./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --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 ce3fb29712e91707982cc1d90cd5fa002213aad836fd0a7fc53e12556da2c4fe --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 19:49:35,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 19:49:35,631 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 19:49:35,643 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 19:49:35,646 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 19:49:35,685 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 19:49:35,686 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 19:49:35,686 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 19:49:35,687 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 19:49:35,687 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 19:49:35,688 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 19:49:35,689 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 19:49:35,689 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 19:49:35,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 19:49:35,689 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 19:49:35,689 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 19:49:35,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 19:49:35,690 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 19:49:35,690 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 19:49:35,690 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 19:49:35,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 19:49:35,691 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 19:49:35,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 19:49:35,691 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 19:49:35,691 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 19:49:35,691 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 19:49:35,691 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 19:49:35,691 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 19:49:35,692 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 19:49:35,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:49:35,692 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:49:35,692 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:49:35,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:49:35,693 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 19:49:35,693 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:49:35,693 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:49:35,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:49:35,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:49:35,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 19:49:35,694 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 19:49:35,694 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 19:49:35,694 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 19:49:35,694 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 19:49:35,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 19:49:35,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 19:49:35,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 19:49:35,695 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 19:49:35,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 19:49:35,695 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> ce3fb29712e91707982cc1d90cd5fa002213aad836fd0a7fc53e12556da2c4fe [2024-11-27 19:49:36,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 19:49:36,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 19:49:36,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 19:49:36,035 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 19:49:36,036 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 19:49:36,038 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c [2024-11-27 19:49:39,033 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/data/0088fc221/c42e9ed4ce2e42e6823dd548f08b7174/FLAG84d82e6a9 [2024-11-27 19:49:39,757 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 19:49:39,757 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c [2024-11-27 19:49:39,805 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/data/0088fc221/c42e9ed4ce2e42e6823dd548f08b7174/FLAG84d82e6a9 [2024-11-27 19:49:39,826 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/data/0088fc221/c42e9ed4ce2e42e6823dd548f08b7174 [2024-11-27 19:49:39,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 19:49:39,832 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 19:49:39,835 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 19:49:39,835 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 19:49:39,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 19:49:39,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:49:39" (1/1) ... [2024-11-27 19:49:39,842 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377c8b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:39, skipping insertion in model container [2024-11-27 19:49:39,844 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:49:39" (1/1) ... [2024-11-27 19:49:39,995 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 19:49:40,387 WARN L250 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_72a9f264-6d1a-472d-9299-91ab0a5da655/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c[6450,6463] [2024-11-27 19:49:40,458 WARN L250 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_72a9f264-6d1a-472d-9299-91ab0a5da655/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c[9267,9280] [2024-11-27 19:49:41,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:49:41,337 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 19:49:41,377 WARN L250 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_72a9f264-6d1a-472d-9299-91ab0a5da655/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c[6450,6463] [2024-11-27 19:49:41,384 WARN L250 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_72a9f264-6d1a-472d-9299-91ab0a5da655/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c[9267,9280] [2024-11-27 19:49:41,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:49:41,954 INFO L204 MainTranslator]: Completed translation [2024-11-27 19:49:41,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:41 WrapperNode [2024-11-27 19:49:41,956 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 19:49:41,957 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 19:49:41,957 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 19:49:41,958 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 19:49:41,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:41" (1/1) ... [2024-11-27 19:49:42,031 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:41" (1/1) ... [2024-11-27 19:49:42,623 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4981 [2024-11-27 19:49:42,623 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 19:49:42,624 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 19:49:42,624 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 19:49:42,625 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 19:49:42,635 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:41" (1/1) ... [2024-11-27 19:49:42,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:41" (1/1) ... [2024-11-27 19:49:42,715 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:41" (1/1) ... [2024-11-27 19:49:42,947 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 19:49:42,951 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:41" (1/1) ... [2024-11-27 19:49:42,955 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:41" (1/1) ... [2024-11-27 19:49:43,204 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:41" (1/1) ... [2024-11-27 19:49:43,220 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:41" (1/1) ... [2024-11-27 19:49:43,269 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:41" (1/1) ... [2024-11-27 19:49:43,337 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:41" (1/1) ... [2024-11-27 19:49:43,359 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:41" (1/1) ... [2024-11-27 19:49:43,564 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 19:49:43,566 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 19:49:43,566 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 19:49:43,566 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 19:49:43,568 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:41" (1/1) ... [2024-11-27 19:49:43,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:49:43,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:43,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 19:49:43,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 19:49:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 19:49:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 19:49:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 19:49:43,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 19:49:43,753 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 19:49:43,754 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 19:49:50,002 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-11-27 19:49:50,002 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 19:49:50,046 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 19:49:50,046 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 19:49:50,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:49:50 BoogieIcfgContainer [2024-11-27 19:49:50,047 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 19:49:50,049 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 19:49:50,049 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 19:49:50,055 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 19:49:50,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 07:49:39" (1/3) ... [2024-11-27 19:49:50,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213d4fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:49:50, skipping insertion in model container [2024-11-27 19:49:50,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:41" (2/3) ... [2024-11-27 19:49:50,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213d4fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:49:50, skipping insertion in model container [2024-11-27 19:49:50,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:49:50" (3/3) ... [2024-11-27 19:49:50,058 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c [2024-11-27 19:49:50,076 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 19:49:50,079 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c that has 1 procedures, 874 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-27 19:49:50,188 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 19:49:50,203 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@1d50ec6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 19:49:50,203 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-27 19:49:50,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:50,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-27 19:49:50,222 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:50,223 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:50,223 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:50,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:50,231 INFO L85 PathProgramCache]: Analyzing trace with hash -934405548, now seen corresponding path program 1 times [2024-11-27 19:49:50,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:50,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888273970] [2024-11-27 19:49:50,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:50,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:50,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:49:50,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:50,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888273970] [2024-11-27 19:49:50,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888273970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:50,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:50,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 19:49:50,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537406148] [2024-11-27 19:49:50,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:50,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 19:49:50,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:50,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 19:49:50,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 19:49:50,549 INFO L87 Difference]: Start difference. First operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:50,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:50,677 INFO L93 Difference]: Finished difference Result 1724 states and 3278 transitions. [2024-11-27 19:49:50,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 19:49:50,679 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-27 19:49:50,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:50,704 INFO L225 Difference]: With dead ends: 1724 [2024-11-27 19:49:50,704 INFO L226 Difference]: Without dead ends: 808 [2024-11-27 19:49:50,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 19:49:50,716 INFO L435 NwaCegarLoop]: 1591 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, 1591 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 [2024-11-27 19:49:50,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:50,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-27 19:49:50,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-27 19:49:50,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8945409429280398) internal successors, (1527), 807 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:50,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1527 transitions. [2024-11-27 19:49:50,829 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1527 transitions. Word has length 20 [2024-11-27 19:49:50,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:50,829 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1527 transitions. [2024-11-27 19:49:50,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:50,830 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1527 transitions. [2024-11-27 19:49:50,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-27 19:49:50,831 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:50,831 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:50,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 19:49:50,833 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:50,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:50,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1945522798, now seen corresponding path program 1 times [2024-11-27 19:49:50,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:50,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192175161] [2024-11-27 19:49:50,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:50,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:49:51,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:51,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192175161] [2024-11-27 19:49:51,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192175161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:51,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:51,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:49:51,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52772731] [2024-11-27 19:49:51,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:51,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:49:51,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:51,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:49:51,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:49:51,167 INFO L87 Difference]: Start difference. First operand 808 states and 1527 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:51,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:51,340 INFO L93 Difference]: Finished difference Result 844 states and 1581 transitions. [2024-11-27 19:49:51,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:49:51,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-27 19:49:51,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:51,348 INFO L225 Difference]: With dead ends: 844 [2024-11-27 19:49:51,349 INFO L226 Difference]: Without dead ends: 808 [2024-11-27 19:49:51,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:49:51,350 INFO L435 NwaCegarLoop]: 1525 mSDtfsCounter, 0 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:51,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6079 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:49:51,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-27 19:49:51,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-27 19:49:51,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8746898263027296) internal successors, (1511), 807 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1511 transitions. [2024-11-27 19:49:51,401 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1511 transitions. Word has length 20 [2024-11-27 19:49:51,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:51,401 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1511 transitions. [2024-11-27 19:49:51,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:51,401 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1511 transitions. [2024-11-27 19:49:51,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-27 19:49:51,402 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:51,402 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:51,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 19:49:51,402 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:51,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:51,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1765575147, now seen corresponding path program 1 times [2024-11-27 19:49:51,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:51,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590912677] [2024-11-27 19:49:51,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:51,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:51,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:49:51,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:51,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590912677] [2024-11-27 19:49:51,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590912677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:51,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:51,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 19:49:51,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504685167] [2024-11-27 19:49:51,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:51,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:49:51,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:51,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:49:51,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:49:51,585 INFO L87 Difference]: Start difference. First operand 808 states and 1511 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:56,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:56,764 INFO L93 Difference]: Finished difference Result 2312 states and 4384 transitions. [2024-11-27 19:49:56,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:49:56,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-27 19:49:56,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:56,775 INFO L225 Difference]: With dead ends: 2312 [2024-11-27 19:49:56,775 INFO L226 Difference]: Without dead ends: 1559 [2024-11-27 19:49:56,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:49:56,779 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 917 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:56,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 187 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-27 19:49:56,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2024-11-27 19:49:56,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1559. [2024-11-27 19:49:56,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1557 states have (on average 1.8304431599229287) internal successors, (2850), 1558 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:56,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2850 transitions. [2024-11-27 19:49:56,845 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2850 transitions. Word has length 24 [2024-11-27 19:49:56,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:56,846 INFO L471 AbstractCegarLoop]: Abstraction has 1559 states and 2850 transitions. [2024-11-27 19:49:56,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:56,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2850 transitions. [2024-11-27 19:49:56,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-27 19:49:56,850 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:56,850 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:56,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 19:49:56,851 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:56,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:56,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1226597962, now seen corresponding path program 1 times [2024-11-27 19:49:56,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:56,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425113686] [2024-11-27 19:49:56,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:56,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:49:57,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:57,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425113686] [2024-11-27 19:49:57,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425113686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:57,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:57,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:49:57,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887181051] [2024-11-27 19:49:57,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:57,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:49:57,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:57,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:49:57,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:49:57,048 INFO L87 Difference]: Start difference. First operand 1559 states and 2850 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:57,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:57,201 INFO L93 Difference]: Finished difference Result 1751 states and 3150 transitions. [2024-11-27 19:49:57,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:49:57,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-27 19:49:57,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:57,209 INFO L225 Difference]: With dead ends: 1751 [2024-11-27 19:49:57,209 INFO L226 Difference]: Without dead ends: 1719 [2024-11-27 19:49:57,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-27 19:49:57,212 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 4682 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4682 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:57,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4682 Valid, 1758 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:49:57,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2024-11-27 19:49:57,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1589. [2024-11-27 19:49:57,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1587 states have (on average 1.8254568367989918) internal successors, (2897), 1588 states have internal predecessors, (2897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2897 transitions. [2024-11-27 19:49:57,268 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2897 transitions. Word has length 35 [2024-11-27 19:49:57,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:57,269 INFO L471 AbstractCegarLoop]: Abstraction has 1589 states and 2897 transitions. [2024-11-27 19:49:57,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:57,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2897 transitions. [2024-11-27 19:49:57,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-27 19:49:57,273 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:57,273 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:57,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 19:49:57,273 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:57,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:57,275 INFO L85 PathProgramCache]: Analyzing trace with hash 523901274, now seen corresponding path program 1 times [2024-11-27 19:49:57,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:57,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703046502] [2024-11-27 19:49:57,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:57,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:57,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:49:57,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:57,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703046502] [2024-11-27 19:49:57,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703046502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:57,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:57,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:49:57,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053987094] [2024-11-27 19:49:57,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:57,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:49:57,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:57,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:49:57,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:49:57,427 INFO L87 Difference]: Start difference. First operand 1589 states and 2897 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:57,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:57,486 INFO L93 Difference]: Finished difference Result 1702 states and 3072 transitions. [2024-11-27 19:49:57,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:49:57,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-27 19:49:57,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:57,495 INFO L225 Difference]: With dead ends: 1702 [2024-11-27 19:49:57,496 INFO L226 Difference]: Without dead ends: 1640 [2024-11-27 19:49:57,497 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:49:57,498 INFO L435 NwaCegarLoop]: 1507 mSDtfsCounter, 1468 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:57,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1550 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:57,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2024-11-27 19:49:57,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1636. [2024-11-27 19:49:57,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1634 states have (on average 1.8157894736842106) internal successors, (2967), 1635 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:57,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2967 transitions. [2024-11-27 19:49:57,560 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2967 transitions. Word has length 37 [2024-11-27 19:49:57,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:57,560 INFO L471 AbstractCegarLoop]: Abstraction has 1636 states and 2967 transitions. [2024-11-27 19:49:57,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:57,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2967 transitions. [2024-11-27 19:49:57,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-27 19:49:57,562 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:57,563 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:57,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 19:49:57,564 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:57,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:57,564 INFO L85 PathProgramCache]: Analyzing trace with hash 590394786, now seen corresponding path program 1 times [2024-11-27 19:49:57,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:57,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128399111] [2024-11-27 19:49:57,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:57,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:49:57,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:57,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128399111] [2024-11-27 19:49:57,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128399111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:57,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:57,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:49:57,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945877987] [2024-11-27 19:49:57,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:57,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:49:57,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:57,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:49:57,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:49:57,783 INFO L87 Difference]: Start difference. First operand 1636 states and 2967 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:57,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:57,884 INFO L93 Difference]: Finished difference Result 1747 states and 3135 transitions. [2024-11-27 19:49:57,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:49:57,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-27 19:49:57,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:57,892 INFO L225 Difference]: With dead ends: 1747 [2024-11-27 19:49:57,892 INFO L226 Difference]: Without dead ends: 1638 [2024-11-27 19:49:57,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:49:57,893 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 2952 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:57,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2952 Valid, 1601 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:57,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2024-11-27 19:49:57,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1636. [2024-11-27 19:49:57,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1634 states have (on average 1.8145654834761322) internal successors, (2965), 1635 states have internal predecessors, (2965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:57,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2965 transitions. [2024-11-27 19:49:57,945 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2965 transitions. Word has length 37 [2024-11-27 19:49:57,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:57,945 INFO L471 AbstractCegarLoop]: Abstraction has 1636 states and 2965 transitions. [2024-11-27 19:49:57,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:57,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2965 transitions. [2024-11-27 19:49:57,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-27 19:49:57,946 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:57,946 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:57,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 19:49:57,947 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:57,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:57,947 INFO L85 PathProgramCache]: Analyzing trace with hash 707645968, now seen corresponding path program 1 times [2024-11-27 19:49:57,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:57,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422447838] [2024-11-27 19:49:57,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:57,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:58,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:49:58,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:58,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422447838] [2024-11-27 19:49:58,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422447838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:58,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:58,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 19:49:58,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290666142] [2024-11-27 19:49:58,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:58,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 19:49:58,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:58,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 19:49:58,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 19:49:58,248 INFO L87 Difference]: Start difference. First operand 1636 states and 2965 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:58,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:58,350 INFO L93 Difference]: Finished difference Result 1644 states and 2974 transitions. [2024-11-27 19:49:58,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 19:49:58,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-27 19:49:58,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:58,359 INFO L225 Difference]: With dead ends: 1644 [2024-11-27 19:49:58,359 INFO L226 Difference]: Without dead ends: 1642 [2024-11-27 19:49:58,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 19:49:58,361 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 0 mSDsluCounter, 9017 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10522 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:58,362 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10522 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:58,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2024-11-27 19:49:58,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1642. [2024-11-27 19:49:58,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1640 states have (on average 1.8109756097560976) internal successors, (2970), 1641 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:58,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2970 transitions. [2024-11-27 19:49:58,407 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2970 transitions. Word has length 38 [2024-11-27 19:49:58,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:58,408 INFO L471 AbstractCegarLoop]: Abstraction has 1642 states and 2970 transitions. [2024-11-27 19:49:58,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:58,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2970 transitions. [2024-11-27 19:49:58,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-27 19:49:58,409 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:58,409 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:58,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 19:49:58,410 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:58,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:58,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1903217474, now seen corresponding path program 1 times [2024-11-27 19:49:58,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:58,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566226930] [2024-11-27 19:49:58,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:58,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:49:58,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:58,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566226930] [2024-11-27 19:49:58,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566226930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:58,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:58,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:49:58,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227658644] [2024-11-27 19:49:58,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:58,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:49:58,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:58,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:49:58,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:49:58,509 INFO L87 Difference]: Start difference. First operand 1642 states and 2970 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:58,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:58,550 INFO L93 Difference]: Finished difference Result 1856 states and 3282 transitions. [2024-11-27 19:49:58,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:49:58,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-27 19:49:58,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:58,558 INFO L225 Difference]: With dead ends: 1856 [2024-11-27 19:49:58,559 INFO L226 Difference]: Without dead ends: 1741 [2024-11-27 19:49:58,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:49:58,560 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 1475 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:58,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1587 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:58,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2024-11-27 19:49:58,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1739. [2024-11-27 19:49:58,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1737 states have (on average 1.7887161773172136) internal successors, (3107), 1738 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:58,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 3107 transitions. [2024-11-27 19:49:58,617 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 3107 transitions. Word has length 39 [2024-11-27 19:49:58,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:58,617 INFO L471 AbstractCegarLoop]: Abstraction has 1739 states and 3107 transitions. [2024-11-27 19:49:58,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:58,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 3107 transitions. [2024-11-27 19:49:58,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-27 19:49:58,618 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:58,619 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:58,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 19:49:58,619 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:58,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:58,620 INFO L85 PathProgramCache]: Analyzing trace with hash 122284610, now seen corresponding path program 1 times [2024-11-27 19:49:58,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:58,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486261672] [2024-11-27 19:49:58,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:58,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:58,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:49:58,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:58,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486261672] [2024-11-27 19:49:58,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486261672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:58,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:58,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:49:58,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326753531] [2024-11-27 19:49:58,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:58,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:49:58,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:58,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:49:58,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:49:58,748 INFO L87 Difference]: Start difference. First operand 1739 states and 3107 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:58,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:58,789 INFO L93 Difference]: Finished difference Result 2131 states and 3665 transitions. [2024-11-27 19:49:58,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:49:58,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-27 19:49:58,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:58,798 INFO L225 Difference]: With dead ends: 2131 [2024-11-27 19:49:58,798 INFO L226 Difference]: Without dead ends: 1919 [2024-11-27 19:49:58,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:49:58,800 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 1477 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:58,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1593 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:58,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2024-11-27 19:49:58,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1917. [2024-11-27 19:49:58,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1915 states have (on average 1.7488250652741515) internal successors, (3349), 1916 states have internal predecessors, (3349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:58,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 3349 transitions. [2024-11-27 19:49:58,858 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 3349 transitions. Word has length 39 [2024-11-27 19:49:58,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:58,858 INFO L471 AbstractCegarLoop]: Abstraction has 1917 states and 3349 transitions. [2024-11-27 19:49:58,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:58,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 3349 transitions. [2024-11-27 19:49:58,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-27 19:49:58,859 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:58,859 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:58,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 19:49:58,860 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:58,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:58,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1688735299, now seen corresponding path program 1 times [2024-11-27 19:49:58,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:58,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922840328] [2024-11-27 19:49:58,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:58,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:58,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:49:58,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:58,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922840328] [2024-11-27 19:49:58,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922840328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:58,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:58,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:49:58,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656324314] [2024-11-27 19:49:58,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:58,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:49:58,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:58,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:49:58,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:49:58,913 INFO L87 Difference]: Start difference. First operand 1917 states and 3349 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:58,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:58,957 INFO L93 Difference]: Finished difference Result 2340 states and 3955 transitions. [2024-11-27 19:49:58,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:49:58,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-27 19:49:58,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:58,965 INFO L225 Difference]: With dead ends: 2340 [2024-11-27 19:49:58,966 INFO L226 Difference]: Without dead ends: 2105 [2024-11-27 19:49:58,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:49:58,968 INFO L435 NwaCegarLoop]: 1543 mSDtfsCounter, 1476 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:58,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:58,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2024-11-27 19:49:59,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 2103. [2024-11-27 19:49:59,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2103 states, 2101 states have (on average 1.714897667777249) internal successors, (3603), 2102 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:59,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 3603 transitions. [2024-11-27 19:49:59,031 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 3603 transitions. Word has length 41 [2024-11-27 19:49:59,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:59,031 INFO L471 AbstractCegarLoop]: Abstraction has 2103 states and 3603 transitions. [2024-11-27 19:49:59,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:59,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 3603 transitions. [2024-11-27 19:49:59,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-27 19:49:59,032 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:59,033 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:59,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 19:49:59,033 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:59,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:59,034 INFO L85 PathProgramCache]: Analyzing trace with hash 923003988, now seen corresponding path program 1 times [2024-11-27 19:49:59,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:59,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096490506] [2024-11-27 19:49:59,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:59,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 19:49:59,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:59,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096490506] [2024-11-27 19:49:59,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096490506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:59,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:59,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:49:59,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985464372] [2024-11-27 19:49:59,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:59,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:49:59,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:59,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:49:59,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:49:59,194 INFO L87 Difference]: Start difference. First operand 2103 states and 3603 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:59,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:59,320 INFO L93 Difference]: Finished difference Result 3959 states and 6183 transitions. [2024-11-27 19:49:59,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:49:59,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-27 19:49:59,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:59,333 INFO L225 Difference]: With dead ends: 3959 [2024-11-27 19:49:59,334 INFO L226 Difference]: Without dead ends: 3385 [2024-11-27 19:49:59,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:49:59,336 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 3061 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3061 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:59,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3061 Valid, 3147 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:59,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3385 states. [2024-11-27 19:49:59,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3385 to 2675. [2024-11-27 19:49:59,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2675 states, 2673 states have (on average 1.6427235316124205) internal successors, (4391), 2674 states have internal predecessors, (4391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:59,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2675 states to 2675 states and 4391 transitions. [2024-11-27 19:49:59,426 INFO L78 Accepts]: Start accepts. Automaton has 2675 states and 4391 transitions. Word has length 54 [2024-11-27 19:49:59,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:59,426 INFO L471 AbstractCegarLoop]: Abstraction has 2675 states and 4391 transitions. [2024-11-27 19:49:59,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:59,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2675 states and 4391 transitions. [2024-11-27 19:49:59,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-27 19:49:59,428 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:59,428 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:59,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 19:49:59,429 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:59,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:59,429 INFO L85 PathProgramCache]: Analyzing trace with hash -857928876, now seen corresponding path program 1 times [2024-11-27 19:49:59,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:59,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668109188] [2024-11-27 19:49:59,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:59,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:59,600 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 19:49:59,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:59,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668109188] [2024-11-27 19:49:59,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668109188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:59,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:59,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:49:59,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308915383] [2024-11-27 19:49:59,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:59,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:49:59,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:59,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:49:59,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:49:59,604 INFO L87 Difference]: Start difference. First operand 2675 states and 4391 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:59,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:59,766 INFO L93 Difference]: Finished difference Result 4531 states and 6971 transitions. [2024-11-27 19:49:59,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:49:59,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-27 19:49:59,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:59,786 INFO L225 Difference]: With dead ends: 4531 [2024-11-27 19:49:59,786 INFO L226 Difference]: Without dead ends: 3957 [2024-11-27 19:49:59,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:49:59,793 INFO L435 NwaCegarLoop]: 1552 mSDtfsCounter, 3049 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3049 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:59,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3049 Valid, 3170 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:49:59,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2024-11-27 19:49:59,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 3535. [2024-11-27 19:49:59,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 3533 states have (on average 1.5745825077837532) internal successors, (5563), 3534 states have internal predecessors, (5563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:59,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 5563 transitions. [2024-11-27 19:49:59,904 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 5563 transitions. Word has length 54 [2024-11-27 19:49:59,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:59,905 INFO L471 AbstractCegarLoop]: Abstraction has 3535 states and 5563 transitions. [2024-11-27 19:49:59,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:59,905 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 5563 transitions. [2024-11-27 19:49:59,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-27 19:49:59,906 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:59,906 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:59,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 19:49:59,907 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:59,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:59,908 INFO L85 PathProgramCache]: Analyzing trace with hash 894361900, now seen corresponding path program 1 times [2024-11-27 19:49:59,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:59,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439328173] [2024-11-27 19:49:59,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:59,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:00,039 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:00,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:00,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439328173] [2024-11-27 19:50:00,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439328173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:00,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:00,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:00,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836009830] [2024-11-27 19:50:00,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:00,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:00,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:00,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:00,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:00,042 INFO L87 Difference]: Start difference. First operand 3535 states and 5563 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:00,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:00,107 INFO L93 Difference]: Finished difference Result 5011 states and 7626 transitions. [2024-11-27 19:50:00,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:00,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-27 19:50:00,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:00,125 INFO L225 Difference]: With dead ends: 5011 [2024-11-27 19:50:00,125 INFO L226 Difference]: Without dead ends: 3005 [2024-11-27 19:50:00,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:00,133 INFO L435 NwaCegarLoop]: 1535 mSDtfsCounter, 34 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3031 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 [2024-11-27 19:50:00,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3031 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:00,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2024-11-27 19:50:00,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 3003. [2024-11-27 19:50:00,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 3001 states have (on average 1.611129623458847) internal successors, (4835), 3002 states have internal predecessors, (4835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:00,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 4835 transitions. [2024-11-27 19:50:00,338 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 4835 transitions. Word has length 56 [2024-11-27 19:50:00,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:00,338 INFO L471 AbstractCegarLoop]: Abstraction has 3003 states and 4835 transitions. [2024-11-27 19:50:00,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:00,338 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 4835 transitions. [2024-11-27 19:50:00,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-27 19:50:00,339 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:00,339 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:00,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 19:50:00,344 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:00,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:00,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1218909775, now seen corresponding path program 1 times [2024-11-27 19:50:00,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:00,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487932254] [2024-11-27 19:50:00,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:00,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 19:50:00,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:00,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487932254] [2024-11-27 19:50:00,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487932254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:00,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:00,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:50:00,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613568422] [2024-11-27 19:50:00,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:00,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:50:00,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:00,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:50:00,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:00,669 INFO L87 Difference]: Start difference. First operand 3003 states and 4835 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:00,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:00,864 INFO L93 Difference]: Finished difference Result 4259 states and 6591 transitions. [2024-11-27 19:50:00,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:50:00,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-27 19:50:00,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:00,875 INFO L225 Difference]: With dead ends: 4259 [2024-11-27 19:50:00,875 INFO L226 Difference]: Without dead ends: 3841 [2024-11-27 19:50:00,877 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:50:00,878 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 3049 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3049 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:00,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3049 Valid, 3155 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:00,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2024-11-27 19:50:00,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 3419. [2024-11-27 19:50:00,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3419 states, 3417 states have (on average 1.5835528241147205) internal successors, (5411), 3418 states have internal predecessors, (5411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 5411 transitions. [2024-11-27 19:50:00,991 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 5411 transitions. Word has length 56 [2024-11-27 19:50:00,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:00,992 INFO L471 AbstractCegarLoop]: Abstraction has 3419 states and 5411 transitions. [2024-11-27 19:50:00,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:00,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 5411 transitions. [2024-11-27 19:50:00,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-27 19:50:00,995 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:00,995 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:00,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 19:50:00,995 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:00,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:00,997 INFO L85 PathProgramCache]: Analyzing trace with hash -877348108, now seen corresponding path program 1 times [2024-11-27 19:50:00,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:00,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097254191] [2024-11-27 19:50:00,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:00,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:01,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:01,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097254191] [2024-11-27 19:50:01,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097254191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:01,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:01,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:01,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870078915] [2024-11-27 19:50:01,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:01,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:01,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:01,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:01,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:01,131 INFO L87 Difference]: Start difference. First operand 3419 states and 5411 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:01,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:01,179 INFO L93 Difference]: Finished difference Result 4359 states and 6709 transitions. [2024-11-27 19:50:01,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:01,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-27 19:50:01,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:01,187 INFO L225 Difference]: With dead ends: 4359 [2024-11-27 19:50:01,188 INFO L226 Difference]: Without dead ends: 2485 [2024-11-27 19:50:01,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:01,193 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3016 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 [2024-11-27 19:50:01,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3016 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:01,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2024-11-27 19:50:01,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2483. [2024-11-27 19:50:01,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 2481 states have (on average 1.6513502619911327) internal successors, (4097), 2482 states have internal predecessors, (4097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:01,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 4097 transitions. [2024-11-27 19:50:01,260 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 4097 transitions. Word has length 57 [2024-11-27 19:50:01,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:01,260 INFO L471 AbstractCegarLoop]: Abstraction has 2483 states and 4097 transitions. [2024-11-27 19:50:01,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:01,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 4097 transitions. [2024-11-27 19:50:01,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-27 19:50:01,261 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:01,262 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:01,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 19:50:01,262 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:01,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:01,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1226511174, now seen corresponding path program 1 times [2024-11-27 19:50:01,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:01,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518579004] [2024-11-27 19:50:01,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:01,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:01,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:01,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518579004] [2024-11-27 19:50:01,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518579004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:01,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:01,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:01,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328875365] [2024-11-27 19:50:01,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:01,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:01,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:01,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:01,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:01,382 INFO L87 Difference]: Start difference. First operand 2483 states and 4097 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:01,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:01,423 INFO L93 Difference]: Finished difference Result 2955 states and 4738 transitions. [2024-11-27 19:50:01,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:01,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-27 19:50:01,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:01,430 INFO L225 Difference]: With dead ends: 2955 [2024-11-27 19:50:01,430 INFO L226 Difference]: Without dead ends: 2017 [2024-11-27 19:50:01,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:01,434 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 26 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3001 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 [2024-11-27 19:50:01,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:01,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2024-11-27 19:50:01,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 2015. [2024-11-27 19:50:01,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 2013 states have (on average 1.7133631395926479) internal successors, (3449), 2014 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:01,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 3449 transitions. [2024-11-27 19:50:01,490 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 3449 transitions. Word has length 59 [2024-11-27 19:50:01,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:01,490 INFO L471 AbstractCegarLoop]: Abstraction has 2015 states and 3449 transitions. [2024-11-27 19:50:01,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:01,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 3449 transitions. [2024-11-27 19:50:01,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-27 19:50:01,492 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:01,492 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:01,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 19:50:01,492 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:01,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:01,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1826022888, now seen corresponding path program 1 times [2024-11-27 19:50:01,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:01,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771877084] [2024-11-27 19:50:01,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:01,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:03,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:03,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771877084] [2024-11-27 19:50:03,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771877084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:03,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796905298] [2024-11-27 19:50:03,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:03,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:03,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:03,797 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:03,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 19:50:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:03,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 19:50:03,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:04,298 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 19:50:04,298 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:04,590 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 19:50:04,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796905298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:04,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:04,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-11-27 19:50:04,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953458052] [2024-11-27 19:50:04,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:04,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 19:50:04,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:04,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 19:50:04,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-27 19:50:04,593 INFO L87 Difference]: Start difference. First operand 2015 states and 3449 transitions. Second operand has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:08,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:08,207 INFO L93 Difference]: Finished difference Result 4416 states and 6623 transitions. [2024-11-27 19:50:08,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-27 19:50:08,208 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-27 19:50:08,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:08,218 INFO L225 Difference]: With dead ends: 4416 [2024-11-27 19:50:08,218 INFO L226 Difference]: Without dead ends: 3946 [2024-11-27 19:50:08,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=545, Invalid=2535, Unknown=0, NotChecked=0, Total=3080 [2024-11-27 19:50:08,222 INFO L435 NwaCegarLoop]: 1499 mSDtfsCounter, 17260 mSDsluCounter, 7676 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17260 SdHoareTripleChecker+Valid, 9175 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:08,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17260 Valid, 9175 Invalid, 699 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 19:50:08,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2024-11-27 19:50:08,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3912. [2024-11-27 19:50:08,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3912 states, 3910 states have (on average 1.481841432225064) internal successors, (5794), 3911 states have internal predecessors, (5794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:08,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3912 states to 3912 states and 5794 transitions. [2024-11-27 19:50:08,360 INFO L78 Accepts]: Start accepts. Automaton has 3912 states and 5794 transitions. Word has length 61 [2024-11-27 19:50:08,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:08,361 INFO L471 AbstractCegarLoop]: Abstraction has 3912 states and 5794 transitions. [2024-11-27 19:50:08,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:08,361 INFO L276 IsEmpty]: Start isEmpty. Operand 3912 states and 5794 transitions. [2024-11-27 19:50:08,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-27 19:50:08,364 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:08,365 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:08,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 19:50:08,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 19:50:08,566 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:08,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:08,566 INFO L85 PathProgramCache]: Analyzing trace with hash 459765187, now seen corresponding path program 1 times [2024-11-27 19:50:08,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:08,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954393241] [2024-11-27 19:50:08,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:08,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:11,500 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:11,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:11,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954393241] [2024-11-27 19:50:11,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954393241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:11,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790837588] [2024-11-27 19:50:11,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:11,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:11,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:11,504 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:11,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 19:50:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:11,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 19:50:11,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:12,192 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:12,193 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:13,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790837588] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:13,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:13,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-11-27 19:50:13,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695252728] [2024-11-27 19:50:13,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:13,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-27 19:50:13,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:13,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-27 19:50:13,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-11-27 19:50:13,138 INFO L87 Difference]: Start difference. First operand 3912 states and 5794 transitions. Second operand has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:14,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:14,003 INFO L93 Difference]: Finished difference Result 8181 states and 11209 transitions. [2024-11-27 19:50:14,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 19:50:14,003 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-27 19:50:14,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:14,018 INFO L225 Difference]: With dead ends: 8181 [2024-11-27 19:50:14,019 INFO L226 Difference]: Without dead ends: 6222 [2024-11-27 19:50:14,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=287, Invalid=1045, Unknown=0, NotChecked=0, Total=1332 [2024-11-27 19:50:14,024 INFO L435 NwaCegarLoop]: 1495 mSDtfsCounter, 10631 mSDsluCounter, 3253 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10631 SdHoareTripleChecker+Valid, 4748 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:14,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10631 Valid, 4748 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 19:50:14,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6222 states. [2024-11-27 19:50:14,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6222 to 6156. [2024-11-27 19:50:14,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6156 states, 6154 states have (on average 1.3865778355541112) internal successors, (8533), 6155 states have internal predecessors, (8533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:14,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6156 states to 6156 states and 8533 transitions. [2024-11-27 19:50:14,510 INFO L78 Accepts]: Start accepts. Automaton has 6156 states and 8533 transitions. Word has length 62 [2024-11-27 19:50:14,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:14,511 INFO L471 AbstractCegarLoop]: Abstraction has 6156 states and 8533 transitions. [2024-11-27 19:50:14,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:14,511 INFO L276 IsEmpty]: Start isEmpty. Operand 6156 states and 8533 transitions. [2024-11-27 19:50:14,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-27 19:50:14,517 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:14,517 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:14,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 19:50:14,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 19:50:14,718 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:14,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:14,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1147902773, now seen corresponding path program 1 times [2024-11-27 19:50:14,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:14,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296902893] [2024-11-27 19:50:14,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:14,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:15,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:15,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296902893] [2024-11-27 19:50:15,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296902893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:15,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327778890] [2024-11-27 19:50:15,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:15,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:15,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:15,218 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:15,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 19:50:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:15,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 19:50:15,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:16,331 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:16,331 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:17,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327778890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:17,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:17,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-27 19:50:17,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458904302] [2024-11-27 19:50:17,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:17,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-27 19:50:17,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:17,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-27 19:50:17,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-11-27 19:50:17,566 INFO L87 Difference]: Start difference. First operand 6156 states and 8533 transitions. Second operand has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:21,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:21,793 INFO L93 Difference]: Finished difference Result 16403 states and 21329 transitions. [2024-11-27 19:50:21,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-27 19:50:21,794 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-27 19:50:21,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:21,826 INFO L225 Difference]: With dead ends: 16403 [2024-11-27 19:50:21,827 INFO L226 Difference]: Without dead ends: 12305 [2024-11-27 19:50:21,835 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1214, Invalid=5592, Unknown=0, NotChecked=0, Total=6806 [2024-11-27 19:50:21,836 INFO L435 NwaCegarLoop]: 1508 mSDtfsCounter, 14006 mSDsluCounter, 15506 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14006 SdHoareTripleChecker+Valid, 17014 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:21,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14006 Valid, 17014 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 19:50:21,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12305 states. [2024-11-27 19:50:22,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12305 to 8355. [2024-11-27 19:50:22,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8355 states, 8353 states have (on average 1.338680713516102) internal successors, (11182), 8354 states have internal predecessors, (11182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:22,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8355 states to 8355 states and 11182 transitions. [2024-11-27 19:50:22,290 INFO L78 Accepts]: Start accepts. Automaton has 8355 states and 11182 transitions. Word has length 62 [2024-11-27 19:50:22,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:22,290 INFO L471 AbstractCegarLoop]: Abstraction has 8355 states and 11182 transitions. [2024-11-27 19:50:22,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:22,291 INFO L276 IsEmpty]: Start isEmpty. Operand 8355 states and 11182 transitions. [2024-11-27 19:50:22,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-27 19:50:22,292 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:22,292 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:22,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 19:50:22,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:22,497 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:22,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:22,497 INFO L85 PathProgramCache]: Analyzing trace with hash 807603108, now seen corresponding path program 1 times [2024-11-27 19:50:22,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:22,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864305954] [2024-11-27 19:50:22,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:22,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:23,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:23,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864305954] [2024-11-27 19:50:23,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864305954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:23,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867001381] [2024-11-27 19:50:23,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:23,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:23,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:23,004 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:23,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 19:50:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:23,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 19:50:23,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:25,421 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:25,422 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:26,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867001381] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:26,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:26,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 26 [2024-11-27 19:50:26,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325062328] [2024-11-27 19:50:26,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:26,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-27 19:50:26,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:26,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-27 19:50:26,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2024-11-27 19:50:26,552 INFO L87 Difference]: Start difference. First operand 8355 states and 11182 transitions. Second operand has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:28,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:28,880 INFO L93 Difference]: Finished difference Result 17081 states and 22024 transitions. [2024-11-27 19:50:28,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-27 19:50:28,881 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-27 19:50:28,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:28,906 INFO L225 Difference]: With dead ends: 17081 [2024-11-27 19:50:28,907 INFO L226 Difference]: Without dead ends: 11437 [2024-11-27 19:50:28,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=637, Invalid=2015, Unknown=0, NotChecked=0, Total=2652 [2024-11-27 19:50:28,913 INFO L435 NwaCegarLoop]: 1514 mSDtfsCounter, 23058 mSDsluCounter, 6516 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23058 SdHoareTripleChecker+Valid, 8030 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:28,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23058 Valid, 8030 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:50:28,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11437 states. [2024-11-27 19:50:29,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11437 to 10831. [2024-11-27 19:50:29,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10831 states, 10829 states have (on average 1.3042755563763968) internal successors, (14124), 10830 states have internal predecessors, (14124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:29,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10831 states to 10831 states and 14124 transitions. [2024-11-27 19:50:29,458 INFO L78 Accepts]: Start accepts. Automaton has 10831 states and 14124 transitions. Word has length 63 [2024-11-27 19:50:29,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:29,459 INFO L471 AbstractCegarLoop]: Abstraction has 10831 states and 14124 transitions. [2024-11-27 19:50:29,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:29,459 INFO L276 IsEmpty]: Start isEmpty. Operand 10831 states and 14124 transitions. [2024-11-27 19:50:29,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-27 19:50:29,461 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:29,461 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:29,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 19:50:29,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:29,667 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:29,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:29,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1786741782, now seen corresponding path program 1 times [2024-11-27 19:50:29,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:29,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593019513] [2024-11-27 19:50:29,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:29,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:32,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:32,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593019513] [2024-11-27 19:50:32,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593019513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:32,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139716204] [2024-11-27 19:50:32,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:32,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:32,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:32,133 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:32,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 19:50:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:32,304 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-27 19:50:32,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:35,988 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:35,989 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:37,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139716204] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:37,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:37,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 15] total 51 [2024-11-27 19:50:37,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769864386] [2024-11-27 19:50:37,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:37,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-27 19:50:37,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:37,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-27 19:50:37,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2308, Unknown=0, NotChecked=0, Total=2550 [2024-11-27 19:50:37,988 INFO L87 Difference]: Start difference. First operand 10831 states and 14124 transitions. Second operand has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:05,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:05,869 INFO L93 Difference]: Finished difference Result 21138 states and 26707 transitions. [2024-11-27 19:51:05,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-27 19:51:05,870 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-27 19:51:05,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:05,906 INFO L225 Difference]: With dead ends: 21138 [2024-11-27 19:51:05,906 INFO L226 Difference]: Without dead ends: 17394 [2024-11-27 19:51:05,914 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6022 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=4194, Invalid=16398, Unknown=0, NotChecked=0, Total=20592 [2024-11-27 19:51:05,915 INFO L435 NwaCegarLoop]: 1542 mSDtfsCounter, 26465 mSDsluCounter, 16423 mSDsCounter, 0 mSdLazyCounter, 2222 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26465 SdHoareTripleChecker+Valid, 17965 SdHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:05,915 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26465 Valid, 17965 Invalid, 2360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 2222 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-27 19:51:05,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17394 states. [2024-11-27 19:51:06,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17394 to 13947. [2024-11-27 19:51:06,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13947 states, 13945 states have (on average 1.289709573323772) internal successors, (17985), 13946 states have internal predecessors, (17985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:06,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13947 states to 13947 states and 17985 transitions. [2024-11-27 19:51:06,946 INFO L78 Accepts]: Start accepts. Automaton has 13947 states and 17985 transitions. Word has length 63 [2024-11-27 19:51:06,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:06,947 INFO L471 AbstractCegarLoop]: Abstraction has 13947 states and 17985 transitions. [2024-11-27 19:51:06,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:06,947 INFO L276 IsEmpty]: Start isEmpty. Operand 13947 states and 17985 transitions. [2024-11-27 19:51:06,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-27 19:51:06,949 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:06,949 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:06,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 19:51:07,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-27 19:51:07,150 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:07,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:07,151 INFO L85 PathProgramCache]: Analyzing trace with hash 532152701, now seen corresponding path program 1 times [2024-11-27 19:51:07,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:07,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824563346] [2024-11-27 19:51:07,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:07,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:08,650 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:08,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:08,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824563346] [2024-11-27 19:51:08,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824563346] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:08,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916773360] [2024-11-27 19:51:08,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:08,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:08,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:08,653 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:51:08,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 19:51:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:08,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 19:51:08,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:51:10,181 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:10,181 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:51:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:10,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916773360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:51:10,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:51:10,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 34 [2024-11-27 19:51:10,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444251191] [2024-11-27 19:51:10,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:51:10,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-27 19:51:10,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:10,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-27 19:51:10,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2024-11-27 19:51:10,893 INFO L87 Difference]: Start difference. First operand 13947 states and 17985 transitions. Second operand has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:14,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:14,410 INFO L93 Difference]: Finished difference Result 18807 states and 23911 transitions. [2024-11-27 19:51:14,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-27 19:51:14,413 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-27 19:51:14,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:14,431 INFO L225 Difference]: With dead ends: 18807 [2024-11-27 19:51:14,431 INFO L226 Difference]: Without dead ends: 13060 [2024-11-27 19:51:14,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=822, Invalid=2960, Unknown=0, NotChecked=0, Total=3782 [2024-11-27 19:51:14,439 INFO L435 NwaCegarLoop]: 1517 mSDtfsCounter, 14417 mSDsluCounter, 15499 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14417 SdHoareTripleChecker+Valid, 17016 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:14,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14417 Valid, 17016 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 19:51:14,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13060 states. [2024-11-27 19:51:15,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13060 to 10942. [2024-11-27 19:51:15,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10942 states, 10940 states have (on average 1.3036563071297989) internal successors, (14262), 10941 states have internal predecessors, (14262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:15,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10942 states to 10942 states and 14262 transitions. [2024-11-27 19:51:15,304 INFO L78 Accepts]: Start accepts. Automaton has 10942 states and 14262 transitions. Word has length 64 [2024-11-27 19:51:15,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:15,304 INFO L471 AbstractCegarLoop]: Abstraction has 10942 states and 14262 transitions. [2024-11-27 19:51:15,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:15,304 INFO L276 IsEmpty]: Start isEmpty. Operand 10942 states and 14262 transitions. [2024-11-27 19:51:15,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-27 19:51:15,305 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:15,306 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:15,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 19:51:15,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-27 19:51:15,510 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:15,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:15,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1624666796, now seen corresponding path program 1 times [2024-11-27 19:51:15,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:15,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070287217] [2024-11-27 19:51:15,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:15,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:18,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:18,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070287217] [2024-11-27 19:51:18,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070287217] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:18,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888159520] [2024-11-27 19:51:18,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:18,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:18,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:18,394 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:51:18,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 19:51:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:18,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-27 19:51:18,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:51:19,410 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:19,410 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:51:20,934 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:20,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888159520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:51:20,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:51:20,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 12] total 42 [2024-11-27 19:51:20,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875752401] [2024-11-27 19:51:20,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:51:20,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-27 19:51:20,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:20,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-27 19:51:20,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2024-11-27 19:51:20,937 INFO L87 Difference]: Start difference. First operand 10942 states and 14262 transitions. Second operand has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:31,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:31,935 INFO L93 Difference]: Finished difference Result 17682 states and 22469 transitions. [2024-11-27 19:51:31,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-27 19:51:31,936 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-27 19:51:31,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:31,951 INFO L225 Difference]: With dead ends: 17682 [2024-11-27 19:51:31,951 INFO L226 Difference]: Without dead ends: 12903 [2024-11-27 19:51:31,958 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2078 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=2078, Invalid=7822, Unknown=0, NotChecked=0, Total=9900 [2024-11-27 19:51:31,959 INFO L435 NwaCegarLoop]: 1558 mSDtfsCounter, 15123 mSDsluCounter, 31540 mSDsCounter, 0 mSdLazyCounter, 2455 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15123 SdHoareTripleChecker+Valid, 33098 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:31,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15123 Valid, 33098 Invalid, 2524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 2455 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-27 19:51:31,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12903 states. [2024-11-27 19:51:32,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12903 to 8791. [2024-11-27 19:51:32,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8791 states, 8789 states have (on average 1.3241551939924907) internal successors, (11638), 8790 states have internal predecessors, (11638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:32,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8791 states to 8791 states and 11638 transitions. [2024-11-27 19:51:32,399 INFO L78 Accepts]: Start accepts. Automaton has 8791 states and 11638 transitions. Word has length 65 [2024-11-27 19:51:32,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:32,399 INFO L471 AbstractCegarLoop]: Abstraction has 8791 states and 11638 transitions. [2024-11-27 19:51:32,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:32,400 INFO L276 IsEmpty]: Start isEmpty. Operand 8791 states and 11638 transitions. [2024-11-27 19:51:32,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-27 19:51:32,401 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:32,402 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:32,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 19:51:32,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-27 19:51:32,602 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:32,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:32,603 INFO L85 PathProgramCache]: Analyzing trace with hash -681527881, now seen corresponding path program 1 times [2024-11-27 19:51:32,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:32,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772684654] [2024-11-27 19:51:32,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:32,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:32,798 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:32,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:32,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772684654] [2024-11-27 19:51:32,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772684654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:32,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:32,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:51:32,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388110841] [2024-11-27 19:51:32,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:32,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:51:32,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:32,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:51:32,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:51:32,800 INFO L87 Difference]: Start difference. First operand 8791 states and 11638 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:40,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:40,523 INFO L93 Difference]: Finished difference Result 12548 states and 18528 transitions. [2024-11-27 19:51:40,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:51:40,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-27 19:51:40,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:40,533 INFO L225 Difference]: With dead ends: 12548 [2024-11-27 19:51:40,533 INFO L226 Difference]: Without dead ends: 11044 [2024-11-27 19:51:40,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:40,537 INFO L435 NwaCegarLoop]: 766 mSDtfsCounter, 2303 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4805 mSolverCounterSat, 1138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2303 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 5943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1138 IncrementalHoareTripleChecker+Valid, 4805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:40,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2303 Valid, 786 Invalid, 5943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1138 Valid, 4805 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-27 19:51:40,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11044 states. [2024-11-27 19:51:41,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11044 to 11044. [2024-11-27 19:51:41,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11044 states, 11042 states have (on average 1.2884441224415866) internal successors, (14227), 11043 states have internal predecessors, (14227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:41,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11044 states to 11044 states and 14227 transitions. [2024-11-27 19:51:41,030 INFO L78 Accepts]: Start accepts. Automaton has 11044 states and 14227 transitions. Word has length 93 [2024-11-27 19:51:41,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:41,030 INFO L471 AbstractCegarLoop]: Abstraction has 11044 states and 14227 transitions. [2024-11-27 19:51:41,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:41,030 INFO L276 IsEmpty]: Start isEmpty. Operand 11044 states and 14227 transitions. [2024-11-27 19:51:41,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-27 19:51:41,032 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:41,032 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:41,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-27 19:51:41,032 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:41,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:41,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1176909308, now seen corresponding path program 1 times [2024-11-27 19:51:41,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:41,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579285336] [2024-11-27 19:51:41,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:41,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:41,108 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-27 19:51:41,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:41,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579285336] [2024-11-27 19:51:41,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579285336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:41,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:41,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 19:51:41,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006029426] [2024-11-27 19:51:41,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:41,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:51:41,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:41,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:51:41,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:51:41,110 INFO L87 Difference]: Start difference. First operand 11044 states and 14227 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:45,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:45,562 INFO L93 Difference]: Finished difference Result 15552 states and 21610 transitions. [2024-11-27 19:51:45,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:51:45,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-11-27 19:51:45,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:45,574 INFO L225 Difference]: With dead ends: 15552 [2024-11-27 19:51:45,575 INFO L226 Difference]: Without dead ends: 12546 [2024-11-27 19:51:45,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:51:45,579 INFO L435 NwaCegarLoop]: 539 mSDtfsCounter, 797 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:45,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 546 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-27 19:51:45,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12546 states. [2024-11-27 19:51:46,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12546 to 12546. [2024-11-27 19:51:46,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12546 states, 12544 states have (on average 1.2873883928571428) internal successors, (16149), 12545 states have internal predecessors, (16149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:46,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12546 states to 12546 states and 16149 transitions. [2024-11-27 19:51:46,046 INFO L78 Accepts]: Start accepts. Automaton has 12546 states and 16149 transitions. Word has length 95 [2024-11-27 19:51:46,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:46,047 INFO L471 AbstractCegarLoop]: Abstraction has 12546 states and 16149 transitions. [2024-11-27 19:51:46,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:46,047 INFO L276 IsEmpty]: Start isEmpty. Operand 12546 states and 16149 transitions. [2024-11-27 19:51:46,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-27 19:51:46,049 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:46,049 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:46,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-27 19:51:46,050 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:46,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:46,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1065912349, now seen corresponding path program 1 times [2024-11-27 19:51:46,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:46,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823781570] [2024-11-27 19:51:46,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:46,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:46,920 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:46,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:46,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823781570] [2024-11-27 19:51:46,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823781570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:46,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531857527] [2024-11-27 19:51:46,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:46,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:46,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:46,923 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:51:46,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 19:51:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:47,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-27 19:51:47,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:51:47,745 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 33 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:47,745 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:51:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:49,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531857527] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:51:49,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:51:49,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-27 19:51:49,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734165517] [2024-11-27 19:51:49,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:51:49,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-27 19:51:49,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:49,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-27 19:51:49,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2024-11-27 19:51:49,954 INFO L87 Difference]: Start difference. First operand 12546 states and 16149 transitions. Second operand has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:51,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:51,029 INFO L93 Difference]: Finished difference Result 17462 states and 22205 transitions. [2024-11-27 19:51:51,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 19:51:51,030 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-27 19:51:51,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:51,040 INFO L225 Difference]: With dead ends: 17462 [2024-11-27 19:51:51,040 INFO L226 Difference]: Without dead ends: 12866 [2024-11-27 19:51:51,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2024-11-27 19:51:51,045 INFO L435 NwaCegarLoop]: 1515 mSDtfsCounter, 13412 mSDsluCounter, 9159 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13412 SdHoareTripleChecker+Valid, 10674 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:51,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13412 Valid, 10674 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 19:51:51,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12866 states. [2024-11-27 19:51:51,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12866 to 12546. [2024-11-27 19:51:51,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12546 states, 12544 states have (on average 1.2808514030612246) internal successors, (16067), 12545 states have internal predecessors, (16067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:51,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12546 states to 12546 states and 16067 transitions. [2024-11-27 19:51:51,613 INFO L78 Accepts]: Start accepts. Automaton has 12546 states and 16067 transitions. Word has length 103 [2024-11-27 19:51:51,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:51,613 INFO L471 AbstractCegarLoop]: Abstraction has 12546 states and 16067 transitions. [2024-11-27 19:51:51,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:51,613 INFO L276 IsEmpty]: Start isEmpty. Operand 12546 states and 16067 transitions. [2024-11-27 19:51:51,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-27 19:51:51,616 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:51,616 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:51,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 19:51:51,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-27 19:51:51,816 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:51,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:51,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1754049935, now seen corresponding path program 1 times [2024-11-27 19:51:51,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:51,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205285800] [2024-11-27 19:51:51,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:51,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:52,717 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:52,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:52,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205285800] [2024-11-27 19:51:52,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205285800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:52,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338409305] [2024-11-27 19:51:52,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:52,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:52,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:52,720 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:51:52,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 19:51:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:52,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 19:51:52,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:51:53,903 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 38 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:53,904 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:51:55,715 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:55,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338409305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:51:55,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:51:55,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-27 19:51:55,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722807911] [2024-11-27 19:51:55,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:51:55,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-27 19:51:55,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:55,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-27 19:51:55,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2024-11-27 19:51:55,717 INFO L87 Difference]: Start difference. First operand 12546 states and 16067 transitions. Second operand has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:57,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:57,176 INFO L93 Difference]: Finished difference Result 16811 states and 21257 transitions. [2024-11-27 19:51:57,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 19:51:57,177 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-27 19:51:57,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:57,192 INFO L225 Difference]: With dead ends: 16811 [2024-11-27 19:51:57,192 INFO L226 Difference]: Without dead ends: 12632 [2024-11-27 19:51:57,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=347, Invalid=1293, Unknown=0, NotChecked=0, Total=1640 [2024-11-27 19:51:57,198 INFO L435 NwaCegarLoop]: 1515 mSDtfsCounter, 13398 mSDsluCounter, 10672 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13398 SdHoareTripleChecker+Valid, 12187 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:57,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13398 Valid, 12187 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 19:51:57,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12632 states. [2024-11-27 19:51:57,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12632 to 12546. [2024-11-27 19:51:57,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12546 states, 12544 states have (on average 1.2764668367346939) internal successors, (16012), 12545 states have internal predecessors, (16012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:57,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12546 states to 12546 states and 16012 transitions. [2024-11-27 19:51:57,736 INFO L78 Accepts]: Start accepts. Automaton has 12546 states and 16012 transitions. Word has length 103 [2024-11-27 19:51:57,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:57,736 INFO L471 AbstractCegarLoop]: Abstraction has 12546 states and 16012 transitions. [2024-11-27 19:51:57,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:57,736 INFO L276 IsEmpty]: Start isEmpty. Operand 12546 states and 16012 transitions. [2024-11-27 19:51:57,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-27 19:51:57,739 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:57,739 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:57,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 19:51:57,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-27 19:51:57,940 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:57,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:57,940 INFO L85 PathProgramCache]: Analyzing trace with hash 856710688, now seen corresponding path program 1 times [2024-11-27 19:51:57,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:57,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248516033] [2024-11-27 19:51:57,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:57,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:59,502 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-27 19:51:59,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:59,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248516033] [2024-11-27 19:51:59,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248516033] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:59,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467873115] [2024-11-27 19:51:59,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:59,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:59,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:59,505 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:51:59,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 19:51:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:59,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-27 19:51:59,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:52:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:52:01,457 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:52:05,596 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:52:05,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467873115] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:52:05,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:52:05,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2024-11-27 19:52:05,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178220148] [2024-11-27 19:52:05,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:52:05,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-27 19:52:05,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:52:05,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-27 19:52:05,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2423, Unknown=0, NotChecked=0, Total=2652 [2024-11-27 19:52:05,598 INFO L87 Difference]: Start difference. First operand 12546 states and 16012 transitions. Second operand has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:34,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:34,292 INFO L93 Difference]: Finished difference Result 18644 states and 23275 transitions. [2024-11-27 19:52:34,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2024-11-27 19:52:34,293 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-27 19:52:34,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:34,312 INFO L225 Difference]: With dead ends: 18644 [2024-11-27 19:52:34,313 INFO L226 Difference]: Without dead ends: 14728 [2024-11-27 19:52:34,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9886 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=5256, Invalid=28416, Unknown=0, NotChecked=0, Total=33672 [2024-11-27 19:52:34,321 INFO L435 NwaCegarLoop]: 1686 mSDtfsCounter, 28171 mSDsluCounter, 30665 mSDsCounter, 0 mSdLazyCounter, 3760 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28171 SdHoareTripleChecker+Valid, 32351 SdHoareTripleChecker+Invalid, 4053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 3760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:34,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28171 Valid, 32351 Invalid, 4053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [293 Valid, 3760 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-27 19:52:34,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14728 states. [2024-11-27 19:52:34,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14728 to 12190. [2024-11-27 19:52:34,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12190 states, 12188 states have (on average 1.2749425664588119) internal successors, (15539), 12189 states have internal predecessors, (15539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:34,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12190 states to 12190 states and 15539 transitions. [2024-11-27 19:52:34,981 INFO L78 Accepts]: Start accepts. Automaton has 12190 states and 15539 transitions. Word has length 104 [2024-11-27 19:52:34,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:34,982 INFO L471 AbstractCegarLoop]: Abstraction has 12190 states and 15539 transitions. [2024-11-27 19:52:34,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:34,982 INFO L276 IsEmpty]: Start isEmpty. Operand 12190 states and 15539 transitions. [2024-11-27 19:52:34,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-27 19:52:34,984 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:34,985 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:34,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 19:52:35,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-27 19:52:35,186 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:35,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:35,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1395528875, now seen corresponding path program 1 times [2024-11-27 19:52:35,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:52:35,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49333632] [2024-11-27 19:52:35,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:35,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:52:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:36,941 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:52:36,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:52:36,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49333632] [2024-11-27 19:52:36,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49333632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:52:36,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346648559] [2024-11-27 19:52:36,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:36,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:52:36,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:52:36,944 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:52:36,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 19:52:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:37,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-27 19:52:37,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:52:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:52:39,475 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:52:43,878 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:52:43,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346648559] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:52:43,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:52:43,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 17] total 54 [2024-11-27 19:52:43,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460828038] [2024-11-27 19:52:43,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:52:43,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-27 19:52:43,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:52:43,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-27 19:52:43,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2630, Unknown=0, NotChecked=0, Total=2862 [2024-11-27 19:52:43,881 INFO L87 Difference]: Start difference. First operand 12190 states and 15539 transitions. Second operand has 54 states, 54 states have (on average 5.277777777777778) internal successors, (285), 54 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:37,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:53:37,253 INFO L93 Difference]: Finished difference Result 21086 states and 26207 transitions. [2024-11-27 19:53:37,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2024-11-27 19:53:37,254 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.277777777777778) internal successors, (285), 54 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-27 19:53:37,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:53:37,268 INFO L225 Difference]: With dead ends: 21086 [2024-11-27 19:53:37,269 INFO L226 Difference]: Without dead ends: 17022 [2024-11-27 19:53:37,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15919 ImplicationChecksByTransitivity, 50.4s TimeCoverageRelationStatistics Valid=8347, Invalid=42053, Unknown=0, NotChecked=0, Total=50400 [2024-11-27 19:53:37,279 INFO L435 NwaCegarLoop]: 1611 mSDtfsCounter, 28752 mSDsluCounter, 39193 mSDsCounter, 0 mSdLazyCounter, 3236 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28752 SdHoareTripleChecker+Valid, 40804 SdHoareTripleChecker+Invalid, 3392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 3236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:53:37,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28752 Valid, 40804 Invalid, 3392 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [156 Valid, 3236 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-27 19:53:37,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17022 states. [2024-11-27 19:53:38,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17022 to 16738. [2024-11-27 19:53:38,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16738 states, 16736 states have (on average 1.25256931166348) internal successors, (20963), 16737 states have internal predecessors, (20963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:38,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16738 states to 16738 states and 20963 transitions. [2024-11-27 19:53:38,517 INFO L78 Accepts]: Start accepts. Automaton has 16738 states and 20963 transitions. Word has length 105 [2024-11-27 19:53:38,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:53:38,517 INFO L471 AbstractCegarLoop]: Abstraction has 16738 states and 20963 transitions. [2024-11-27 19:53:38,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.277777777777778) internal successors, (285), 54 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:38,518 INFO L276 IsEmpty]: Start isEmpty. Operand 16738 states and 20963 transitions. [2024-11-27 19:53:38,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-27 19:53:38,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:53:38,519 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:53:38,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 19:53:38,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-27 19:53:38,720 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:53:38,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:53:38,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1969661904, now seen corresponding path program 1 times [2024-11-27 19:53:38,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:53:38,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679660632] [2024-11-27 19:53:38,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:38,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:53:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:40,852 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:53:40,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:53:40,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679660632] [2024-11-27 19:53:40,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679660632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:53:40,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967558125] [2024-11-27 19:53:40,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:40,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:53:40,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:53:40,855 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:53:40,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 19:53:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:41,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-27 19:53:41,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:53:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:53:45,692 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:53:56,699 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:53:56,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967558125] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:53:56,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:53:56,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28, 27] total 76 [2024-11-27 19:53:56,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891926244] [2024-11-27 19:53:56,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:53:56,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-27 19:53:56,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:53:56,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-27 19:53:56,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=5141, Unknown=0, NotChecked=0, Total=5700 [2024-11-27 19:53:56,702 INFO L87 Difference]: Start difference. First operand 16738 states and 20963 transitions. Second operand has 76 states, 76 states have (on average 3.6710526315789473) internal successors, (279), 76 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:14,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:55:14,960 INFO L93 Difference]: Finished difference Result 31611 states and 38803 transitions. [2024-11-27 19:55:14,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2024-11-27 19:55:14,960 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.6710526315789473) internal successors, (279), 76 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-27 19:55:14,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:55:15,040 INFO L225 Difference]: With dead ends: 31611 [2024-11-27 19:55:15,040 INFO L226 Difference]: Without dead ends: 22445 [2024-11-27 19:55:15,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 160 SyntacticMatches, 2 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18854 ImplicationChecksByTransitivity, 77.3s TimeCoverageRelationStatistics Valid=9117, Invalid=45405, Unknown=0, NotChecked=0, Total=54522 [2024-11-27 19:55:15,049 INFO L435 NwaCegarLoop]: 1646 mSDtfsCounter, 23331 mSDsluCounter, 31113 mSDsCounter, 0 mSdLazyCounter, 3983 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23331 SdHoareTripleChecker+Valid, 32759 SdHoareTripleChecker+Invalid, 4160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 3983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:55:15,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23331 Valid, 32759 Invalid, 4160 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [177 Valid, 3983 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-27 19:55:15,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22445 states. [2024-11-27 19:55:16,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22445 to 19099. [2024-11-27 19:55:16,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19099 states, 19097 states have (on average 1.2449075771063518) internal successors, (23774), 19098 states have internal predecessors, (23774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:16,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19099 states to 19099 states and 23774 transitions. [2024-11-27 19:55:16,832 INFO L78 Accepts]: Start accepts. Automaton has 19099 states and 23774 transitions. Word has length 106 [2024-11-27 19:55:16,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:55:16,833 INFO L471 AbstractCegarLoop]: Abstraction has 19099 states and 23774 transitions. [2024-11-27 19:55:16,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.6710526315789473) internal successors, (279), 76 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:16,833 INFO L276 IsEmpty]: Start isEmpty. Operand 19099 states and 23774 transitions. [2024-11-27 19:55:16,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-27 19:55:16,834 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:55:16,835 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:55:16,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 19:55:17,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:55:17,035 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:55:17,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:55:17,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1775421751, now seen corresponding path program 1 times [2024-11-27 19:55:17,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:55:17,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513268082] [2024-11-27 19:55:17,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:17,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:55:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:55:17,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:55:17,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513268082] [2024-11-27 19:55:17,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513268082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:55:17,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098772794] [2024-11-27 19:55:17,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:17,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:55:17,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:55:17,873 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:55:17,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 19:55:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:18,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-27 19:55:18,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:55:20,407 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:55:20,407 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:55:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 23 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:55:24,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098772794] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:55:24,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:55:24,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 17] total 44 [2024-11-27 19:55:24,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600459394] [2024-11-27 19:55:24,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:55:24,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-27 19:55:24,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:55:24,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-27 19:55:24,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1688, Unknown=0, NotChecked=0, Total=1892 [2024-11-27 19:55:24,110 INFO L87 Difference]: Start difference. First operand 19099 states and 23774 transitions. Second operand has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:31,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:55:31,521 INFO L93 Difference]: Finished difference Result 40208 states and 49125 transitions. [2024-11-27 19:55:31,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-27 19:55:31,522 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-27 19:55:31,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:55:31,549 INFO L225 Difference]: With dead ends: 40208 [2024-11-27 19:55:31,550 INFO L226 Difference]: Without dead ends: 29015 [2024-11-27 19:55:31,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1232, Invalid=5088, Unknown=0, NotChecked=0, Total=6320 [2024-11-27 19:55:31,557 INFO L435 NwaCegarLoop]: 1573 mSDtfsCounter, 24058 mSDsluCounter, 20657 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24058 SdHoareTripleChecker+Valid, 22230 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 19:55:31,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24058 Valid, 22230 Invalid, 1334 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 19:55:31,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29015 states. [2024-11-27 19:55:34,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29015 to 26683. [2024-11-27 19:55:34,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26683 states, 26681 states have (on average 1.2280649151081293) internal successors, (32766), 26682 states have internal predecessors, (32766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:34,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26683 states to 26683 states and 32766 transitions. [2024-11-27 19:55:34,434 INFO L78 Accepts]: Start accepts. Automaton has 26683 states and 32766 transitions. Word has length 107 [2024-11-27 19:55:34,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:55:34,434 INFO L471 AbstractCegarLoop]: Abstraction has 26683 states and 32766 transitions. [2024-11-27 19:55:34,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:34,435 INFO L276 IsEmpty]: Start isEmpty. Operand 26683 states and 32766 transitions. [2024-11-27 19:55:34,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-27 19:55:34,436 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:55:34,436 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:55:34,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 19:55:34,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:55:34,637 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:55:34,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:55:34,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1570064813, now seen corresponding path program 1 times [2024-11-27 19:55:34,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:55:34,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046933158] [2024-11-27 19:55:34,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:34,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:55:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:35,453 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:55:35,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:55:35,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046933158] [2024-11-27 19:55:35,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046933158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:55:35,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342496011] [2024-11-27 19:55:35,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:35,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:55:35,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:55:35,456 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:55:35,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 19:55:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:35,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-27 19:55:35,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:55:37,993 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 33 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:55:37,993 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:55:40,641 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:55:40,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342496011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:55:40,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:55:40,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 16] total 43 [2024-11-27 19:55:40,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42468654] [2024-11-27 19:55:40,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:55:40,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-27 19:55:40,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:55:40,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-27 19:55:40,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1592, Unknown=0, NotChecked=0, Total=1806 [2024-11-27 19:55:40,644 INFO L87 Difference]: Start difference. First operand 26683 states and 32766 transitions. Second operand has 43 states, 43 states have (on average 6.6976744186046515) internal successors, (288), 43 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:46,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:55:46,662 INFO L93 Difference]: Finished difference Result 47289 states and 57565 transitions. [2024-11-27 19:55:46,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-27 19:55:46,662 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.6976744186046515) internal successors, (288), 43 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-27 19:55:46,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:55:46,687 INFO L225 Difference]: With dead ends: 47289 [2024-11-27 19:55:46,687 INFO L226 Difference]: Without dead ends: 30269 [2024-11-27 19:55:46,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1021, Invalid=4235, Unknown=0, NotChecked=0, Total=5256 [2024-11-27 19:55:46,694 INFO L435 NwaCegarLoop]: 1575 mSDtfsCounter, 23989 mSDsluCounter, 17272 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23989 SdHoareTripleChecker+Valid, 18847 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 19:55:46,694 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23989 Valid, 18847 Invalid, 977 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 19:55:46,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30269 states. [2024-11-27 19:55:50,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30269 to 30100. [2024-11-27 19:55:50,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30100 states, 30098 states have (on average 1.221542959665094) internal successors, (36766), 30099 states have internal predecessors, (36766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:50,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30100 states to 30100 states and 36766 transitions. [2024-11-27 19:55:50,673 INFO L78 Accepts]: Start accepts. Automaton has 30100 states and 36766 transitions. Word has length 107 [2024-11-27 19:55:50,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:55:50,674 INFO L471 AbstractCegarLoop]: Abstraction has 30100 states and 36766 transitions. [2024-11-27 19:55:50,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.6976744186046515) internal successors, (288), 43 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:50,674 INFO L276 IsEmpty]: Start isEmpty. Operand 30100 states and 36766 transitions. [2024-11-27 19:55:50,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-27 19:55:50,676 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:55:50,676 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:55:50,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-27 19:55:50,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:55:50,877 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:55:50,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:55:50,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1360080118, now seen corresponding path program 1 times [2024-11-27 19:55:50,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:55:50,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149115839] [2024-11-27 19:55:50,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:50,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:55:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:55:53,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:55:53,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149115839] [2024-11-27 19:55:53,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149115839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:55:53,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907461193] [2024-11-27 19:55:53,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:53,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:55:53,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:55:53,294 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:55:53,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 19:55:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:53,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-27 19:55:53,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:55:57,196 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:55:57,196 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:56:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:56:01,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907461193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:56:01,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:56:01,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 20, 19] total 61 [2024-11-27 19:56:01,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556195310] [2024-11-27 19:56:01,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:56:01,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-27 19:56:01,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:56:01,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-27 19:56:01,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=3417, Unknown=0, NotChecked=0, Total=3660 [2024-11-27 19:56:01,323 INFO L87 Difference]: Start difference. First operand 30100 states and 36766 transitions. Second operand has 61 states, 61 states have (on average 4.475409836065574) internal successors, (273), 61 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:35,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:56:35,350 INFO L93 Difference]: Finished difference Result 52315 states and 63382 transitions. [2024-11-27 19:56:35,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-11-27 19:56:35,351 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.475409836065574) internal successors, (273), 61 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-11-27 19:56:35,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:56:35,385 INFO L225 Difference]: With dead ends: 52315 [2024-11-27 19:56:35,385 INFO L226 Difference]: Without dead ends: 43795 [2024-11-27 19:56:35,394 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9504 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=5157, Invalid=29253, Unknown=0, NotChecked=0, Total=34410 [2024-11-27 19:56:35,395 INFO L435 NwaCegarLoop]: 1652 mSDtfsCounter, 32367 mSDsluCounter, 34239 mSDsCounter, 0 mSdLazyCounter, 3750 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32367 SdHoareTripleChecker+Valid, 35891 SdHoareTripleChecker+Invalid, 3903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 3750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-27 19:56:35,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32367 Valid, 35891 Invalid, 3903 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [153 Valid, 3750 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-27 19:56:35,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43795 states. [2024-11-27 19:56:38,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43795 to 29109. [2024-11-27 19:56:38,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29109 states, 29107 states have (on average 1.2217679595973476) internal successors, (35562), 29108 states have internal predecessors, (35562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:38,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29109 states to 29109 states and 35562 transitions. [2024-11-27 19:56:38,694 INFO L78 Accepts]: Start accepts. Automaton has 29109 states and 35562 transitions. Word has length 108 [2024-11-27 19:56:38,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:56:38,695 INFO L471 AbstractCegarLoop]: Abstraction has 29109 states and 35562 transitions. [2024-11-27 19:56:38,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.475409836065574) internal successors, (273), 61 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:38,695 INFO L276 IsEmpty]: Start isEmpty. Operand 29109 states and 35562 transitions. [2024-11-27 19:56:38,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-27 19:56:38,697 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:56:38,697 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:56:38,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-27 19:56:38,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-27 19:56:38,898 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:56:38,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:56:38,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1868806128, now seen corresponding path program 1 times [2024-11-27 19:56:38,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:56:38,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358284994] [2024-11-27 19:56:38,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:56:38,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:56:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:56:40,132 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:56:40,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:56:40,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358284994] [2024-11-27 19:56:40,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358284994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:56:40,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530977585] [2024-11-27 19:56:40,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:56:40,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:56:40,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:56:40,135 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:56:40,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 19:56:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:56:40,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 19:56:40,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:56:41,494 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 33 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:56:41,494 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:56:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:56:46,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530977585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:56:46,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:56:46,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 43 [2024-11-27 19:56:46,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550955253] [2024-11-27 19:56:46,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:56:46,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-27 19:56:46,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:56:46,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-27 19:56:46,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2024-11-27 19:56:46,097 INFO L87 Difference]: Start difference. First operand 29109 states and 35562 transitions. Second operand has 43 states, 43 states have (on average 6.976744186046512) internal successors, (300), 43 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:09,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:57:09,897 INFO L93 Difference]: Finished difference Result 56284 states and 67993 transitions. [2024-11-27 19:57:09,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-11-27 19:57:09,897 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.976744186046512) internal successors, (300), 43 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-11-27 19:57:09,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:57:09,946 INFO L225 Difference]: With dead ends: 56284 [2024-11-27 19:57:09,947 INFO L226 Difference]: Without dead ends: 38158 [2024-11-27 19:57:09,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6714 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=3549, Invalid=19707, Unknown=0, NotChecked=0, Total=23256 [2024-11-27 19:57:09,961 INFO L435 NwaCegarLoop]: 1625 mSDtfsCounter, 17799 mSDsluCounter, 27643 mSDsCounter, 0 mSdLazyCounter, 2755 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17799 SdHoareTripleChecker+Valid, 29268 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:57:09,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17799 Valid, 29268 Invalid, 2851 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 2755 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-27 19:57:09,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38158 states. [2024-11-27 19:57:14,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38158 to 35789. [2024-11-27 19:57:14,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35789 states, 35787 states have (on average 1.2111101796741834) internal successors, (43342), 35788 states have internal predecessors, (43342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:14,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35789 states to 35789 states and 43342 transitions. [2024-11-27 19:57:14,216 INFO L78 Accepts]: Start accepts. Automaton has 35789 states and 43342 transitions. Word has length 108 [2024-11-27 19:57:14,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:57:14,216 INFO L471 AbstractCegarLoop]: Abstraction has 35789 states and 43342 transitions. [2024-11-27 19:57:14,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.976744186046512) internal successors, (300), 43 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:14,216 INFO L276 IsEmpty]: Start isEmpty. Operand 35789 states and 43342 transitions. [2024-11-27 19:57:14,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-27 19:57:14,218 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:57:14,218 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:57:14,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-27 19:57:14,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-27 19:57:14,419 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:57:14,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:57:14,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1776708174, now seen corresponding path program 1 times [2024-11-27 19:57:14,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:57:14,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805018588] [2024-11-27 19:57:14,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:57:14,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:57:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:57:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:57:16,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:57:16,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805018588] [2024-11-27 19:57:16,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805018588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:57:16,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799972315] [2024-11-27 19:57:16,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:57:16,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:57:16,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:57:16,537 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:57:16,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 19:57:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:57:16,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-27 19:57:16,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:57:22,095 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 42 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:57:22,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:57:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:57:33,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799972315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:57:33,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:57:33,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29, 27] total 75 [2024-11-27 19:57:33,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553460567] [2024-11-27 19:57:33,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:57:33,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-27 19:57:33,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:57:33,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-27 19:57:33,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=506, Invalid=5044, Unknown=0, NotChecked=0, Total=5550 [2024-11-27 19:57:33,159 INFO L87 Difference]: Start difference. First operand 35789 states and 43342 transitions. Second operand has 75 states, 75 states have (on average 3.5733333333333333) internal successors, (268), 75 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:04,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:59:04,346 INFO L93 Difference]: Finished difference Result 66564 states and 79777 transitions. [2024-11-27 19:59:04,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 268 states. [2024-11-27 19:59:04,346 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.5733333333333333) internal successors, (268), 75 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-11-27 19:59:04,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:59:04,392 INFO L225 Difference]: With dead ends: 66564 [2024-11-27 19:59:04,392 INFO L226 Difference]: Without dead ends: 52684 [2024-11-27 19:59:04,404 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 164 SyntacticMatches, 4 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46582 ImplicationChecksByTransitivity, 82.2s TimeCoverageRelationStatistics Valid=18100, Invalid=97840, Unknown=0, NotChecked=0, Total=115940 [2024-11-27 19:59:04,405 INFO L435 NwaCegarLoop]: 1692 mSDtfsCounter, 21438 mSDsluCounter, 45222 mSDsCounter, 0 mSdLazyCounter, 6912 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21438 SdHoareTripleChecker+Valid, 46914 SdHoareTripleChecker+Invalid, 7103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 6912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:59:04,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21438 Valid, 46914 Invalid, 7103 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [191 Valid, 6912 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2024-11-27 19:59:04,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52684 states. [2024-11-27 19:59:09,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52684 to 37447. [2024-11-27 19:59:09,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37447 states, 37445 states have (on average 1.2104686874081987) internal successors, (45326), 37446 states have internal predecessors, (45326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37447 states to 37447 states and 45326 transitions. [2024-11-27 19:59:09,840 INFO L78 Accepts]: Start accepts. Automaton has 37447 states and 45326 transitions. Word has length 108 [2024-11-27 19:59:09,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:59:09,840 INFO L471 AbstractCegarLoop]: Abstraction has 37447 states and 45326 transitions. [2024-11-27 19:59:09,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.5733333333333333) internal successors, (268), 75 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:09,841 INFO L276 IsEmpty]: Start isEmpty. Operand 37447 states and 45326 transitions. [2024-11-27 19:59:09,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-27 19:59:09,843 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:59:09,843 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:59:09,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-27 19:59:10,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:59:10,044 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:59:10,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:59:10,044 INFO L85 PathProgramCache]: Analyzing trace with hash 289672907, now seen corresponding path program 1 times [2024-11-27 19:59:10,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:59:10,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396255220] [2024-11-27 19:59:10,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:59:10,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:59:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:59:11,697 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 67 proven. 179 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:59:11,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:59:11,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396255220] [2024-11-27 19:59:11,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396255220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:59:11,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307433221] [2024-11-27 19:59:11,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:59:11,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:59:11,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:59:11,699 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:59:11,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 19:59:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:59:11,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-27 19:59:11,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:59:12,978 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 80 proven. 147 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 19:59:12,978 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:59:16,076 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 37 proven. 190 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 19:59:16,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307433221] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:59:16,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:59:16,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11, 11] total 43 [2024-11-27 19:59:16,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496302219] [2024-11-27 19:59:16,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:59:16,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-27 19:59:16,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:59:16,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-27 19:59:16,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1731, Unknown=0, NotChecked=0, Total=1892 [2024-11-27 19:59:16,078 INFO L87 Difference]: Start difference. First operand 37447 states and 45326 transitions. Second operand has 44 states, 44 states have (on average 8.909090909090908) internal successors, (392), 43 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:33,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:59:33,131 INFO L93 Difference]: Finished difference Result 50848 states and 61412 transitions. [2024-11-27 19:59:33,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-27 19:59:33,132 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 8.909090909090908) internal successors, (392), 43 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2024-11-27 19:59:33,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:59:33,163 INFO L225 Difference]: With dead ends: 50848 [2024-11-27 19:59:33,163 INFO L226 Difference]: Without dead ends: 37541 [2024-11-27 19:59:33,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4283 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=3290, Invalid=13480, Unknown=0, NotChecked=0, Total=16770 [2024-11-27 19:59:33,171 INFO L435 NwaCegarLoop]: 1585 mSDtfsCounter, 32119 mSDsluCounter, 16573 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32119 SdHoareTripleChecker+Valid, 18158 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-27 19:59:33,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32119 Valid, 18158 Invalid, 2025 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-27 19:59:33,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37541 states. [2024-11-27 19:59:36,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37541 to 25802. [2024-11-27 19:59:36,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25802 states, 25800 states have (on average 1.2178682170542636) internal successors, (31421), 25801 states have internal predecessors, (31421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:36,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25802 states to 25802 states and 31421 transitions. [2024-11-27 19:59:36,837 INFO L78 Accepts]: Start accepts. Automaton has 25802 states and 31421 transitions. Word has length 146 [2024-11-27 19:59:36,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:59:36,837 INFO L471 AbstractCegarLoop]: Abstraction has 25802 states and 31421 transitions. [2024-11-27 19:59:36,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 8.909090909090908) internal successors, (392), 43 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:36,837 INFO L276 IsEmpty]: Start isEmpty. Operand 25802 states and 31421 transitions. [2024-11-27 19:59:36,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-27 19:59:36,839 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:59:36,839 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:59:36,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-27 19:59:37,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:59:37,040 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:59:37,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:59:37,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1444097760, now seen corresponding path program 1 times [2024-11-27 19:59:37,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:59:37,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92497036] [2024-11-27 19:59:37,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:59:37,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:59:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:59:39,099 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 53 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:59:39,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:59:39,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92497036] [2024-11-27 19:59:39,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92497036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:59:39,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016094749] [2024-11-27 19:59:39,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:59:39,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:59:39,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:59:39,101 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:59:39,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 19:59:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:59:39,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-27 19:59:39,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:59:43,281 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 57 proven. 191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:59:43,281 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:59:49,749 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 53 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:59:49,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016094749] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:59:49,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:59:49,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 23, 22] total 67 [2024-11-27 19:59:49,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572409795] [2024-11-27 19:59:49,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:59:49,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-27 19:59:49,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:59:49,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-27 19:59:49,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=4065, Unknown=0, NotChecked=0, Total=4422 [2024-11-27 19:59:49,752 INFO L87 Difference]: Start difference. First operand 25802 states and 31421 transitions. Second operand has 67 states, 67 states have (on average 5.776119402985074) internal successors, (387), 67 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:27,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:00:27,421 INFO L93 Difference]: Finished difference Result 36888 states and 44485 transitions. [2024-11-27 20:00:27,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-11-27 20:00:27,422 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.776119402985074) internal successors, (387), 67 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2024-11-27 20:00:27,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:00:27,443 INFO L225 Difference]: With dead ends: 36888 [2024-11-27 20:00:27,443 INFO L226 Difference]: Without dead ends: 20428 [2024-11-27 20:00:27,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 253 SyntacticMatches, 2 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11983 ImplicationChecksByTransitivity, 34.4s TimeCoverageRelationStatistics Valid=7429, Invalid=32371, Unknown=0, NotChecked=0, Total=39800 [2024-11-27 20:00:27,453 INFO L435 NwaCegarLoop]: 1598 mSDtfsCounter, 44826 mSDsluCounter, 27012 mSDsCounter, 0 mSdLazyCounter, 3596 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44826 SdHoareTripleChecker+Valid, 28610 SdHoareTripleChecker+Invalid, 3744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 3596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:00:27,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44826 Valid, 28610 Invalid, 3744 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [148 Valid, 3596 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-27 20:00:27,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20428 states. [2024-11-27 20:00:29,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20428 to 18782. [2024-11-27 20:00:29,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18782 states, 18780 states have (on average 1.233493077742279) internal successors, (23165), 18781 states have internal predecessors, (23165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:30,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18782 states to 18782 states and 23165 transitions. [2024-11-27 20:00:30,007 INFO L78 Accepts]: Start accepts. Automaton has 18782 states and 23165 transitions. Word has length 147 [2024-11-27 20:00:30,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:00:30,008 INFO L471 AbstractCegarLoop]: Abstraction has 18782 states and 23165 transitions. [2024-11-27 20:00:30,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 5.776119402985074) internal successors, (387), 67 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:30,008 INFO L276 IsEmpty]: Start isEmpty. Operand 18782 states and 23165 transitions. [2024-11-27 20:00:30,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-27 20:00:30,009 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:30,010 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:00:30,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-27 20:00:30,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-27 20:00:30,210 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:30,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:30,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1800837796, now seen corresponding path program 1 times [2024-11-27 20:00:30,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:00:30,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463480337] [2024-11-27 20:00:30,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:30,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:00:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:34,068 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 27 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:00:34,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:00:34,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463480337] [2024-11-27 20:00:34,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463480337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:00:34,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605176318] [2024-11-27 20:00:34,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:34,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:00:34,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:00:34,071 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:00:34,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-27 20:00:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:34,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-27 20:00:34,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:00:39,629 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 73 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:00:39,629 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:00:49,678 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 27 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:00:49,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605176318] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:00:49,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:00:49,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 28, 27] total 85 [2024-11-27 20:00:49,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983940314] [2024-11-27 20:00:49,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:00:49,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-27 20:00:49,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:00:49,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-27 20:00:49,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=6643, Unknown=0, NotChecked=0, Total=7140 [2024-11-27 20:00:49,680 INFO L87 Difference]: Start difference. First operand 18782 states and 23165 transitions. Second operand has 85 states, 85 states have (on average 4.952941176470588) internal successors, (421), 85 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:07,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:02:07,185 INFO L93 Difference]: Finished difference Result 21390 states and 26218 transitions. [2024-11-27 20:02:07,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-11-27 20:02:07,186 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 4.952941176470588) internal successors, (421), 85 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2024-11-27 20:02:07,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:02:07,204 INFO L225 Difference]: With dead ends: 21390 [2024-11-27 20:02:07,204 INFO L226 Difference]: Without dead ends: 19740 [2024-11-27 20:02:07,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14063 ImplicationChecksByTransitivity, 73.9s TimeCoverageRelationStatistics Valid=7771, Invalid=39101, Unknown=0, NotChecked=0, Total=46872 [2024-11-27 20:02:07,210 INFO L435 NwaCegarLoop]: 1606 mSDtfsCounter, 50918 mSDsluCounter, 44357 mSDsCounter, 0 mSdLazyCounter, 5248 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50918 SdHoareTripleChecker+Valid, 45963 SdHoareTripleChecker+Invalid, 5584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 5248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:02:07,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50918 Valid, 45963 Invalid, 5584 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [336 Valid, 5248 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-27 20:02:07,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19740 states. [2024-11-27 20:02:09,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19740 to 19180. [2024-11-27 20:02:09,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19180 states, 19178 states have (on average 1.2327145687767234) internal successors, (23641), 19179 states have internal predecessors, (23641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:09,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19180 states to 19180 states and 23641 transitions. [2024-11-27 20:02:09,990 INFO L78 Accepts]: Start accepts. Automaton has 19180 states and 23641 transitions. Word has length 147 [2024-11-27 20:02:09,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:02:09,991 INFO L471 AbstractCegarLoop]: Abstraction has 19180 states and 23641 transitions. [2024-11-27 20:02:09,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 4.952941176470588) internal successors, (421), 85 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:09,991 INFO L276 IsEmpty]: Start isEmpty. Operand 19180 states and 23641 transitions. [2024-11-27 20:02:09,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-27 20:02:09,994 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:02:09,994 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:02:10,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-27 20:02:10,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-27 20:02:10,195 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:02:10,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:02:10,195 INFO L85 PathProgramCache]: Analyzing trace with hash 355894557, now seen corresponding path program 1 times [2024-11-27 20:02:10,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:02:10,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574719526] [2024-11-27 20:02:10,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:10,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:02:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:11,856 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 37 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:02:11,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:02:11,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574719526] [2024-11-27 20:02:11,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574719526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:02:11,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571754820] [2024-11-27 20:02:11,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:11,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:02:11,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:02:11,859 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:02:11,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-27 20:02:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:12,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-27 20:02:12,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:02:15,120 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 37 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:02:15,120 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:02:19,631 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 37 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:02:19,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571754820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:02:19,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:02:19,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 20, 18] total 60 [2024-11-27 20:02:19,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188709680] [2024-11-27 20:02:19,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:02:19,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-27 20:02:19,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:02:19,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-27 20:02:19,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=3287, Unknown=0, NotChecked=0, Total=3540 [2024-11-27 20:02:19,633 INFO L87 Difference]: Start difference. First operand 19180 states and 23641 transitions. Second operand has 60 states, 60 states have (on average 6.616666666666666) internal successors, (397), 60 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:43,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:02:43,145 INFO L93 Difference]: Finished difference Result 19421 states and 23891 transitions. [2024-11-27 20:02:43,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-11-27 20:02:43,145 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 6.616666666666666) internal successors, (397), 60 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2024-11-27 20:02:43,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:02:43,155 INFO L225 Difference]: With dead ends: 19421 [2024-11-27 20:02:43,155 INFO L226 Difference]: Without dead ends: 8449 [2024-11-27 20:02:43,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8491 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=5908, Invalid=25954, Unknown=0, NotChecked=0, Total=31862 [2024-11-27 20:02:43,163 INFO L435 NwaCegarLoop]: 1580 mSDtfsCounter, 42249 mSDsluCounter, 25027 mSDsCounter, 0 mSdLazyCounter, 3080 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42249 SdHoareTripleChecker+Valid, 26607 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:02:43,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42249 Valid, 26607 Invalid, 3187 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3080 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-27 20:02:43,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8449 states. [2024-11-27 20:02:43,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8449 to 7826. [2024-11-27 20:02:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7826 states, 7824 states have (on average 1.3044478527607362) internal successors, (10206), 7825 states have internal predecessors, (10206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:43,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7826 states to 7826 states and 10206 transitions. [2024-11-27 20:02:43,752 INFO L78 Accepts]: Start accepts. Automaton has 7826 states and 10206 transitions. Word has length 148 [2024-11-27 20:02:43,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:02:43,753 INFO L471 AbstractCegarLoop]: Abstraction has 7826 states and 10206 transitions. [2024-11-27 20:02:43,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 6.616666666666666) internal successors, (397), 60 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:43,753 INFO L276 IsEmpty]: Start isEmpty. Operand 7826 states and 10206 transitions. [2024-11-27 20:02:43,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-27 20:02:43,754 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:02:43,755 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:02:43,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-27 20:02:43,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-27 20:02:43,955 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:02:43,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:02:43,956 INFO L85 PathProgramCache]: Analyzing trace with hash -970975155, now seen corresponding path program 1 times [2024-11-27 20:02:43,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:02:43,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26826261] [2024-11-27 20:02:43,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:43,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:02:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:44,158 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 20 proven. 199 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-27 20:02:44,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:02:44,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26826261] [2024-11-27 20:02:44,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26826261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:02:44,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213640298] [2024-11-27 20:02:44,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:44,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:02:44,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:02:44,161 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:02:44,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-27 20:02:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:44,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 20:02:44,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:02:44,667 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 20 proven. 199 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-27 20:02:44,667 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:02:45,384 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 92 proven. 134 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 20:02:45,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213640298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:02:45,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:02:45,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2024-11-27 20:02:45,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895515294] [2024-11-27 20:02:45,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:02:45,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:02:45,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:02:45,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:02:45,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:02:45,387 INFO L87 Difference]: Start difference. First operand 7826 states and 10206 transitions. Second operand has 12 states, 12 states have (on average 22.833333333333332) internal successors, (274), 12 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:46,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:02:46,417 INFO L93 Difference]: Finished difference Result 12294 states and 15579 transitions. [2024-11-27 20:02:46,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:02:46,418 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 22.833333333333332) internal successors, (274), 12 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2024-11-27 20:02:46,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:02:46,429 INFO L225 Difference]: With dead ends: 12294 [2024-11-27 20:02:46,429 INFO L226 Difference]: Without dead ends: 10211 [2024-11-27 20:02:46,432 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:02:46,432 INFO L435 NwaCegarLoop]: 1576 mSDtfsCounter, 1674 mSDsluCounter, 6374 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1674 SdHoareTripleChecker+Valid, 7950 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:02:46,433 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1674 Valid, 7950 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:02:46,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10211 states. [2024-11-27 20:02:47,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10211 to 10054. [2024-11-27 20:02:47,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10054 states, 10052 states have (on average 1.2519896538002389) internal successors, (12585), 10053 states have internal predecessors, (12585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:47,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10054 states to 10054 states and 12585 transitions. [2024-11-27 20:02:47,340 INFO L78 Accepts]: Start accepts. Automaton has 10054 states and 12585 transitions. Word has length 148 [2024-11-27 20:02:47,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:02:47,341 INFO L471 AbstractCegarLoop]: Abstraction has 10054 states and 12585 transitions. [2024-11-27 20:02:47,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.833333333333332) internal successors, (274), 12 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:47,341 INFO L276 IsEmpty]: Start isEmpty. Operand 10054 states and 12585 transitions. [2024-11-27 20:02:47,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-27 20:02:47,342 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:02:47,342 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:02:47,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-27 20:02:47,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-27 20:02:47,543 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:02:47,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:02:47,544 INFO L85 PathProgramCache]: Analyzing trace with hash -2046949756, now seen corresponding path program 1 times [2024-11-27 20:02:47,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:02:47,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690101624] [2024-11-27 20:02:47,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:47,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:02:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:47,678 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-11-27 20:02:47,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:02:47,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690101624] [2024-11-27 20:02:47,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690101624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:02:47,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:02:47,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:02:47,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260221069] [2024-11-27 20:02:47,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:02:47,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:02:47,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:02:47,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:02:47,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:02:47,680 INFO L87 Difference]: Start difference. First operand 10054 states and 12585 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:48,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:02:48,597 INFO L93 Difference]: Finished difference Result 11011 states and 13642 transitions. [2024-11-27 20:02:48,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:02:48,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-11-27 20:02:48,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:02:48,608 INFO L225 Difference]: With dead ends: 11011 [2024-11-27 20:02:48,608 INFO L226 Difference]: Without dead ends: 9573 [2024-11-27 20:02:48,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:02:48,611 INFO L435 NwaCegarLoop]: 1537 mSDtfsCounter, 3018 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3018 SdHoareTripleChecker+Valid, 3113 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:02:48,611 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3018 Valid, 3113 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:02:48,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9573 states. [2024-11-27 20:02:49,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9573 to 9339. [2024-11-27 20:02:49,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9339 states, 9337 states have (on average 1.2592909928242477) internal successors, (11758), 9338 states have internal predecessors, (11758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:49,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9339 states to 9339 states and 11758 transitions. [2024-11-27 20:02:49,389 INFO L78 Accepts]: Start accepts. Automaton has 9339 states and 11758 transitions. Word has length 149 [2024-11-27 20:02:49,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:02:49,390 INFO L471 AbstractCegarLoop]: Abstraction has 9339 states and 11758 transitions. [2024-11-27 20:02:49,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:49,390 INFO L276 IsEmpty]: Start isEmpty. Operand 9339 states and 11758 transitions. [2024-11-27 20:02:49,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-27 20:02:49,391 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:02:49,392 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:02:49,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-27 20:02:49,392 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:02:49,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:02:49,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1345885178, now seen corresponding path program 1 times [2024-11-27 20:02:49,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:02:49,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559460652] [2024-11-27 20:02:49,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:49,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:02:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 37 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:02:50,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:02:50,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559460652] [2024-11-27 20:02:50,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559460652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:02:50,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580132438] [2024-11-27 20:02:50,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:50,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:02:50,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:02:50,895 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:02:50,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a9f264-6d1a-472d-9299-91ab0a5da655/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-27 20:02:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:51,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-27 20:02:51,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:02:53,553 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 37 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:02:53,553 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:03:03,914 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 37 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:03:03,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580132438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:03:03,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:03:03,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22, 22] total 64 [2024-11-27 20:03:03,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432818433] [2024-11-27 20:03:03,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:03:03,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-27 20:03:03,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:03:03,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-27 20:03:03,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=3613, Unknown=0, NotChecked=0, Total=4032 [2024-11-27 20:03:03,916 INFO L87 Difference]: Start difference. First operand 9339 states and 11758 transitions. Second operand has 64 states, 64 states have (on average 6.640625) internal successors, (425), 64 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)