./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/max10-1.i --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_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/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_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/max10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/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_37988449-c512-4d4d-ad34-934f32157f7c/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 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e --- 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 12:00:27,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:00:27,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:00:27,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:00:27,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:00:27,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:00:27,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:00:27,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:00:27,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:00:27,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:00:27,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:00:27,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:00:27,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:00:27,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:00:27,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:00:27,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:00:27,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:00:27,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:00:27,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:00:27,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:00:27,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:00:27,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:00:27,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:00:27,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:00:27,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:00:27,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:00:27,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:00:27,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:00:27,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:00:27,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:00:27,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:00:27,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:00:27,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:00:27,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:00:27,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:00:27,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:00:27,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:00:27,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:00:27,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:00:27,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:00:27,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:00:27,472 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:00:27,502 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:00:27,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:00:27,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:00:27,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:00:27,504 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:00:27,505 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:00:27,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:00:27,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:00:27,506 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:00:27,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:00:27,506 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:00:27,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:00:27,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:00:27,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:00:27,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:00:27,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:00:27,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:00:27,508 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:00:27,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:00:27,509 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:00:27,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:00:27,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:00:27,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:00:27,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:00:27,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:00:27,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:00:27,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:00:27,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:00:27,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:00:27,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:00:27,512 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:00:27,512 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:00:27,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:00:27,512 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_37988449-c512-4d4d-ad34-934f32157f7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e [2022-11-16 12:00:27,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:00:27,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:00:27,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:00:27,926 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:00:27,926 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:00:27,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/reducercommutativity/max10-1.i [2022-11-16 12:00:28,008 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/data/160cebef9/1bb5f5979ebd4ec2b1497b98417607c6/FLAG464b5c3e3 [2022-11-16 12:00:28,613 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:00:28,614 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/sv-benchmarks/c/reducercommutativity/max10-1.i [2022-11-16 12:00:28,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/data/160cebef9/1bb5f5979ebd4ec2b1497b98417607c6/FLAG464b5c3e3 [2022-11-16 12:00:28,925 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/data/160cebef9/1bb5f5979ebd4ec2b1497b98417607c6 [2022-11-16 12:00:28,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:00:28,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:00:28,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:00:28,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:00:28,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:00:28,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:00:28" (1/1) ... [2022-11-16 12:00:28,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@156297f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:28, skipping insertion in model container [2022-11-16 12:00:28,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:00:28" (1/1) ... [2022-11-16 12:00:28,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:00:28,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:00:29,263 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_37988449-c512-4d4d-ad34-934f32157f7c/sv-benchmarks/c/reducercommutativity/max10-1.i[1290,1303] [2022-11-16 12:00:29,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:00:29,278 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:00:29,337 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_37988449-c512-4d4d-ad34-934f32157f7c/sv-benchmarks/c/reducercommutativity/max10-1.i[1290,1303] [2022-11-16 12:00:29,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:00:29,359 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:00:29,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:29 WrapperNode [2022-11-16 12:00:29,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:00:29,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:00:29,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:00:29,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:00:29,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:29" (1/1) ... [2022-11-16 12:00:29,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:29" (1/1) ... [2022-11-16 12:00:29,419 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-11-16 12:00:29,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:00:29,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:00:29,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:00:29,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:00:29,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:29" (1/1) ... [2022-11-16 12:00:29,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:29" (1/1) ... [2022-11-16 12:00:29,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:29" (1/1) ... [2022-11-16 12:00:29,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:29" (1/1) ... [2022-11-16 12:00:29,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:29" (1/1) ... [2022-11-16 12:00:29,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:29" (1/1) ... [2022-11-16 12:00:29,463 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:29" (1/1) ... [2022-11-16 12:00:29,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:29" (1/1) ... [2022-11-16 12:00:29,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:00:29,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:00:29,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:00:29,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:00:29,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:29" (1/1) ... [2022-11-16 12:00:29,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:00:29,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:29,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:00:29,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:00:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:00:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure max [2022-11-16 12:00:29,603 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2022-11-16 12:00:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:00:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:00:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:00:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:00:29,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:00:29,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:00:29,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:00:29,748 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:00:29,749 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:00:29,961 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:00:29,970 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:00:29,980 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 12:00:29,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:00:29 BoogieIcfgContainer [2022-11-16 12:00:29,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:00:29,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:00:30,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:00:30,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:00:30,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:00:28" (1/3) ... [2022-11-16 12:00:30,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f45b39f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:00:30, skipping insertion in model container [2022-11-16 12:00:30,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:29" (2/3) ... [2022-11-16 12:00:30,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f45b39f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:00:30, skipping insertion in model container [2022-11-16 12:00:30,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:00:29" (3/3) ... [2022-11-16 12:00:30,010 INFO L112 eAbstractionObserver]: Analyzing ICFG max10-1.i [2022-11-16 12:00:30,048 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:00:30,052 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:00:30,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:00:30,160 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;@6682260c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:00:30,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:00:30,165 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:00:30,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 12:00:30,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:00:30,179 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:30,179 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:00:30,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:30,187 INFO L85 PathProgramCache]: Analyzing trace with hash -528134526, now seen corresponding path program 1 times [2022-11-16 12:00:30,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:30,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308394480] [2022-11-16 12:00:30,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:30,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:30,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:00:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:30,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:00:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:30,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 12:00:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:30,565 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:00:30,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:30,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308394480] [2022-11-16 12:00:30,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308394480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:30,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:30,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:00:30,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544247579] [2022-11-16 12:00:30,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:30,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:00:30,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:30,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:00:30,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:00:30,665 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:00:30,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:00:30,705 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2022-11-16 12:00:30,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:00:30,709 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-11-16 12:00:30,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:00:30,728 INFO L225 Difference]: With dead ends: 52 [2022-11-16 12:00:30,729 INFO L226 Difference]: Without dead ends: 24 [2022-11-16 12:00:30,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 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 12:00:30,747 INFO L413 NwaCegarLoop]: 33 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, 33 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 12:00:30,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:00:30,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-16 12:00:30,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-16 12:00:30,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:00:30,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2022-11-16 12:00:30,803 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 28 [2022-11-16 12:00:30,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:00:30,803 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-11-16 12:00:30,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:00:30,805 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2022-11-16 12:00:30,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 12:00:30,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:00:30,811 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:30,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:00:30,813 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:00:30,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:30,817 INFO L85 PathProgramCache]: Analyzing trace with hash -321958693, now seen corresponding path program 1 times [2022-11-16 12:00:30,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:30,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511115029] [2022-11-16 12:00:30,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:30,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:31,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:00:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:31,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:00:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:31,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 12:00:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:31,159 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:00:31,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:31,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511115029] [2022-11-16 12:00:31,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511115029] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:00:31,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985075761] [2022-11-16 12:00:31,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:31,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:31,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:31,172 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:31,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:00:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:31,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:00:31,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:31,327 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:00:31,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:00:31,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985075761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:31,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:00:31,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-16 12:00:31,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213701814] [2022-11-16 12:00:31,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:31,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:00:31,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:31,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:00:31,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:00:31,334 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:00:31,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:00:31,353 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2022-11-16 12:00:31,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:00:31,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-11-16 12:00:31,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:00:31,356 INFO L225 Difference]: With dead ends: 46 [2022-11-16 12:00:31,356 INFO L226 Difference]: Without dead ends: 26 [2022-11-16 12:00:31,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:00:31,358 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:00:31,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 52 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:00:31,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-16 12:00:31,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-11-16 12:00:31,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:00:31,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-11-16 12:00:31,367 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 28 [2022-11-16 12:00:31,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:00:31,367 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-11-16 12:00:31,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:00:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-11-16 12:00:31,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 12:00:31,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:00:31,370 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:31,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:00:31,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:31,577 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:00:31,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:31,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1777476163, now seen corresponding path program 1 times [2022-11-16 12:00:31,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:31,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378193359] [2022-11-16 12:00:31,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:31,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:31,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-16 12:00:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:31,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:00:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:31,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 12:00:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:31,754 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:00:31,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:31,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378193359] [2022-11-16 12:00:31,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378193359] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:00:31,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046280133] [2022-11-16 12:00:31,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:31,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:31,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:31,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:31,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:00:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:31,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:00:31,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:31,899 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 12:00:31,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:00:31,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046280133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:31,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:00:31,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-16 12:00:31,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846124169] [2022-11-16 12:00:31,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:31,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:00:31,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:31,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:00:31,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:00:31,903 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:00:31,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:00:31,922 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2022-11-16 12:00:31,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:00:31,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-11-16 12:00:31,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:00:31,924 INFO L225 Difference]: With dead ends: 48 [2022-11-16 12:00:31,924 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 12:00:31,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:00:31,926 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:00:31,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 50 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:00:31,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 12:00:31,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2022-11-16 12:00:31,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:00:31,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-11-16 12:00:31,934 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 30 [2022-11-16 12:00:31,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:00:31,935 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-11-16 12:00:31,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:00:31,935 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-11-16 12:00:31,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-16 12:00:31,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:00:31,937 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:31,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 12:00:32,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:32,143 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:00:32,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:32,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1540631384, now seen corresponding path program 1 times [2022-11-16 12:00:32,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:32,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514581803] [2022-11-16 12:00:32,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:32,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:32,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-16 12:00:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:32,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-16 12:00:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:32,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 12:00:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:32,331 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:00:32,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:32,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514581803] [2022-11-16 12:00:32,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514581803] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:00:32,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677982598] [2022-11-16 12:00:32,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:32,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:32,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:32,334 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:32,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:00:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:32,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:00:32,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:32,506 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:00:32,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:00:32,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677982598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:32,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:00:32,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-16 12:00:32,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460027933] [2022-11-16 12:00:32,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:32,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:00:32,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:32,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:00:32,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:00:32,520 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:00:32,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:00:32,540 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2022-11-16 12:00:32,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:00:32,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2022-11-16 12:00:32,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:00:32,542 INFO L225 Difference]: With dead ends: 43 [2022-11-16 12:00:32,542 INFO L226 Difference]: Without dead ends: 28 [2022-11-16 12:00:32,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:00:32,544 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:00:32,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 51 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:00:32,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-16 12:00:32,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-11-16 12:00:32,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:00:32,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-11-16 12:00:32,555 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 42 [2022-11-16 12:00:32,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:00:32,561 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-11-16 12:00:32,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:00:32,562 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-11-16 12:00:32,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 12:00:32,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:00:32,563 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:32,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:00:32,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:32,773 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:00:32,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:32,773 INFO L85 PathProgramCache]: Analyzing trace with hash -180199466, now seen corresponding path program 1 times [2022-11-16 12:00:32,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:32,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248845778] [2022-11-16 12:00:32,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:32,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:32,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-16 12:00:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:32,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-16 12:00:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:32,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 12:00:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:32,916 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 12:00:32,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:32,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248845778] [2022-11-16 12:00:32,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248845778] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:00:32,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645782929] [2022-11-16 12:00:32,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:32,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:32,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:32,920 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:32,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:00:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:33,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:00:33,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:33,076 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-16 12:00:33,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:00:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-16 12:00:33,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645782929] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:00:33,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:00:33,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-11-16 12:00:33,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184028560] [2022-11-16 12:00:33,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:00:33,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:00:33,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:33,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:00:33,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:00:33,152 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 12:00:33,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:00:33,216 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2022-11-16 12:00:33,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:00:33,216 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2022-11-16 12:00:33,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:00:33,217 INFO L225 Difference]: With dead ends: 62 [2022-11-16 12:00:33,218 INFO L226 Difference]: Without dead ends: 40 [2022-11-16 12:00:33,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:00:33,220 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:00:33,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 70 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:00:33,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-16 12:00:33,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2022-11-16 12:00:33,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:00:33,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-11-16 12:00:33,228 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 44 [2022-11-16 12:00:33,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:00:33,228 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-11-16 12:00:33,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 12:00:33,229 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-11-16 12:00:33,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 12:00:33,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:00:33,232 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:33,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 12:00:33,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:33,433 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:00:33,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:33,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1875433, now seen corresponding path program 2 times [2022-11-16 12:00:33,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:33,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295466034] [2022-11-16 12:00:33,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:33,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:33,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:00:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:33,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 12:00:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:33,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:00:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-16 12:00:33,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:33,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295466034] [2022-11-16 12:00:33,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295466034] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:00:33,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392195087] [2022-11-16 12:00:33,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:00:33,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:33,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:33,723 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:33,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:00:33,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:00:33,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:00:33,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:00:33,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:33,974 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-16 12:00:33,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:00:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-16 12:00:34,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392195087] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:00:34,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:00:34,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-11-16 12:00:34,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902537005] [2022-11-16 12:00:34,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:00:34,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:00:34,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:34,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:00:34,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:00:34,130 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 12:00:34,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:00:34,241 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2022-11-16 12:00:34,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:00:34,250 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2022-11-16 12:00:34,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:00:34,251 INFO L225 Difference]: With dead ends: 78 [2022-11-16 12:00:34,251 INFO L226 Difference]: Without dead ends: 52 [2022-11-16 12:00:34,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:00:34,256 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:00:34,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 93 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:00:34,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-16 12:00:34,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-11-16 12:00:34,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:00:34,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-11-16 12:00:34,268 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 62 [2022-11-16 12:00:34,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:00:34,269 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-11-16 12:00:34,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 12:00:34,269 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-11-16 12:00:34,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-16 12:00:34,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:00:34,277 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:34,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:00:34,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:00:34,484 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:00:34,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:34,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1341943393, now seen corresponding path program 3 times [2022-11-16 12:00:34,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:34,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909934343] [2022-11-16 12:00:34,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:34,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:34,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:00:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:34,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 12:00:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:34,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-16 12:00:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:34,753 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-16 12:00:34,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:34,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909934343] [2022-11-16 12:00:34,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909934343] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:00:34,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104258231] [2022-11-16 12:00:34,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:00:34,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:34,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:34,759 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:34,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:00:34,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 12:00:34,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:00:34,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:00:34,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-16 12:00:34,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:00:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-16 12:00:35,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104258231] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:00:35,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:00:35,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-11-16 12:00:35,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900611052] [2022-11-16 12:00:35,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:00:35,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:00:35,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:35,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:00:35,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:00:35,031 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 12:00:35,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:00:35,080 INFO L93 Difference]: Finished difference Result 94 states and 115 transitions. [2022-11-16 12:00:35,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:00:35,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2022-11-16 12:00:35,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:00:35,082 INFO L225 Difference]: With dead ends: 94 [2022-11-16 12:00:35,082 INFO L226 Difference]: Without dead ends: 67 [2022-11-16 12:00:35,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:00:35,083 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 40 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:00:35,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 58 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:00:35,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-16 12:00:35,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-11-16 12:00:35,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 62 states have internal predecessors, (71), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:00:35,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2022-11-16 12:00:35,094 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 76 [2022-11-16 12:00:35,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:00:35,094 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2022-11-16 12:00:35,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 12:00:35,095 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2022-11-16 12:00:35,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 12:00:35,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:00:35,097 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:35,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:00:35,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:35,303 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:00:35,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:35,304 INFO L85 PathProgramCache]: Analyzing trace with hash -28042803, now seen corresponding path program 4 times [2022-11-16 12:00:35,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:35,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335977863] [2022-11-16 12:00:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:35,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:35,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:00:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:35,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:00:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:35,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-16 12:00:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:35,760 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-16 12:00:35,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:35,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335977863] [2022-11-16 12:00:35,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335977863] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:00:35,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247512905] [2022-11-16 12:00:35,761 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:00:35,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:35,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:35,762 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:35,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:00:35,949 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:00:35,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:00:35,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:00:35,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:36,028 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 316 proven. 66 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2022-11-16 12:00:36,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:00:36,182 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-16 12:00:36,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247512905] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:00:36,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:00:36,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-11-16 12:00:36,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565926241] [2022-11-16 12:00:36,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:00:36,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:00:36,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:36,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:00:36,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:00:36,185 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:00:36,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:00:36,261 INFO L93 Difference]: Finished difference Result 126 states and 155 transitions. [2022-11-16 12:00:36,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:00:36,262 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-16 12:00:36,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:00:36,265 INFO L225 Difference]: With dead ends: 126 [2022-11-16 12:00:36,265 INFO L226 Difference]: Without dead ends: 83 [2022-11-16 12:00:36,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 247 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:00:36,269 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 62 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:00:36,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 66 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:00:36,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-16 12:00:36,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-11-16 12:00:36,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.1666666666666667) internal successors, (91), 78 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:00:36,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2022-11-16 12:00:36,298 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 124 [2022-11-16 12:00:36,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:00:36,303 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2022-11-16 12:00:36,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:00:36,304 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2022-11-16 12:00:36,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-16 12:00:36,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:00:36,317 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:36,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 12:00:36,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:36,523 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:00:36,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:36,523 INFO L85 PathProgramCache]: Analyzing trace with hash -281100999, now seen corresponding path program 5 times [2022-11-16 12:00:36,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:36,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040770513] [2022-11-16 12:00:36,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:36,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:00:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 12:00:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-16 12:00:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2022-11-16 12:00:36,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:36,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040770513] [2022-11-16 12:00:36,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040770513] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:00:36,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155590633] [2022-11-16 12:00:36,788 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:00:36,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:36,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:36,789 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:36,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:00:37,345 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-11-16 12:00:37,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:00:37,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:00:37,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:37,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 850 proven. 4 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2022-11-16 12:00:37,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:00:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2022-11-16 12:00:37,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155590633] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:00:37,451 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:00:37,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-16 12:00:37,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372254091] [2022-11-16 12:00:37,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:00:37,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:00:37,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:37,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:00:37,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:00:37,454 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:00:37,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:00:37,497 INFO L93 Difference]: Finished difference Result 142 states and 170 transitions. [2022-11-16 12:00:37,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:00:37,498 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 172 [2022-11-16 12:00:37,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:00:37,502 INFO L225 Difference]: With dead ends: 142 [2022-11-16 12:00:37,502 INFO L226 Difference]: Without dead ends: 91 [2022-11-16 12:00:37,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:00:37,509 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:00:37,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 51 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:00:37,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-16 12:00:37,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-11-16 12:00:37,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.1511627906976745) internal successors, (99), 86 states have internal predecessors, (99), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:00:37,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2022-11-16 12:00:37,536 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 172 [2022-11-16 12:00:37,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:00:37,537 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2022-11-16 12:00:37,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:00:37,537 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2022-11-16 12:00:37,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-16 12:00:37,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:00:37,548 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:37,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:00:37,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:37,749 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:00:37,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:37,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1450203185, now seen corresponding path program 6 times [2022-11-16 12:00:37,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:37,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606510008] [2022-11-16 12:00:37,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:37,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:38,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:00:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:38,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 12:00:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:38,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 12:00:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:38,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2022-11-16 12:00:38,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:38,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606510008] [2022-11-16 12:00:38,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606510008] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:00:38,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409431087] [2022-11-16 12:00:38,239 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 12:00:38,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:38,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:38,240 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:38,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:00:39,259 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-11-16 12:00:39,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:00:39,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:00:39,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:39,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 850 proven. 36 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2022-11-16 12:00:39,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:00:39,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2022-11-16 12:00:39,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409431087] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:00:39,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:00:39,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-11-16 12:00:39,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808750510] [2022-11-16 12:00:39,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:00:39,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:00:39,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:39,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:00:39,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:00:39,436 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:00:39,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:00:39,477 INFO L93 Difference]: Finished difference Result 148 states and 175 transitions. [2022-11-16 12:00:39,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:00:39,478 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 180 [2022-11-16 12:00:39,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:00:39,479 INFO L225 Difference]: With dead ends: 148 [2022-11-16 12:00:39,480 INFO L226 Difference]: Without dead ends: 97 [2022-11-16 12:00:39,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 358 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:00:39,481 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:00:39,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 99 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:00:39,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-16 12:00:39,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-11-16 12:00:39,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.141304347826087) internal successors, (105), 92 states have internal predecessors, (105), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:00:39,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2022-11-16 12:00:39,490 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 180 [2022-11-16 12:00:39,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:00:39,491 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2022-11-16 12:00:39,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:00:39,491 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2022-11-16 12:00:39,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-16 12:00:39,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:00:39,494 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:39,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:00:39,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:39,708 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:00:39,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:39,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1435992661, now seen corresponding path program 7 times [2022-11-16 12:00:39,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:39,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200975836] [2022-11-16 12:00:39,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:39,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:42,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:00:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:43,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 12:00:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:44,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-16 12:00:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:44,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 38 proven. 1214 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2022-11-16 12:00:44,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:44,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200975836] [2022-11-16 12:00:44,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200975836] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:00:44,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393251657] [2022-11-16 12:00:44,239 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 12:00:44,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:44,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:44,241 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:44,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:00:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:44,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 169 conjunts are in the unsatisfiable core [2022-11-16 12:00:44,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:44,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 12:00:50,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:50,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:50,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:50,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:50,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:50,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:50,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:50,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:50,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:50,065 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:50,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 162 treesize of output 132 [2022-11-16 12:00:52,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:52,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:52,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:52,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:52,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:52,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:52,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:52,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:52,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:00:52,521 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:52,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 157 treesize of output 134 [2022-11-16 12:00:52,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:52,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:52,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:52,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:52,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:52,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:52,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:52,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:52,996 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:52,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 146 treesize of output 124 [2022-11-16 12:00:53,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:53,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:53,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:53,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:53,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:00:53,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:53,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:53,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:53,295 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:53,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 146 treesize of output 124 [2022-11-16 12:00:53,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:00:53,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:53,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:53,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:53,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:53,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:53,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:53,807 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:53,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 129 treesize of output 110 [2022-11-16 12:00:54,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:54,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:54,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:54,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:54,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:00:54,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:54,251 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:54,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 112 treesize of output 96 [2022-11-16 12:00:54,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:54,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:54,627 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:00:54,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:54,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:54,638 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:54,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 95 treesize of output 82 [2022-11-16 12:00:54,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:54,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:54,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:54,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:00:54,985 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:54,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 68 [2022-11-16 12:00:55,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:00:55,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:55,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:55,462 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:55,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 54 [2022-11-16 12:00:55,831 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:55,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 32 [2022-11-16 12:00:56,015 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:56,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2022-11-16 12:00:58,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 8 proven. 1828 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-16 12:00:58,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:02:22,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 592 proven. 1141 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-11-16 12:02:22,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393251657] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:02:22,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:02:22,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 84, 72] total 164 [2022-11-16 12:02:22,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125996951] [2022-11-16 12:02:22,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:02:22,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2022-11-16 12:02:22,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:22,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2022-11-16 12:02:22,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1345, Invalid=25362, Unknown=25, NotChecked=0, Total=26732 [2022-11-16 12:02:22,382 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand has 164 states, 161 states have (on average 1.813664596273292) internal successors, (292), 160 states have internal predecessors, (292), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-16 12:12:23,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:23,498 INFO L93 Difference]: Finished difference Result 1148 states and 1539 transitions. [2022-11-16 12:12:23,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 698 states. [2022-11-16 12:12:23,499 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 161 states have (on average 1.813664596273292) internal successors, (292), 160 states have internal predecessors, (292), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) Word has length 186 [2022-11-16 12:12:23,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:23,513 INFO L225 Difference]: With dead ends: 1148 [2022-11-16 12:12:23,514 INFO L226 Difference]: Without dead ends: 1053 [2022-11-16 12:12:23,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1046 GetRequests, 267 SyntacticMatches, 4 SemanticMatches, 775 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235023 ImplicationChecksByTransitivity, 676.5s TimeCoverageRelationStatistics Valid=22669, Invalid=580159, Unknown=124, NotChecked=0, Total=602952 [2022-11-16 12:12:23,552 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1624 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 7751 mSolverCounterSat, 677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 30647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 7751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22219 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:23,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 2713 Invalid, 30647 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [677 Valid, 7751 Invalid, 0 Unknown, 22219 Unchecked, 12.2s Time] [2022-11-16 12:12:23,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2022-11-16 12:12:23,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 603. [2022-11-16 12:12:23,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 580 states have (on average 1.236206896551724) internal successors, (717), 589 states have internal predecessors, (717), 10 states have call successors, (10), 3 states have call predecessors, (10), 12 states have return successors, (68), 10 states have call predecessors, (68), 10 states have call successors, (68) [2022-11-16 12:12:23,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 795 transitions. [2022-11-16 12:12:23,703 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 795 transitions. Word has length 186 [2022-11-16 12:12:23,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:23,705 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 795 transitions. [2022-11-16 12:12:23,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 161 states have (on average 1.813664596273292) internal successors, (292), 160 states have internal predecessors, (292), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-16 12:12:23,707 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 795 transitions. [2022-11-16 12:12:23,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-16 12:12:23,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:23,718 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 28, 10, 10, 9, 9, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:12:23,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:12:23,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 12:12:23,925 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:23,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:23,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1427363051, now seen corresponding path program 1 times [2022-11-16 12:12:23,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:23,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363376006] [2022-11-16 12:12:23,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:23,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:33,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:12:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:38,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 12:12:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:40,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-16 12:12:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:41,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 3 proven. 1987 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-16 12:12:41,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:41,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363376006] [2022-11-16 12:12:41,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363376006] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:12:41,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343134116] [2022-11-16 12:12:41,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:41,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:41,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:41,872 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:41,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37988449-c512-4d4d-ad34-934f32157f7c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:12:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:42,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 284 conjunts are in the unsatisfiable core [2022-11-16 12:12:42,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:42,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 12:12:58,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:12:58,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:12:58,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:12:58,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:12:58,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:12:58,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:12:58,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:12:58,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:12:58,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:12:58,141 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:12:58,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 204 treesize of output 148 [2022-11-16 12:13:22,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:22,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:22,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:22,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:22,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:22,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:22,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:22,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:22,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:22,847 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:13:22,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 188 treesize of output 147 [2022-11-16 12:13:24,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:24,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:24,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:24,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:24,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:24,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:24,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:24,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:24,211 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:13:24,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 175 treesize of output 135 [2022-11-16 12:13:24,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:24,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:24,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:24,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:24,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:24,941 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:24,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:24,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:24,953 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:13:24,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 175 treesize of output 135 [2022-11-16 12:13:26,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:26,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:26,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:26,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:26,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:26,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:26,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:26,179 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:13:26,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 158 treesize of output 121 [2022-11-16 12:13:27,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:27,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:27,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:27,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:27,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:27,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:27,318 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:13:27,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 141 treesize of output 107 [2022-11-16 12:13:28,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:28,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:28,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:28,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:28,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:28,489 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:13:28,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 124 treesize of output 93 [2022-11-16 12:13:29,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:29,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:29,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:29,563 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:29,567 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:13:29,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 107 treesize of output 79 [2022-11-16 12:13:30,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:30,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:30,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:30,646 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:13:30,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 65 [2022-11-16 12:13:31,538 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:13:31,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 40 [2022-11-16 12:13:32,021 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:13:32,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 38 [2022-11-16 12:13:37,858 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:13:37,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 50 [2022-11-16 12:13:38,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 1 proven. 2022 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:13:38,855 INFO L328 TraceCheckSpWp]: Computing backward predicates...