:10,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:10,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289860668] [2022-11-16 12:05:10,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:10,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:10,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:10,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:10,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289860668] [2022-11-16 12:05:10,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289860668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:10,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:10,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:05:10,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491396167] [2022-11-16 12:05:10,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:10,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:05:10,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:10,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:05:10,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:10,978 INFO L87 Difference]: Start difference. First operand 1237 states and 2057 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:11,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:11,084 INFO L93 Difference]: Finished difference Result 2752 states and 4627 transitions. [2022-11-16 12:05:11,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:05:11,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-11-16 12:05:11,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:11,091 INFO L225 Difference]: With dead ends: 2752 [2022-11-16 12:05:11,092 INFO L226 Difference]: Without dead ends: 1894 [2022-11-16 12:05:11,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:11,094 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 98 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:11,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 425 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:05:11,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2022-11-16 12:05:11,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1892. [2022-11-16 12:05:11,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 1.6636700158646218) internal successors, (3146), 1891 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:11,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 3146 transitions. [2022-11-16 12:05:11,246 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 3146 transitions. Word has length 68 [2022-11-16 12:05:11,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:11,247 INFO L495 AbstractCegarLoop]: Abstraction has 1892 states and 3146 transitions. [2022-11-16 12:05:11,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:11,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 3146 transitions. [2022-11-16 12:05:11,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 12:05:11,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:11,252 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] [2022-11-16 12:05:11,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:05:11,258 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:11,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:11,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2129523490, now seen corresponding path program 1 times [2022-11-16 12:05:11,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:11,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952443745] [2022-11-16 12:05:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:11,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:11,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:11,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:11,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952443745] [2022-11-16 12:05:11,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952443745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:11,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:11,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:05:11,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2198497] [2022-11-16 12:05:11,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:11,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:05:11,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:11,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:05:11,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:11,366 INFO L87 Difference]: Start difference. First operand 1892 states and 3146 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:11,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:11,510 INFO L93 Difference]: Finished difference Result 3736 states and 6225 transitions. [2022-11-16 12:05:11,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:05:11,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-11-16 12:05:11,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:11,521 INFO L225 Difference]: With dead ends: 3736 [2022-11-16 12:05:11,521 INFO L226 Difference]: Without dead ends: 2678 [2022-11-16 12:05:11,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:11,527 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 92 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:11,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 423 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:05:11,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2022-11-16 12:05:11,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 2676. [2022-11-16 12:05:11,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2676 states, 2675 states have (on average 1.652336448598131) internal successors, (4420), 2675 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:11,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 4420 transitions. [2022-11-16 12:05:11,736 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 4420 transitions. Word has length 68 [2022-11-16 12:05:11,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:11,736 INFO L495 AbstractCegarLoop]: Abstraction has 2676 states and 4420 transitions. [2022-11-16 12:05:11,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:11,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 4420 transitions. [2022-11-16 12:05:11,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 12:05:11,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:11,741 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] [2022-11-16 12:05:11,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:05:11,742 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:11,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:11,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1789914665, now seen corresponding path program 1 times [2022-11-16 12:05:11,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:11,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239429342] [2022-11-16 12:05:11,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:11,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:11,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:11,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239429342] [2022-11-16 12:05:11,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239429342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:11,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:11,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:05:11,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60989907] [2022-11-16 12:05:11,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:11,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:05:11,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:11,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:05:11,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:05:11,868 INFO L87 Difference]: Start difference. First operand 2676 states and 4420 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:12,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:12,271 INFO L93 Difference]: Finished difference Result 8472 states and 14048 transitions. [2022-11-16 12:05:12,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:05:12,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-11-16 12:05:12,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:12,293 INFO L225 Difference]: With dead ends: 8472 [2022-11-16 12:05:12,293 INFO L226 Difference]: Without dead ends: 5860 [2022-11-16 12:05:12,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:05:12,299 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 330 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:12,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 596 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:05:12,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5860 states. [2022-11-16 12:05:12,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5860 to 4249. [2022-11-16 12:05:12,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4249 states, 4248 states have (on average 1.643361581920904) internal successors, (6981), 4248 states have internal predecessors, (6981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:12,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4249 states to 4249 states and 6981 transitions. [2022-11-16 12:05:12,609 INFO L78 Accepts]: Start accepts. Automaton has 4249 states and 6981 transitions. Word has length 68 [2022-11-16 12:05:12,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:12,610 INFO L495 AbstractCegarLoop]: Abstraction has 4249 states and 6981 transitions. [2022-11-16 12:05:12,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:12,610 INFO L276 IsEmpty]: Start isEmpty. Operand 4249 states and 6981 transitions. [2022-11-16 12:05:12,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 12:05:12,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:12,611 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] [2022-11-16 12:05:12,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:05:12,612 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:12,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:12,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1075781058, now seen corresponding path program 1 times [2022-11-16 12:05:12,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:12,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261245569] [2022-11-16 12:05:12,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:12,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:12,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:12,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261245569] [2022-11-16 12:05:12,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261245569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:12,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:12,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:05:12,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076480651] [2022-11-16 12:05:12,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:12,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:05:12,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:12,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:05:12,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:12,667 INFO L87 Difference]: Start difference. First operand 4249 states and 6981 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:13,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:13,109 INFO L93 Difference]: Finished difference Result 8501 states and 13966 transitions. [2022-11-16 12:05:13,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:05:13,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-11-16 12:05:13,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:13,131 INFO L225 Difference]: With dead ends: 8501 [2022-11-16 12:05:13,132 INFO L226 Difference]: Without dead ends: 6029 [2022-11-16 12:05:13,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:13,138 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 86 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:13,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 412 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:05:13,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6029 states. [2022-11-16 12:05:13,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6029 to 6027. [2022-11-16 12:05:13,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6027 states, 6026 states have (on average 1.6267839362761367) internal successors, (9803), 6026 states have internal predecessors, (9803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:13,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6027 states to 6027 states and 9803 transitions. [2022-11-16 12:05:13,596 INFO L78 Accepts]: Start accepts. Automaton has 6027 states and 9803 transitions. Word has length 68 [2022-11-16 12:05:13,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:13,597 INFO L495 AbstractCegarLoop]: Abstraction has 6027 states and 9803 transitions. [2022-11-16 12:05:13,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:13,597 INFO L276 IsEmpty]: Start isEmpty. Operand 6027 states and 9803 transitions. [2022-11-16 12:05:13,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 12:05:13,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:13,598 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] [2022-11-16 12:05:13,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:05:13,598 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:13,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:13,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1237603747, now seen corresponding path program 1 times [2022-11-16 12:05:13,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:13,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376905326] [2022-11-16 12:05:13,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:13,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:13,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:13,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:13,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376905326] [2022-11-16 12:05:13,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376905326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:13,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:13,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:05:13,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394829788] [2022-11-16 12:05:13,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:13,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:05:13,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:13,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:05:13,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:05:13,673 INFO L87 Difference]: Start difference. First operand 6027 states and 9803 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:14,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:14,610 INFO L93 Difference]: Finished difference Result 19002 states and 30974 transitions. [2022-11-16 12:05:14,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:05:14,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-16 12:05:14,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:14,668 INFO L225 Difference]: With dead ends: 19002 [2022-11-16 12:05:14,668 INFO L226 Difference]: Without dead ends: 13047 [2022-11-16 12:05:14,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:05:14,678 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 328 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:14,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 598 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:05:14,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13047 states. [2022-11-16 12:05:15,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13047 to 9494. [2022-11-16 12:05:15,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9494 states, 9493 states have (on average 1.614874117770989) internal successors, (15330), 9493 states have internal predecessors, (15330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:15,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9494 states to 9494 states and 15330 transitions. [2022-11-16 12:05:15,461 INFO L78 Accepts]: Start accepts. Automaton has 9494 states and 15330 transitions. Word has length 69 [2022-11-16 12:05:15,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:15,462 INFO L495 AbstractCegarLoop]: Abstraction has 9494 states and 15330 transitions. [2022-11-16 12:05:15,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:15,463 INFO L276 IsEmpty]: Start isEmpty. Operand 9494 states and 15330 transitions. [2022-11-16 12:05:15,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-16 12:05:15,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:15,464 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] [2022-11-16 12:05:15,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:05:15,464 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:15,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:15,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1758782091, now seen corresponding path program 1 times [2022-11-16 12:05:15,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:15,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149131019] [2022-11-16 12:05:15,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:15,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:15,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:15,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149131019] [2022-11-16 12:05:15,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149131019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:15,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:15,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:05:15,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529529959] [2022-11-16 12:05:15,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:15,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:05:15,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:15,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:05:15,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:05:15,674 INFO L87 Difference]: Start difference. First operand 9494 states and 15330 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:16,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:16,411 INFO L93 Difference]: Finished difference Result 18918 states and 30563 transitions. [2022-11-16 12:05:16,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:05:16,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-16 12:05:16,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:16,433 INFO L225 Difference]: With dead ends: 18918 [2022-11-16 12:05:16,433 INFO L226 Difference]: Without dead ends: 9496 [2022-11-16 12:05:16,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:05:16,442 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 247 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:16,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 490 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:05:16,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9496 states. [2022-11-16 12:05:17,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9496 to 9494. [2022-11-16 12:05:17,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9494 states, 9493 states have (on average 1.6017065205941219) internal successors, (15205), 9493 states have internal predecessors, (15205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:17,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9494 states to 9494 states and 15205 transitions. [2022-11-16 12:05:17,218 INFO L78 Accepts]: Start accepts. Automaton has 9494 states and 15205 transitions. Word has length 71 [2022-11-16 12:05:17,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:17,219 INFO L495 AbstractCegarLoop]: Abstraction has 9494 states and 15205 transitions. [2022-11-16 12:05:17,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:17,219 INFO L276 IsEmpty]: Start isEmpty. Operand 9494 states and 15205 transitions. [2022-11-16 12:05:17,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-16 12:05:17,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:17,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:17,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:05:17,221 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:17,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:17,222 INFO L85 PathProgramCache]: Analyzing trace with hash 131691802, now seen corresponding path program 1 times [2022-11-16 12:05:17,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:17,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718378347] [2022-11-16 12:05:17,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:17,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:17,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:17,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718378347] [2022-11-16 12:05:17,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718378347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:17,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:17,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:05:17,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319816362] [2022-11-16 12:05:17,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:17,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:05:17,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:17,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:05:17,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:05:17,423 INFO L87 Difference]: Start difference. First operand 9494 states and 15205 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:18,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:18,841 INFO L93 Difference]: Finished difference Result 27206 states and 43711 transitions. [2022-11-16 12:05:18,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:05:18,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-16 12:05:18,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:18,886 INFO L225 Difference]: With dead ends: 27206 [2022-11-16 12:05:18,886 INFO L226 Difference]: Without dead ends: 17784 [2022-11-16 12:05:18,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:05:18,898 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 326 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:18,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 495 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:05:18,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17784 states. [2022-11-16 12:05:19,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17784 to 17782. [2022-11-16 12:05:19,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17782 states, 17781 states have (on average 1.5867499015803386) internal successors, (28214), 17781 states have internal predecessors, (28214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:20,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17782 states to 17782 states and 28214 transitions. [2022-11-16 12:05:20,025 INFO L78 Accepts]: Start accepts. Automaton has 17782 states and 28214 transitions. Word has length 74 [2022-11-16 12:05:20,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:20,026 INFO L495 AbstractCegarLoop]: Abstraction has 17782 states and 28214 transitions. [2022-11-16 12:05:20,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:20,026 INFO L276 IsEmpty]: Start isEmpty. Operand 17782 states and 28214 transitions. [2022-11-16 12:05:20,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-16 12:05:20,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:20,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:20,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:05:20,028 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:20,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:20,029 INFO L85 PathProgramCache]: Analyzing trace with hash -641097122, now seen corresponding path program 1 times [2022-11-16 12:05:20,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:20,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508336936] [2022-11-16 12:05:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:20,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:20,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:20,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:20,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508336936] [2022-11-16 12:05:20,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508336936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:20,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:20,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:05:20,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213481086] [2022-11-16 12:05:20,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:20,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:05:20,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:20,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:05:20,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:05:20,254 INFO L87 Difference]: Start difference. First operand 17782 states and 28214 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:22,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:22,472 INFO L93 Difference]: Finished difference Result 35105 states and 54928 transitions. [2022-11-16 12:05:22,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:05:22,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-11-16 12:05:22,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:22,575 INFO L225 Difference]: With dead ends: 35105 [2022-11-16 12:05:22,576 INFO L226 Difference]: Without dead ends: 35103 [2022-11-16 12:05:22,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:05:22,588 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 287 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:22,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 797 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:05:22,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35103 states. [2022-11-16 12:05:23,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35103 to 18868. [2022-11-16 12:05:23,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18868 states, 18867 states have (on average 1.5524990724545502) internal successors, (29291), 18867 states have internal predecessors, (29291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:24,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18868 states to 18868 states and 29291 transitions. [2022-11-16 12:05:24,048 INFO L78 Accepts]: Start accepts. Automaton has 18868 states and 29291 transitions. Word has length 75 [2022-11-16 12:05:24,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:24,049 INFO L495 AbstractCegarLoop]: Abstraction has 18868 states and 29291 transitions. [2022-11-16 12:05:24,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:24,049 INFO L276 IsEmpty]: Start isEmpty. Operand 18868 states and 29291 transitions. [2022-11-16 12:05:24,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 12:05:24,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:24,052 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:24,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:05:24,052 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:24,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:24,053 INFO L85 PathProgramCache]: Analyzing trace with hash -75042281, now seen corresponding path program 1 times [2022-11-16 12:05:24,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:24,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880144483] [2022-11-16 12:05:24,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:24,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:24,184 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:05:24,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:24,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880144483] [2022-11-16 12:05:24,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880144483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:24,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:24,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:05:24,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302822459] [2022-11-16 12:05:24,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:24,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:05:24,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:24,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:05:24,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:05:24,189 INFO L87 Difference]: Start difference. First operand 18868 states and 29291 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:26,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:26,342 INFO L93 Difference]: Finished difference Result 46584 states and 72575 transitions. [2022-11-16 12:05:26,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:05:26,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 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 101 [2022-11-16 12:05:26,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:26,412 INFO L225 Difference]: With dead ends: 46584 [2022-11-16 12:05:26,413 INFO L226 Difference]: Without dead ends: 37342 [2022-11-16 12:05:26,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:05:26,427 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 417 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:26,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 803 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:05:26,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37342 states. [2022-11-16 12:05:28,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37342 to 29092. [2022-11-16 12:05:29,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29092 states, 29091 states have (on average 1.5493107834038018) internal successors, (45071), 29091 states have internal predecessors, (45071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:29,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29092 states to 29092 states and 45071 transitions. [2022-11-16 12:05:29,106 INFO L78 Accepts]: Start accepts. Automaton has 29092 states and 45071 transitions. Word has length 101 [2022-11-16 12:05:29,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:29,107 INFO L495 AbstractCegarLoop]: Abstraction has 29092 states and 45071 transitions. [2022-11-16 12:05:29,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:29,107 INFO L276 IsEmpty]: Start isEmpty. Operand 29092 states and 45071 transitions. [2022-11-16 12:05:29,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 12:05:29,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:29,110 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:29,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:05:29,111 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:29,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:29,112 INFO L85 PathProgramCache]: Analyzing trace with hash -847757449, now seen corresponding path program 1 times [2022-11-16 12:05:29,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:29,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297793638] [2022-11-16 12:05:29,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:29,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:29,273 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:05:29,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:29,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297793638] [2022-11-16 12:05:29,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297793638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:29,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:29,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:05:29,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113370261] [2022-11-16 12:05:29,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:29,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:05:29,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:29,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:05:29,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:05:29,277 INFO L87 Difference]: Start difference. First operand 29092 states and 45071 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:32,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:32,309 INFO L93 Difference]: Finished difference Result 52276 states and 81445 transitions. [2022-11-16 12:05:32,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:05:32,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 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 101 [2022-11-16 12:05:32,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:32,388 INFO L225 Difference]: With dead ends: 52276 [2022-11-16 12:05:32,389 INFO L226 Difference]: Without dead ends: 43294 [2022-11-16 12:05:32,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:05:32,412 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 413 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:32,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 849 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:05:32,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43294 states. [2022-11-16 12:05:35,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43294 to 39560. [2022-11-16 12:05:35,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39560 states, 39559 states have (on average 1.5506711494223817) internal successors, (61343), 39559 states have internal predecessors, (61343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:35,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39560 states to 39560 states and 61343 transitions. [2022-11-16 12:05:35,401 INFO L78 Accepts]: Start accepts. Automaton has 39560 states and 61343 transitions. Word has length 101 [2022-11-16 12:05:35,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:35,402 INFO L495 AbstractCegarLoop]: Abstraction has 39560 states and 61343 transitions. [2022-11-16 12:05:35,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:35,403 INFO L276 IsEmpty]: Start isEmpty. Operand 39560 states and 61343 transitions. [2022-11-16 12:05:35,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 12:05:35,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:35,406 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:35,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:05:35,407 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:35,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:35,407 INFO L85 PathProgramCache]: Analyzing trace with hash 205984983, now seen corresponding path program 1 times [2022-11-16 12:05:35,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:35,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589219456] [2022-11-16 12:05:35,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:35,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:35,585 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 12:05:35,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:35,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589219456] [2022-11-16 12:05:35,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589219456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:35,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:35,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:05:35,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818353510] [2022-11-16 12:05:35,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:35,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:05:35,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:35,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:05:35,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:05:35,588 INFO L87 Difference]: Start difference. First operand 39560 states and 61343 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:38,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:38,604 INFO L93 Difference]: Finished difference Result 55900 states and 87085 transitions. [2022-11-16 12:05:38,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:05:38,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 101 [2022-11-16 12:05:38,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:38,670 INFO L225 Difference]: With dead ends: 55900 [2022-11-16 12:05:38,671 INFO L226 Difference]: Without dead ends: 46918 [2022-11-16 12:05:38,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:05:38,686 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 424 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:38,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 808 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:05:38,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46918 states. [2022-11-16 12:05:42,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46918 to 45408. [2022-11-16 12:05:42,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45408 states, 45407 states have (on average 1.5525139295703305) internal successors, (70495), 45407 states have internal predecessors, (70495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:42,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45408 states to 45408 states and 70495 transitions. [2022-11-16 12:05:42,108 INFO L78 Accepts]: Start accepts. Automaton has 45408 states and 70495 transitions. Word has length 101 [2022-11-16 12:05:42,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:42,108 INFO L495 AbstractCegarLoop]: Abstraction has 45408 states and 70495 transitions. [2022-11-16 12:05:42,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:42,109 INFO L276 IsEmpty]: Start isEmpty. Operand 45408 states and 70495 transitions. [2022-11-16 12:05:42,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 12:05:42,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:42,111 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:42,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:05:42,111 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:42,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:42,112 INFO L85 PathProgramCache]: Analyzing trace with hash 45823919, now seen corresponding path program 1 times [2022-11-16 12:05:42,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:42,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127115722] [2022-11-16 12:05:42,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:42,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:42,217 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:05:42,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:42,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127115722] [2022-11-16 12:05:42,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127115722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:42,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:42,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:05:42,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405045723] [2022-11-16 12:05:42,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:42,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:05:42,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:42,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:05:42,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:05:42,221 INFO L87 Difference]: Start difference. First operand 45408 states and 70495 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:46,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:46,063 INFO L93 Difference]: Finished difference Result 74291 states and 115964 transitions. [2022-11-16 12:05:46,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:05:46,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 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 102 [2022-11-16 12:05:46,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:46,145 INFO L225 Difference]: With dead ends: 74291 [2022-11-16 12:05:46,145 INFO L226 Difference]: Without dead ends: 59097 [2022-11-16 12:05:46,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:05:46,163 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 172 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:46,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 621 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:05:46,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59097 states. [2022-11-16 12:05:50,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59097 to 57589. [2022-11-16 12:05:50,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57589 states, 57588 states have (on average 1.5524935750503577) internal successors, (89405), 57588 states have internal predecessors, (89405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:50,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57589 states to 57589 states and 89405 transitions. [2022-11-16 12:05:50,542 INFO L78 Accepts]: Start accepts. Automaton has 57589 states and 89405 transitions. Word has length 102 [2022-11-16 12:05:50,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:50,543 INFO L495 AbstractCegarLoop]: Abstraction has 57589 states and 89405 transitions. [2022-11-16 12:05:50,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:50,543 INFO L276 IsEmpty]: Start isEmpty. Operand 57589 states and 89405 transitions. [2022-11-16 12:05:50,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 12:05:50,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:50,545 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:50,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:05:50,546 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:50,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:50,546 INFO L85 PathProgramCache]: Analyzing trace with hash 468525745, now seen corresponding path program 1 times [2022-11-16 12:05:50,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:50,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832793280] [2022-11-16 12:05:50,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:50,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:50,609 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:05:50,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:50,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832793280] [2022-11-16 12:05:50,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832793280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:50,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:50,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:05:50,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560721849] [2022-11-16 12:05:50,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:50,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:05:50,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:50,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:05:50,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:50,612 INFO L87 Difference]: Start difference. First operand 57589 states and 89405 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)