./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label09.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_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1 --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 d7f66091a22b7f33dbae7f0078b7d76412336b82f61d79dbfed76c4950c4dfdc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:51:23,102 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:51:23,161 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 15:51:23,167 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:51:23,167 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:51:23,191 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:51:23,192 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:51:23,192 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:51:23,193 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:51:23,193 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:51:23,193 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:51:23,193 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:51:23,194 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:51:23,194 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:51:23,194 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:51:23,194 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:51:23,194 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:51:23,194 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:51:23,194 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:51:23,194 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:51:23,194 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:51:23,195 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:51:23,195 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:51:23,195 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:51:23,195 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:51:23,195 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:51:23,195 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:51:23,195 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:51:23,195 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:51:23,195 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:51:23,196 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:51:23,196 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:51:23,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:51:23,196 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:51:23,196 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:51:23,196 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:51:23,196 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:51:23,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:51:23,196 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:51:23,197 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:51:23,197 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:51:23,197 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:51:23,197 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:51:23,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:51:23,197 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:51:23,197 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:51:23,197 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:51:23,198 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:51:23,198 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_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1 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 -> d7f66091a22b7f33dbae7f0078b7d76412336b82f61d79dbfed76c4950c4dfdc [2024-12-02 15:51:23,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:51:23,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:51:23,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:51:23,438 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:51:23,439 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:51:23,440 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/eca-rers2012/Problem13_label09.c [2024-12-02 15:51:26,129 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/data/6cce56903/5449dbf9af504114abfe5c02e5d9e715/FLAG286dbca60 [2024-12-02 15:51:26,659 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:51:26,659 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/sv-benchmarks/c/eca-rers2012/Problem13_label09.c [2024-12-02 15:51:26,689 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/data/6cce56903/5449dbf9af504114abfe5c02e5d9e715/FLAG286dbca60 [2024-12-02 15:51:26,704 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/data/6cce56903/5449dbf9af504114abfe5c02e5d9e715 [2024-12-02 15:51:26,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:51:26,708 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:51:26,710 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:51:26,710 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:51:26,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:51:26,715 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:51:26" (1/1) ... [2024-12-02 15:51:26,716 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39046403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:51:26, skipping insertion in model container [2024-12-02 15:51:26,716 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:51:26" (1/1) ... [2024-12-02 15:51:26,819 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:51:27,041 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_47e7f24b-344c-4b20-a99a-4005c1f71d4a/sv-benchmarks/c/eca-rers2012/Problem13_label09.c[8517,8530] [2024-12-02 15:51:27,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:51:27,801 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:51:27,820 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_47e7f24b-344c-4b20-a99a-4005c1f71d4a/sv-benchmarks/c/eca-rers2012/Problem13_label09.c[8517,8530] [2024-12-02 15:51:28,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:51:28,282 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:51:28,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:51:28 WrapperNode [2024-12-02 15:51:28,283 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:51:28,284 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:51:28,284 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:51:28,284 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:51:28,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:51:28" (1/1) ... [2024-12-02 15:51:28,337 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:51:28" (1/1) ... [2024-12-02 15:51:28,736 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-12-02 15:51:28,737 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:51:28,737 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:51:28,737 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:51:28,737 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:51:28,747 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:51:28" (1/1) ... [2024-12-02 15:51:28,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:51:28" (1/1) ... [2024-12-02 15:51:28,819 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:51:28" (1/1) ... [2024-12-02 15:51:29,083 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]. [2024-12-02 15:51:29,083 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:51:28" (1/1) ... [2024-12-02 15:51:29,083 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:51:28" (1/1) ... [2024-12-02 15:51:29,280 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:51:28" (1/1) ... [2024-12-02 15:51:29,292 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:51:28" (1/1) ... [2024-12-02 15:51:29,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:51:28" (1/1) ... [2024-12-02 15:51:29,365 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:51:28" (1/1) ... [2024-12-02 15:51:29,384 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:51:28" (1/1) ... [2024-12-02 15:51:29,473 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:51:29,474 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:51:29,474 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:51:29,474 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:51:29,476 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:51:28" (1/1) ... [2024-12-02 15:51:29,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:51:29,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:51:29,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:51:29,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:51:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:51:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:51:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:51:29,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:51:29,637 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:51:29,638 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:51:35,800 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-12-02 15:51:35,800 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:51:35,834 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:51:35,834 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 15:51:35,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:51:35 BoogieIcfgContainer [2024-12-02 15:51:35,834 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:51:35,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:51:35,837 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:51:35,841 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:51:35,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:51:26" (1/3) ... [2024-12-02 15:51:35,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16376bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:51:35, skipping insertion in model container [2024-12-02 15:51:35,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:51:28" (2/3) ... [2024-12-02 15:51:35,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16376bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:51:35, skipping insertion in model container [2024-12-02 15:51:35,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:51:35" (3/3) ... [2024-12-02 15:51:35,844 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem13_label09.c [2024-12-02 15:51:35,858 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:51:35,860 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem13_label09.c that has 1 procedures, 1098 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 15:51:35,963 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:51:35,976 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;@3e7e2343, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:51:35,976 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 15:51:35,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:35,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 15:51:35,991 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:35,992 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:51:35,992 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:35,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:35,997 INFO L85 PathProgramCache]: Analyzing trace with hash -634083006, now seen corresponding path program 1 times [2024-12-02 15:51:36,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:36,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29013362] [2024-12-02 15:51:36,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:51:36,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:36,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:51:36,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:36,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29013362] [2024-12-02 15:51:36,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29013362] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:51:36,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:51:36,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:51:36,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611849325] [2024-12-02 15:51:36,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:51:36,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:51:36,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:36,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:51:36,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:51:36,359 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:40,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:51:40,824 INFO L93 Difference]: Finished difference Result 3121 states and 5804 transitions. [2024-12-02 15:51:40,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:51:40,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-12-02 15:51:40,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:51:40,842 INFO L225 Difference]: With dead ends: 3121 [2024-12-02 15:51:40,842 INFO L226 Difference]: Without dead ends: 1944 [2024-12-02 15:51:40,847 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 [2024-12-02 15:51:40,850 INFO L435 NwaCegarLoop]: 438 mSDtfsCounter, 929 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 3124 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 3701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 3124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:51:40,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 575 Invalid, 3701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 3124 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-12-02 15:51:40,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2024-12-02 15:51:40,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1873. [2024-12-02 15:51:40,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1872 states have (on average 1.7393162393162394) internal successors, (3256), 1872 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:40,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 3256 transitions. [2024-12-02 15:51:40,938 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 3256 transitions. Word has length 60 [2024-12-02 15:51:40,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:51:40,938 INFO L471 AbstractCegarLoop]: Abstraction has 1873 states and 3256 transitions. [2024-12-02 15:51:40,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:40,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 3256 transitions. [2024-12-02 15:51:40,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 15:51:40,942 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:40,943 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 15:51:40,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 15:51:40,943 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:40,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:40,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1233426070, now seen corresponding path program 1 times [2024-12-02 15:51:40,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:40,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190272839] [2024-12-02 15:51:40,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:51:40,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:41,146 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:51:41,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:41,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190272839] [2024-12-02 15:51:41,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190272839] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:51:41,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:51:41,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:51:41,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468513214] [2024-12-02 15:51:41,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:51:41,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:51:41,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:41,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:51:41,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:51:41,148 INFO L87 Difference]: Start difference. First operand 1873 states and 3256 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:45,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:51:45,240 INFO L93 Difference]: Finished difference Result 5351 states and 9369 transitions. [2024-12-02 15:51:45,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:51:45,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2024-12-02 15:51:45,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:51:45,248 INFO L225 Difference]: With dead ends: 5351 [2024-12-02 15:51:45,248 INFO L226 Difference]: Without dead ends: 3480 [2024-12-02 15:51:45,250 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 [2024-12-02 15:51:45,251 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 884 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:51:45,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1079 Invalid, 3216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-12-02 15:51:45,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2024-12-02 15:51:45,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 3479. [2024-12-02 15:51:45,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3479 states, 3478 states have (on average 1.518688901667625) internal successors, (5282), 3478 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:45,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 5282 transitions. [2024-12-02 15:51:45,306 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 5282 transitions. Word has length 125 [2024-12-02 15:51:45,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:51:45,306 INFO L471 AbstractCegarLoop]: Abstraction has 3479 states and 5282 transitions. [2024-12-02 15:51:45,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:45,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 5282 transitions. [2024-12-02 15:51:45,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 15:51:45,309 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:45,310 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 15:51:45,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:51:45,310 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:45,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:45,311 INFO L85 PathProgramCache]: Analyzing trace with hash 843865445, now seen corresponding path program 1 times [2024-12-02 15:51:45,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:45,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084921010] [2024-12-02 15:51:45,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:51:45,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:51:45,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:45,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084921010] [2024-12-02 15:51:45,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084921010] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:51:45,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:51:45,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:51:45,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404639777] [2024-12-02 15:51:45,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:51:45,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:51:45,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:45,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:51:45,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:51:45,444 INFO L87 Difference]: Start difference. First operand 3479 states and 5282 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:48,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:51:48,836 INFO L93 Difference]: Finished difference Result 10142 states and 15438 transitions. [2024-12-02 15:51:48,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:51:48,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2024-12-02 15:51:48,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:51:48,858 INFO L225 Difference]: With dead ends: 10142 [2024-12-02 15:51:48,859 INFO L226 Difference]: Without dead ends: 6665 [2024-12-02 15:51:48,863 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 [2024-12-02 15:51:48,864 INFO L435 NwaCegarLoop]: 744 mSDtfsCounter, 976 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 772 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 772 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:51:48,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 877 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [772 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 15:51:48,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6665 states. [2024-12-02 15:51:48,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6665 to 6657. [2024-12-02 15:51:48,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6657 states, 6656 states have (on average 1.3728966346153846) internal successors, (9138), 6656 states have internal predecessors, (9138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:48,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6657 states to 6657 states and 9138 transitions. [2024-12-02 15:51:48,995 INFO L78 Accepts]: Start accepts. Automaton has 6657 states and 9138 transitions. Word has length 127 [2024-12-02 15:51:48,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:51:48,995 INFO L471 AbstractCegarLoop]: Abstraction has 6657 states and 9138 transitions. [2024-12-02 15:51:48,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:48,996 INFO L276 IsEmpty]: Start isEmpty. Operand 6657 states and 9138 transitions. [2024-12-02 15:51:48,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-12-02 15:51:48,998 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:48,998 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 15:51:48,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 15:51:48,998 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:48,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:48,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1693822870, now seen corresponding path program 1 times [2024-12-02 15:51:48,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:48,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267906560] [2024-12-02 15:51:48,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:51:49,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:49,216 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:51:49,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:49,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267906560] [2024-12-02 15:51:49,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267906560] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:51:49,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:51:49,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:51:49,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231071425] [2024-12-02 15:51:49,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:51:49,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:51:49,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:49,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:51:49,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:51:49,218 INFO L87 Difference]: Start difference. First operand 6657 states and 9138 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:54,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:51:54,115 INFO L93 Difference]: Finished difference Result 19637 states and 26969 transitions. [2024-12-02 15:51:54,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:51:54,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2024-12-02 15:51:54,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:51:54,137 INFO L225 Difference]: With dead ends: 19637 [2024-12-02 15:51:54,137 INFO L226 Difference]: Without dead ends: 12982 [2024-12-02 15:51:54,141 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 [2024-12-02 15:51:54,141 INFO L435 NwaCegarLoop]: 1012 mSDtfsCounter, 791 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:51:54,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1163 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-12-02 15:51:54,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12982 states. [2024-12-02 15:51:54,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12982 to 12175. [2024-12-02 15:51:54,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12175 states, 12174 states have (on average 1.2529160505996386) internal successors, (15253), 12174 states have internal predecessors, (15253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:54,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12175 states to 12175 states and 15253 transitions. [2024-12-02 15:51:54,339 INFO L78 Accepts]: Start accepts. Automaton has 12175 states and 15253 transitions. Word has length 133 [2024-12-02 15:51:54,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:51:54,339 INFO L471 AbstractCegarLoop]: Abstraction has 12175 states and 15253 transitions. [2024-12-02 15:51:54,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:54,340 INFO L276 IsEmpty]: Start isEmpty. Operand 12175 states and 15253 transitions. [2024-12-02 15:51:54,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-12-02 15:51:54,341 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:54,341 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 15:51:54,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 15:51:54,342 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:54,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:54,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1278101586, now seen corresponding path program 1 times [2024-12-02 15:51:54,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:54,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434041810] [2024-12-02 15:51:54,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:51:54,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:54,743 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:51:54,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:54,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434041810] [2024-12-02 15:51:54,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434041810] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:51:54,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:51:54,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:51:54,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963846225] [2024-12-02 15:51:54,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:51:54,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:51:54,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:54,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:51:54,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:51:54,745 INFO L87 Difference]: Start difference. First operand 12175 states and 15253 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:57,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:51:57,605 INFO L93 Difference]: Finished difference Result 25135 states and 31306 transitions. [2024-12-02 15:51:57,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:51:57,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-12-02 15:51:57,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:51:57,636 INFO L225 Difference]: With dead ends: 25135 [2024-12-02 15:51:57,636 INFO L226 Difference]: Without dead ends: 12962 [2024-12-02 15:51:57,643 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 [2024-12-02 15:51:57,643 INFO L435 NwaCegarLoop]: 1083 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:51:57,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1212 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 15:51:57,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2024-12-02 15:51:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 12962. [2024-12-02 15:51:57,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12962 states, 12961 states have (on average 1.2379446030398888) internal successors, (16045), 12961 states have internal predecessors, (16045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:57,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12962 states to 12962 states and 16045 transitions. [2024-12-02 15:51:57,777 INFO L78 Accepts]: Start accepts. Automaton has 12962 states and 16045 transitions. Word has length 149 [2024-12-02 15:51:57,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:51:57,777 INFO L471 AbstractCegarLoop]: Abstraction has 12962 states and 16045 transitions. [2024-12-02 15:51:57,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:57,777 INFO L276 IsEmpty]: Start isEmpty. Operand 12962 states and 16045 transitions. [2024-12-02 15:51:57,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 15:51:57,778 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:57,778 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 15:51:57,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:51:57,779 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:57,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:57,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1570681347, now seen corresponding path program 1 times [2024-12-02 15:51:57,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:57,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561154264] [2024-12-02 15:51:57,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:51:57,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:58,194 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:51:58,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:58,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561154264] [2024-12-02 15:51:58,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561154264] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:51:58,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707087695] [2024-12-02 15:51:58,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:51:58,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:51:58,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:51:58,197 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:51:58,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:51:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:58,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 15:51:58,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:51:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:51:58,425 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:51:58,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707087695] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:51:58,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:51:58,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-12-02 15:51:58,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584276376] [2024-12-02 15:51:58,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:51:58,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:51:58,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:58,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:51:58,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:51:58,427 INFO L87 Difference]: Start difference. First operand 12962 states and 16045 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:02,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:02,272 INFO L93 Difference]: Finished difference Result 36956 states and 46072 transitions. [2024-12-02 15:52:02,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:52:02,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2024-12-02 15:52:02,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:02,310 INFO L225 Difference]: With dead ends: 36956 [2024-12-02 15:52:02,310 INFO L226 Difference]: Without dead ends: 24783 [2024-12-02 15:52:02,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:52:02,320 INFO L435 NwaCegarLoop]: 520 mSDtfsCounter, 950 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2699 mSolverCounterSat, 810 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 3509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 810 IncrementalHoareTripleChecker+Valid, 2699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:02,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 645 Invalid, 3509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [810 Valid, 2699 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-12-02 15:52:02,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24783 states. [2024-12-02 15:52:02,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24783 to 20845. [2024-12-02 15:52:02,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20845 states, 20844 states have (on average 1.233976204183458) internal successors, (25721), 20844 states have internal predecessors, (25721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:02,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20845 states to 20845 states and 25721 transitions. [2024-12-02 15:52:02,595 INFO L78 Accepts]: Start accepts. Automaton has 20845 states and 25721 transitions. Word has length 156 [2024-12-02 15:52:02,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:02,595 INFO L471 AbstractCegarLoop]: Abstraction has 20845 states and 25721 transitions. [2024-12-02 15:52:02,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:02,595 INFO L276 IsEmpty]: Start isEmpty. Operand 20845 states and 25721 transitions. [2024-12-02 15:52:02,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-12-02 15:52:02,601 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:02,601 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 15:52:02,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:52:02,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:02,802 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:02,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:02,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1525153703, now seen corresponding path program 1 times [2024-12-02 15:52:02,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:02,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329936171] [2024-12-02 15:52:02,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:52:02,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:03,205 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-12-02 15:52:03,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:03,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329936171] [2024-12-02 15:52:03,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329936171] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:52:03,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:52:03,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:52:03,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047161868] [2024-12-02 15:52:03,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:52:03,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:52:03,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:52:03,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:52:03,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:52:03,207 INFO L87 Difference]: Start difference. First operand 20845 states and 25721 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:06,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:06,691 INFO L93 Difference]: Finished difference Result 45642 states and 55813 transitions. [2024-12-02 15:52:06,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:52:06,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 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 272 [2024-12-02 15:52:06,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:06,739 INFO L225 Difference]: With dead ends: 45642 [2024-12-02 15:52:06,739 INFO L226 Difference]: Without dead ends: 25586 [2024-12-02 15:52:06,756 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 [2024-12-02 15:52:06,756 INFO L435 NwaCegarLoop]: 1025 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 2716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:06,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1209 Invalid, 2716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2712 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 15:52:06,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25586 states. [2024-12-02 15:52:07,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25586 to 25577. [2024-12-02 15:52:07,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25577 states, 25576 states have (on average 1.205896152643103) internal successors, (30842), 25576 states have internal predecessors, (30842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:07,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25577 states to 25577 states and 30842 transitions. [2024-12-02 15:52:07,137 INFO L78 Accepts]: Start accepts. Automaton has 25577 states and 30842 transitions. Word has length 272 [2024-12-02 15:52:07,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:07,137 INFO L471 AbstractCegarLoop]: Abstraction has 25577 states and 30842 transitions. [2024-12-02 15:52:07,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:07,138 INFO L276 IsEmpty]: Start isEmpty. Operand 25577 states and 30842 transitions. [2024-12-02 15:52:07,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-12-02 15:52:07,144 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:07,145 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 15:52:07,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 15:52:07,145 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:07,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:07,146 INFO L85 PathProgramCache]: Analyzing trace with hash -153270830, now seen corresponding path program 1 times [2024-12-02 15:52:07,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:07,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599014106] [2024-12-02 15:52:07,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:52:07,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-12-02 15:52:07,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:07,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599014106] [2024-12-02 15:52:07,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599014106] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:52:07,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:52:07,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:52:07,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765396388] [2024-12-02 15:52:07,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:52:07,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:52:07,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:52:07,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:52:07,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:52:07,438 INFO L87 Difference]: Start difference. First operand 25577 states and 30842 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:11,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:11,054 INFO L93 Difference]: Finished difference Result 63758 states and 78444 transitions. [2024-12-02 15:52:11,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:52:11,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 296 [2024-12-02 15:52:11,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:11,089 INFO L225 Difference]: With dead ends: 63758 [2024-12-02 15:52:11,089 INFO L226 Difference]: Without dead ends: 38970 [2024-12-02 15:52:11,103 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 [2024-12-02 15:52:11,103 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 888 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 908 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 908 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:11,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 956 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [908 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 15:52:11,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38970 states. [2024-12-02 15:52:11,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38970 to 36598. [2024-12-02 15:52:11,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36598 states, 36597 states have (on average 1.191299833319671) internal successors, (43598), 36597 states have internal predecessors, (43598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:11,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36598 states to 36598 states and 43598 transitions. [2024-12-02 15:52:11,481 INFO L78 Accepts]: Start accepts. Automaton has 36598 states and 43598 transitions. Word has length 296 [2024-12-02 15:52:11,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:11,481 INFO L471 AbstractCegarLoop]: Abstraction has 36598 states and 43598 transitions. [2024-12-02 15:52:11,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:11,481 INFO L276 IsEmpty]: Start isEmpty. Operand 36598 states and 43598 transitions. [2024-12-02 15:52:11,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-12-02 15:52:11,487 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:11,487 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:52:11,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 15:52:11,487 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:11,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:11,488 INFO L85 PathProgramCache]: Analyzing trace with hash -16737668, now seen corresponding path program 1 times [2024-12-02 15:52:11,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:11,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265481892] [2024-12-02 15:52:11,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:52:11,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-12-02 15:52:11,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:11,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265481892] [2024-12-02 15:52:11,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265481892] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:52:11,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:52:11,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:52:11,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825298624] [2024-12-02 15:52:11,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:52:11,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:52:11,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:52:11,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:52:11,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:52:11,816 INFO L87 Difference]: Start difference. First operand 36598 states and 43598 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:18,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:18,946 INFO L93 Difference]: Finished difference Result 106466 states and 128048 transitions. [2024-12-02 15:52:18,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:52:18,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 348 [2024-12-02 15:52:18,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:19,008 INFO L225 Difference]: With dead ends: 106466 [2024-12-02 15:52:19,008 INFO L226 Difference]: Without dead ends: 70657 [2024-12-02 15:52:19,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:52:19,032 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 1717 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 6390 mSolverCounterSat, 1036 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 7426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1036 IncrementalHoareTripleChecker+Valid, 6390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:19,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1717 Valid, 1084 Invalid, 7426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1036 Valid, 6390 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-12-02 15:52:19,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70657 states. [2024-12-02 15:52:19,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70657 to 68962. [2024-12-02 15:52:19,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68962 states, 68961 states have (on average 1.1797827757718131) internal successors, (81359), 68961 states have internal predecessors, (81359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:19,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68962 states to 68962 states and 81359 transitions. [2024-12-02 15:52:19,833 INFO L78 Accepts]: Start accepts. Automaton has 68962 states and 81359 transitions. Word has length 348 [2024-12-02 15:52:19,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:19,833 INFO L471 AbstractCegarLoop]: Abstraction has 68962 states and 81359 transitions. [2024-12-02 15:52:19,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:19,834 INFO L276 IsEmpty]: Start isEmpty. Operand 68962 states and 81359 transitions. [2024-12-02 15:52:19,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-12-02 15:52:19,846 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:19,846 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 15:52:19,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 15:52:19,847 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:19,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:19,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1843600389, now seen corresponding path program 1 times [2024-12-02 15:52:19,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:19,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775698912] [2024-12-02 15:52:19,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:52:19,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:21,113 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 244 proven. 113 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-12-02 15:52:21,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:21,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775698912] [2024-12-02 15:52:21,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775698912] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:52:21,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988372515] [2024-12-02 15:52:21,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:52:21,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:21,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:52:21,116 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:52:21,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 15:52:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:21,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 15:52:21,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:52:21,379 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-12-02 15:52:21,379 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:52:21,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988372515] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:52:21,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:52:21,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-12-02 15:52:21,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422509664] [2024-12-02 15:52:21,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:52:21,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:52:21,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:52:21,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:52:21,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:52:21,381 INFO L87 Difference]: Start difference. First operand 68962 states and 81359 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:25,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:25,916 INFO L93 Difference]: Finished difference Result 192417 states and 228153 transitions. [2024-12-02 15:52:25,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:52:25,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 366 [2024-12-02 15:52:25,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:26,037 INFO L225 Difference]: With dead ends: 192417 [2024-12-02 15:52:26,037 INFO L226 Difference]: Without dead ends: 124244 [2024-12-02 15:52:26,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:52:26,078 INFO L435 NwaCegarLoop]: 716 mSDtfsCounter, 1076 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 2634 mSolverCounterSat, 538 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 3172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 2634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:26,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 928 Invalid, 3172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [538 Valid, 2634 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-12-02 15:52:26,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124244 states. [2024-12-02 15:52:27,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124244 to 121067. [2024-12-02 15:52:27,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121067 states, 121066 states have (on average 1.15423818413097) internal successors, (139739), 121066 states have internal predecessors, (139739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:27,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121067 states to 121067 states and 139739 transitions. [2024-12-02 15:52:27,403 INFO L78 Accepts]: Start accepts. Automaton has 121067 states and 139739 transitions. Word has length 366 [2024-12-02 15:52:27,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:27,404 INFO L471 AbstractCegarLoop]: Abstraction has 121067 states and 139739 transitions. [2024-12-02 15:52:27,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:27,404 INFO L276 IsEmpty]: Start isEmpty. Operand 121067 states and 139739 transitions. [2024-12-02 15:52:27,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-12-02 15:52:27,410 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:27,410 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:52:27,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 15:52:27,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 15:52:27,611 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:27,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:27,611 INFO L85 PathProgramCache]: Analyzing trace with hash -996462798, now seen corresponding path program 1 times [2024-12-02 15:52:27,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:27,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275255404] [2024-12-02 15:52:27,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:52:27,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 481 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-12-02 15:52:27,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:27,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275255404] [2024-12-02 15:52:27,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275255404] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:52:27,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:52:27,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:52:27,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36049569] [2024-12-02 15:52:27,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:52:27,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:52:27,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:52:27,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:52:27,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:52:27,819 INFO L87 Difference]: Start difference. First operand 121067 states and 139739 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:31,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:31,789 INFO L93 Difference]: Finished difference Result 230130 states and 266188 transitions. [2024-12-02 15:52:31,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:52:31,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 414 [2024-12-02 15:52:31,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:31,893 INFO L225 Difference]: With dead ends: 230130 [2024-12-02 15:52:31,893 INFO L226 Difference]: Without dead ends: 109065 [2024-12-02 15:52:31,928 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 [2024-12-02 15:52:31,929 INFO L435 NwaCegarLoop]: 1504 mSDtfsCounter, 1036 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 2943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:31,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 1639 Invalid, 2943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 15:52:32,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109065 states. [2024-12-02 15:52:32,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109065 to 102761. [2024-12-02 15:52:32,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102761 states, 102760 states have (on average 1.1134488127676139) internal successors, (114418), 102760 states have internal predecessors, (114418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:33,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102761 states to 102761 states and 114418 transitions. [2024-12-02 15:52:33,128 INFO L78 Accepts]: Start accepts. Automaton has 102761 states and 114418 transitions. Word has length 414 [2024-12-02 15:52:33,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:33,128 INFO L471 AbstractCegarLoop]: Abstraction has 102761 states and 114418 transitions. [2024-12-02 15:52:33,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:33,128 INFO L276 IsEmpty]: Start isEmpty. Operand 102761 states and 114418 transitions. [2024-12-02 15:52:33,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2024-12-02 15:52:33,136 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:33,136 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 15:52:33,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 15:52:33,136 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:33,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:33,137 INFO L85 PathProgramCache]: Analyzing trace with hash -238343487, now seen corresponding path program 1 times [2024-12-02 15:52:33,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:33,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314070824] [2024-12-02 15:52:33,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:52:33,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:34,321 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 341 proven. 110 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-12-02 15:52:34,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:34,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314070824] [2024-12-02 15:52:34,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314070824] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:52:34,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594475576] [2024-12-02 15:52:34,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:52:34,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:34,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:52:34,323 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:52:34,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 15:52:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:34,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 15:52:34,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:52:34,684 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 338 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-12-02 15:52:34,684 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:52:34,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594475576] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:52:34,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:52:34,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-12-02 15:52:34,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024650459] [2024-12-02 15:52:34,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:52:34,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:52:34,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:52:34,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:52:34,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:52:34,686 INFO L87 Difference]: Start difference. First operand 102761 states and 114418 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:38,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:38,290 INFO L93 Difference]: Finished difference Result 204731 states and 228041 transitions. [2024-12-02 15:52:38,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:52:38,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 415 [2024-12-02 15:52:38,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:38,393 INFO L225 Difference]: With dead ends: 204731 [2024-12-02 15:52:38,393 INFO L226 Difference]: Without dead ends: 102759 [2024-12-02 15:52:38,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:52:38,439 INFO L435 NwaCegarLoop]: 1341 mSDtfsCounter, 1083 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:38,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1420 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-12-02 15:52:38,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102759 states. [2024-12-02 15:52:39,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102759 to 102758. [2024-12-02 15:52:39,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102758 states, 102757 states have (on average 1.0837509853343326) internal successors, (111363), 102757 states have internal predecessors, (111363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:39,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102758 states to 102758 states and 111363 transitions. [2024-12-02 15:52:39,489 INFO L78 Accepts]: Start accepts. Automaton has 102758 states and 111363 transitions. Word has length 415 [2024-12-02 15:52:39,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:39,490 INFO L471 AbstractCegarLoop]: Abstraction has 102758 states and 111363 transitions. [2024-12-02 15:52:39,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:39,490 INFO L276 IsEmpty]: Start isEmpty. Operand 102758 states and 111363 transitions. [2024-12-02 15:52:39,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-12-02 15:52:39,506 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:39,506 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 15:52:39,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 15:52:39,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:39,707 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:39,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:39,707 INFO L85 PathProgramCache]: Analyzing trace with hash 227363781, now seen corresponding path program 1 times [2024-12-02 15:52:39,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:39,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722457099] [2024-12-02 15:52:39,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:52:39,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:40,926 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 525 proven. 110 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-12-02 15:52:40,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:40,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722457099] [2024-12-02 15:52:40,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722457099] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:52:40,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862247101] [2024-12-02 15:52:40,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:52:40,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:40,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:52:40,929 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:52:40,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 15:52:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:41,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 15:52:41,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:52:41,216 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2024-12-02 15:52:41,216 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:52:41,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862247101] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:52:41,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:52:41,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-12-02 15:52:41,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857392543] [2024-12-02 15:52:41,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:52:41,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:52:41,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:52:41,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:52:41,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:52:41,218 INFO L87 Difference]: Start difference. First operand 102758 states and 111363 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:45,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:45,255 INFO L93 Difference]: Finished difference Result 237002 states and 258420 transitions. [2024-12-02 15:52:45,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:52:45,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 534 [2024-12-02 15:52:45,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:45,482 INFO L225 Difference]: With dead ends: 237002 [2024-12-02 15:52:45,482 INFO L226 Difference]: Without dead ends: 135033 [2024-12-02 15:52:45,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:52:45,517 INFO L435 NwaCegarLoop]: 1618 mSDtfsCounter, 886 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 2499 mSolverCounterSat, 767 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 767 IncrementalHoareTripleChecker+Valid, 2499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:45,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 1739 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [767 Valid, 2499 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 15:52:45,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135033 states. [2024-12-02 15:52:46,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135033 to 130294. [2024-12-02 15:52:46,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130294 states, 130293 states have (on average 1.0758290928906389) internal successors, (140173), 130293 states have internal predecessors, (140173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:47,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130294 states to 130294 states and 140173 transitions. [2024-12-02 15:52:47,316 INFO L78 Accepts]: Start accepts. Automaton has 130294 states and 140173 transitions. Word has length 534 [2024-12-02 15:52:47,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:47,317 INFO L471 AbstractCegarLoop]: Abstraction has 130294 states and 140173 transitions. [2024-12-02 15:52:47,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:47,318 INFO L276 IsEmpty]: Start isEmpty. Operand 130294 states and 140173 transitions. [2024-12-02 15:52:47,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2024-12-02 15:52:47,357 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:47,358 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 15:52:47,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 15:52:47,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:47,558 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:47,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:47,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1622361941, now seen corresponding path program 1 times [2024-12-02 15:52:47,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:47,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300886224] [2024-12-02 15:52:47,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:52:47,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:47,981 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 748 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-12-02 15:52:47,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:47,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300886224] [2024-12-02 15:52:47,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300886224] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:52:47,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:52:47,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:52:47,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872907735] [2024-12-02 15:52:47,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:52:47,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:52:47,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:52:47,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:52:47,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:52:47,983 INFO L87 Difference]: Start difference. First operand 130294 states and 140173 transitions. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:51,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:51,654 INFO L93 Difference]: Finished difference Result 261381 states and 281155 transitions. [2024-12-02 15:52:51,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:52:51,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 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 663 [2024-12-02 15:52:51,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:51,924 INFO L225 Difference]: With dead ends: 261381 [2024-12-02 15:52:51,924 INFO L226 Difference]: Without dead ends: 131876 [2024-12-02 15:52:51,954 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 [2024-12-02 15:52:51,955 INFO L435 NwaCegarLoop]: 622 mSDtfsCounter, 835 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 3071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:51,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 702 Invalid, 3071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 15:52:52,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131876 states. [2024-12-02 15:52:52,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131876 to 130284. [2024-12-02 15:52:52,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130284 states, 130283 states have (on average 1.065434477253364) internal successors, (138808), 130283 states have internal predecessors, (138808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:53,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130284 states to 130284 states and 138808 transitions. [2024-12-02 15:52:53,100 INFO L78 Accepts]: Start accepts. Automaton has 130284 states and 138808 transitions. Word has length 663 [2024-12-02 15:52:53,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:53,100 INFO L471 AbstractCegarLoop]: Abstraction has 130284 states and 138808 transitions. [2024-12-02 15:52:53,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:53,100 INFO L276 IsEmpty]: Start isEmpty. Operand 130284 states and 138808 transitions. [2024-12-02 15:52:53,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2024-12-02 15:52:53,126 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:53,127 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:52:53,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 15:52:53,127 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:53,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:53,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1650283535, now seen corresponding path program 1 times [2024-12-02 15:52:53,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:53,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579030948] [2024-12-02 15:52:53,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:52:53,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:55,216 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 576 proven. 113 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-12-02 15:52:55,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:55,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579030948] [2024-12-02 15:52:55,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579030948] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:52:55,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894760501] [2024-12-02 15:52:55,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:52:55,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:55,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:52:55,218 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:52:55,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 15:52:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:55,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 15:52:55,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:52:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 692 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-12-02 15:52:55,961 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:52:55,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894760501] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:52:55,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:52:55,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-12-02 15:52:55,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73435790] [2024-12-02 15:52:55,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:52:55,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:52:55,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:52:55,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:52:55,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:52:55,963 INFO L87 Difference]: Start difference. First operand 130284 states and 138808 transitions. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:00,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:00,130 INFO L93 Difference]: Finished difference Result 249526 states and 266851 transitions. [2024-12-02 15:53:00,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:53:00,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 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 718 [2024-12-02 15:53:00,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:00,250 INFO L225 Difference]: With dead ends: 249526 [2024-12-02 15:53:00,251 INFO L226 Difference]: Without dead ends: 134990 [2024-12-02 15:53:00,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:53:00,290 INFO L435 NwaCegarLoop]: 375 mSDtfsCounter, 1016 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 840 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 3101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 840 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:00,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 389 Invalid, 3101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [840 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 15:53:00,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134990 states. [2024-12-02 15:53:01,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134990 to 134990. [2024-12-02 15:53:01,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134990 states, 134989 states have (on average 1.0631310699390322) internal successors, (143511), 134989 states have internal predecessors, (143511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:01,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134990 states to 134990 states and 143511 transitions. [2024-12-02 15:53:01,572 INFO L78 Accepts]: Start accepts. Automaton has 134990 states and 143511 transitions. Word has length 718 [2024-12-02 15:53:01,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:01,573 INFO L471 AbstractCegarLoop]: Abstraction has 134990 states and 143511 transitions. [2024-12-02 15:53:01,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:01,573 INFO L276 IsEmpty]: Start isEmpty. Operand 134990 states and 143511 transitions. [2024-12-02 15:53:01,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2024-12-02 15:53:01,598 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:01,599 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:01,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 15:53:01,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:01,799 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:01,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:01,800 INFO L85 PathProgramCache]: Analyzing trace with hash -228091699, now seen corresponding path program 1 times [2024-12-02 15:53:01,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:01,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835759722] [2024-12-02 15:53:01,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:01,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 893 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-12-02 15:53:02,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:02,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835759722] [2024-12-02 15:53:02,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835759722] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:02,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:53:02,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:53:02,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087056069] [2024-12-02 15:53:02,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:02,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:53:02,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:02,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:53:02,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:53:02,300 INFO L87 Difference]: Start difference. First operand 134990 states and 143511 transitions. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:06,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:06,493 INFO L93 Difference]: Finished difference Result 270769 states and 287818 transitions. [2024-12-02 15:53:06,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:53:06,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 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 770 [2024-12-02 15:53:06,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:06,621 INFO L225 Difference]: With dead ends: 270769 [2024-12-02 15:53:06,621 INFO L226 Difference]: Without dead ends: 136568 [2024-12-02 15:53:06,679 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 [2024-12-02 15:53:06,679 INFO L435 NwaCegarLoop]: 1390 mSDtfsCounter, 932 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 3060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:06,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 1472 Invalid, 3060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-12-02 15:53:06,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136568 states. [2024-12-02 15:53:08,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136568 to 134984. [2024-12-02 15:53:08,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134984 states, 134983 states have (on average 1.052354740967381) internal successors, (142050), 134983 states have internal predecessors, (142050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:08,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134984 states to 134984 states and 142050 transitions. [2024-12-02 15:53:08,266 INFO L78 Accepts]: Start accepts. Automaton has 134984 states and 142050 transitions. Word has length 770 [2024-12-02 15:53:08,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:08,267 INFO L471 AbstractCegarLoop]: Abstraction has 134984 states and 142050 transitions. [2024-12-02 15:53:08,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:08,267 INFO L276 IsEmpty]: Start isEmpty. Operand 134984 states and 142050 transitions. [2024-12-02 15:53:08,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2024-12-02 15:53:08,302 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:08,303 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:08,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 15:53:08,303 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:08,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:08,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2135332128, now seen corresponding path program 1 times [2024-12-02 15:53:08,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:08,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719317647] [2024-12-02 15:53:08,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:08,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:08,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1222 backedges. 641 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2024-12-02 15:53:08,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:08,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719317647] [2024-12-02 15:53:08,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719317647] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:08,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:53:08,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:53:08,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463262267] [2024-12-02 15:53:08,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:08,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:53:08,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:08,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:53:08,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:53:08,728 INFO L87 Difference]: Start difference. First operand 134984 states and 142050 transitions. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 2 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:11,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:11,386 INFO L93 Difference]: Finished difference Result 253415 states and 267131 transitions. [2024-12-02 15:53:11,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:53:11,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 2 states have internal predecessors, (489), 0 states have call successors, (0), 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 811 [2024-12-02 15:53:11,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:11,497 INFO L225 Difference]: With dead ends: 253415 [2024-12-02 15:53:11,498 INFO L226 Difference]: Without dead ends: 134179 [2024-12-02 15:53:11,542 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 [2024-12-02 15:53:11,542 INFO L435 NwaCegarLoop]: 286 mSDtfsCounter, 1649 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:11,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1649 Valid, 286 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1510 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 15:53:11,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134179 states. [2024-12-02 15:53:12,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134179 to 134178. [2024-12-02 15:53:12,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134178 states, 134177 states have (on average 1.051886686988083) internal successors, (141139), 134177 states have internal predecessors, (141139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:12,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134178 states to 134178 states and 141139 transitions. [2024-12-02 15:53:12,874 INFO L78 Accepts]: Start accepts. Automaton has 134178 states and 141139 transitions. Word has length 811 [2024-12-02 15:53:12,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:12,875 INFO L471 AbstractCegarLoop]: Abstraction has 134178 states and 141139 transitions. [2024-12-02 15:53:12,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 2 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:12,875 INFO L276 IsEmpty]: Start isEmpty. Operand 134178 states and 141139 transitions. [2024-12-02 15:53:12,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2024-12-02 15:53:12,899 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:12,899 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:12,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 15:53:12,899 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:12,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:12,900 INFO L85 PathProgramCache]: Analyzing trace with hash -2091953618, now seen corresponding path program 1 times [2024-12-02 15:53:12,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:12,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415922017] [2024-12-02 15:53:12,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:12,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 681 proven. 110 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-12-02 15:53:14,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:14,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415922017] [2024-12-02 15:53:14,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415922017] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:53:14,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393773501] [2024-12-02 15:53:14,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:14,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:14,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:53:14,896 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:53:14,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 15:53:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:15,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 15:53:15,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:53:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 667 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-12-02 15:53:15,948 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:53:15,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393773501] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:15,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:53:15,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-12-02 15:53:15,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592712904] [2024-12-02 15:53:15,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:15,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:53:15,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:15,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:53:15,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:53:15,950 INFO L87 Difference]: Start difference. First operand 134178 states and 141139 transitions. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 2 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:19,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:19,032 INFO L93 Difference]: Finished difference Result 257344 states and 271089 transitions. [2024-12-02 15:53:19,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:53:19,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 2 states have internal predecessors, (510), 0 states have call successors, (0), 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 827 [2024-12-02 15:53:19,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:19,144 INFO L225 Difference]: With dead ends: 257344 [2024-12-02 15:53:19,144 INFO L226 Difference]: Without dead ends: 137337 [2024-12-02 15:53:19,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 831 GetRequests, 826 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:53:19,197 INFO L435 NwaCegarLoop]: 998 mSDtfsCounter, 640 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 2541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:19,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 1129 Invalid, 2541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 15:53:19,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137337 states. [2024-12-02 15:53:20,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137337 to 137327. [2024-12-02 15:53:20,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137327 states, 137326 states have (on average 1.047055910752516) internal successors, (143788), 137326 states have internal predecessors, (143788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:20,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137327 states to 137327 states and 143788 transitions. [2024-12-02 15:53:20,545 INFO L78 Accepts]: Start accepts. Automaton has 137327 states and 143788 transitions. Word has length 827 [2024-12-02 15:53:20,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:20,545 INFO L471 AbstractCegarLoop]: Abstraction has 137327 states and 143788 transitions. [2024-12-02 15:53:20,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 2 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:20,545 INFO L276 IsEmpty]: Start isEmpty. Operand 137327 states and 143788 transitions. [2024-12-02 15:53:20,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2024-12-02 15:53:20,754 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:20,754 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:20,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 15:53:20,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:20,955 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:20,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:20,956 INFO L85 PathProgramCache]: Analyzing trace with hash -494545914, now seen corresponding path program 1 times [2024-12-02 15:53:20,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:20,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349946810] [2024-12-02 15:53:20,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:20,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:21,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1394 backedges. 809 proven. 0 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2024-12-02 15:53:21,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:21,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349946810] [2024-12-02 15:53:21,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349946810] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:21,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:53:21,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:53:21,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412483465] [2024-12-02 15:53:21,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:21,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:53:21,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:21,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:53:21,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:53:21,566 INFO L87 Difference]: Start difference. First operand 137327 states and 143788 transitions. Second operand has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:24,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:24,775 INFO L93 Difference]: Finished difference Result 274662 states and 287530 transitions. [2024-12-02 15:53:24,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:53:24,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 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 862 [2024-12-02 15:53:24,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:24,895 INFO L225 Difference]: With dead ends: 274662 [2024-12-02 15:53:24,895 INFO L226 Difference]: Without dead ends: 136548 [2024-12-02 15:53:24,952 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 [2024-12-02 15:53:24,953 INFO L435 NwaCegarLoop]: 1622 mSDtfsCounter, 667 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2410 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 2662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 2410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:24,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 1747 Invalid, 2662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 2410 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 15:53:25,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136548 states. [2024-12-02 15:53:25,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136548 to 134943. [2024-12-02 15:53:25,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134943 states, 134942 states have (on average 1.0408471787879237) internal successors, (140454), 134942 states have internal predecessors, (140454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:26,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134943 states to 134943 states and 140454 transitions. [2024-12-02 15:53:26,070 INFO L78 Accepts]: Start accepts. Automaton has 134943 states and 140454 transitions. Word has length 862 [2024-12-02 15:53:26,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:26,071 INFO L471 AbstractCegarLoop]: Abstraction has 134943 states and 140454 transitions. [2024-12-02 15:53:26,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:26,071 INFO L276 IsEmpty]: Start isEmpty. Operand 134943 states and 140454 transitions. [2024-12-02 15:53:26,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2024-12-02 15:53:26,117 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:26,118 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:26,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 15:53:26,118 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:26,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:26,119 INFO L85 PathProgramCache]: Analyzing trace with hash 2114229198, now seen corresponding path program 1 times [2024-12-02 15:53:26,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:26,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012040053] [2024-12-02 15:53:26,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:26,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:26,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 774 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-12-02 15:53:26,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:26,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012040053] [2024-12-02 15:53:26,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012040053] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:26,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:53:26,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:53:26,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463962609] [2024-12-02 15:53:26,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:26,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:53:26,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:26,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:53:26,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:53:26,637 INFO L87 Difference]: Start difference. First operand 134943 states and 140454 transitions. Second operand has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:30,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:30,580 INFO L93 Difference]: Finished difference Result 279343 states and 291472 transitions. [2024-12-02 15:53:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:53:30,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 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 884 [2024-12-02 15:53:30,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:30,739 INFO L225 Difference]: With dead ends: 279343 [2024-12-02 15:53:30,739 INFO L226 Difference]: Without dead ends: 158574 [2024-12-02 15:53:30,803 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 [2024-12-02 15:53:30,804 INFO L435 NwaCegarLoop]: 758 mSDtfsCounter, 613 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2447 mSolverCounterSat, 580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 3027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 580 IncrementalHoareTripleChecker+Valid, 2447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:30,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 876 Invalid, 3027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [580 Valid, 2447 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 15:53:30,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158574 states. [2024-12-02 15:53:32,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158574 to 134943. [2024-12-02 15:53:32,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134943 states, 134942 states have (on average 1.0404914704095092) internal successors, (140406), 134942 states have internal predecessors, (140406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:32,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134943 states to 134943 states and 140406 transitions. [2024-12-02 15:53:32,512 INFO L78 Accepts]: Start accepts. Automaton has 134943 states and 140406 transitions. Word has length 884 [2024-12-02 15:53:32,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:32,513 INFO L471 AbstractCegarLoop]: Abstraction has 134943 states and 140406 transitions. [2024-12-02 15:53:32,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:32,513 INFO L276 IsEmpty]: Start isEmpty. Operand 134943 states and 140406 transitions. [2024-12-02 15:53:32,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2024-12-02 15:53:32,557 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:32,557 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2024-12-02 15:53:32,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 15:53:32,557 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:32,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:32,558 INFO L85 PathProgramCache]: Analyzing trace with hash 320394613, now seen corresponding path program 1 times [2024-12-02 15:53:32,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:32,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449487041] [2024-12-02 15:53:32,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:32,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:33,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1475 backedges. 1144 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2024-12-02 15:53:33,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:33,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449487041] [2024-12-02 15:53:33,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449487041] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:33,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:53:33,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:53:33,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354171790] [2024-12-02 15:53:33,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:33,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:53:33,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:33,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:53:33,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:53:33,073 INFO L87 Difference]: Start difference. First operand 134943 states and 140406 transitions. Second operand has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:36,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:36,110 INFO L93 Difference]: Finished difference Result 283262 states and 295531 transitions. [2024-12-02 15:53:36,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:53:36,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 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 1002 [2024-12-02 15:53:36,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:36,256 INFO L225 Difference]: With dead ends: 283262 [2024-12-02 15:53:36,256 INFO L226 Difference]: Without dead ends: 162493 [2024-12-02 15:53:36,312 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 [2024-12-02 15:53:36,313 INFO L435 NwaCegarLoop]: 1639 mSDtfsCounter, 562 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:36,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 1765 Invalid, 2681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 15:53:36,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162493 states. [2024-12-02 15:53:37,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162493 to 162479. [2024-12-02 15:53:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162479 states, 162478 states have (on average 1.0367065079580005) internal successors, (168442), 162478 states have internal predecessors, (168442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:38,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162479 states to 162479 states and 168442 transitions. [2024-12-02 15:53:38,140 INFO L78 Accepts]: Start accepts. Automaton has 162479 states and 168442 transitions. Word has length 1002 [2024-12-02 15:53:38,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:38,140 INFO L471 AbstractCegarLoop]: Abstraction has 162479 states and 168442 transitions. [2024-12-02 15:53:38,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:38,141 INFO L276 IsEmpty]: Start isEmpty. Operand 162479 states and 168442 transitions. [2024-12-02 15:53:38,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1045 [2024-12-02 15:53:38,221 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:38,222 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:38,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 15:53:38,222 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:38,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:38,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1102831078, now seen corresponding path program 1 times [2024-12-02 15:53:38,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:38,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352644457] [2024-12-02 15:53:38,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:38,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:39,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 1372 proven. 0 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2024-12-02 15:53:39,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:39,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352644457] [2024-12-02 15:53:39,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352644457] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:39,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:53:39,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:53:39,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264840383] [2024-12-02 15:53:39,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:39,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:53:39,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:39,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:53:39,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:53:39,143 INFO L87 Difference]: Start difference. First operand 162479 states and 168442 transitions. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:43,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:43,792 INFO L93 Difference]: Finished difference Result 351746 states and 365678 transitions. [2024-12-02 15:53:43,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:53:43,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1044 [2024-12-02 15:53:43,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:43,990 INFO L225 Difference]: With dead ends: 351746 [2024-12-02 15:53:43,990 INFO L226 Difference]: Without dead ends: 208163 [2024-12-02 15:53:44,038 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 [2024-12-02 15:53:44,039 INFO L435 NwaCegarLoop]: 526 mSDtfsCounter, 957 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2361 mSolverCounterSat, 827 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 827 IncrementalHoareTripleChecker+Valid, 2361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:44,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 601 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [827 Valid, 2361 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-12-02 15:53:44,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208163 states. [2024-12-02 15:53:45,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208163 to 207369. [2024-12-02 15:53:45,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207369 states, 207368 states have (on average 1.035931291231048) internal successors, (214819), 207368 states have internal predecessors, (214819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:46,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207369 states to 207369 states and 214819 transitions. [2024-12-02 15:53:46,118 INFO L78 Accepts]: Start accepts. Automaton has 207369 states and 214819 transitions. Word has length 1044 [2024-12-02 15:53:46,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:46,119 INFO L471 AbstractCegarLoop]: Abstraction has 207369 states and 214819 transitions. [2024-12-02 15:53:46,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:46,119 INFO L276 IsEmpty]: Start isEmpty. Operand 207369 states and 214819 transitions. [2024-12-02 15:53:46,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1301 [2024-12-02 15:53:46,276 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:46,276 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:46,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 15:53:46,276 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:46,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:46,277 INFO L85 PathProgramCache]: Analyzing trace with hash -326261549, now seen corresponding path program 1 times [2024-12-02 15:53:46,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:46,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720251819] [2024-12-02 15:53:46,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:46,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:48,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1298 backedges. 1029 proven. 75 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-12-02 15:53:48,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:48,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720251819] [2024-12-02 15:53:48,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720251819] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:53:48,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321390244] [2024-12-02 15:53:48,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:48,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:48,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:53:48,682 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:53:48,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 15:53:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:49,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 15:53:49,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:53:49,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1298 backedges. 808 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-12-02 15:53:49,624 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:53:49,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321390244] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:49,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:53:49,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-12-02 15:53:49,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419998487] [2024-12-02 15:53:49,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:49,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:53:49,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:49,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:53:49,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:53:49,626 INFO L87 Difference]: Start difference. First operand 207369 states and 214819 transitions. Second operand has 3 states, 3 states have (on average 348.6666666666667) internal successors, (1046), 3 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:53,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:53,284 INFO L93 Difference]: Finished difference Result 413164 states and 428002 transitions. [2024-12-02 15:53:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:53:53,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 348.6666666666667) internal successors, (1046), 3 states have internal predecessors, (1046), 0 states have call successors, (0), 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 1300 [2024-12-02 15:53:53,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:53,479 INFO L225 Difference]: With dead ends: 413164 [2024-12-02 15:53:53,480 INFO L226 Difference]: Without dead ends: 206584 [2024-12-02 15:53:53,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1303 GetRequests, 1299 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:53:53,551 INFO L435 NwaCegarLoop]: 1577 mSDtfsCounter, 151 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2345 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 2583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:53,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1697 Invalid, 2583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 2345 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 15:53:53,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206584 states. [2024-12-02 15:53:55,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206584 to 204216. [2024-12-02 15:53:55,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204216 states, 204215 states have (on average 1.0322013564135837) internal successors, (210791), 204215 states have internal predecessors, (210791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:55,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204216 states to 204216 states and 210791 transitions. [2024-12-02 15:53:55,833 INFO L78 Accepts]: Start accepts. Automaton has 204216 states and 210791 transitions. Word has length 1300 [2024-12-02 15:53:55,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:55,834 INFO L471 AbstractCegarLoop]: Abstraction has 204216 states and 210791 transitions. [2024-12-02 15:53:55,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 348.6666666666667) internal successors, (1046), 3 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:55,834 INFO L276 IsEmpty]: Start isEmpty. Operand 204216 states and 210791 transitions. [2024-12-02 15:53:56,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1375 [2024-12-02 15:53:56,004 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:56,005 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:56,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 15:53:56,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:56,205 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:56,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:56,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1954513220, now seen corresponding path program 1 times [2024-12-02 15:53:56,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:56,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959670123] [2024-12-02 15:53:56,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:56,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1470 backedges. 973 proven. 0 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2024-12-02 15:53:57,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:57,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959670123] [2024-12-02 15:53:57,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959670123] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:57,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:53:57,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:53:57,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135866216] [2024-12-02 15:53:57,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:57,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:53:57,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:57,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:53:57,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:53:57,146 INFO L87 Difference]: Start difference. First operand 204216 states and 210791 transitions. Second operand has 3 states, 3 states have (on average 324.6666666666667) internal successors, (974), 3 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:01,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:54:01,454 INFO L93 Difference]: Finished difference Result 413928 states and 427889 transitions. [2024-12-02 15:54:01,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:54:01,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 324.6666666666667) internal successors, (974), 3 states have internal predecessors, (974), 0 states have call successors, (0), 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 1374 [2024-12-02 15:54:01,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:54:01,684 INFO L225 Difference]: With dead ends: 413928 [2024-12-02 15:54:01,684 INFO L226 Difference]: Without dead ends: 226247 [2024-12-02 15:54:01,764 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 [2024-12-02 15:54:01,765 INFO L435 NwaCegarLoop]: 456 mSDtfsCounter, 689 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 953 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 3212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 953 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:54:01,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 505 Invalid, 3212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [953 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 15:54:01,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226247 states. [2024-12-02 15:54:03,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226247 to 192376. [2024-12-02 15:54:03,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192376 states, 192375 states have (on average 1.0317141000649772) internal successors, (198476), 192375 states have internal predecessors, (198476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:03,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192376 states to 192376 states and 198476 transitions. [2024-12-02 15:54:03,719 INFO L78 Accepts]: Start accepts. Automaton has 192376 states and 198476 transitions. Word has length 1374 [2024-12-02 15:54:03,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:54:03,720 INFO L471 AbstractCegarLoop]: Abstraction has 192376 states and 198476 transitions. [2024-12-02 15:54:03,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.6666666666667) internal successors, (974), 3 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:03,720 INFO L276 IsEmpty]: Start isEmpty. Operand 192376 states and 198476 transitions. [2024-12-02 15:54:03,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1552 [2024-12-02 15:54:03,829 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:54:03,829 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:54:03,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 15:54:03,829 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:54:03,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:54:03,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1679097562, now seen corresponding path program 1 times [2024-12-02 15:54:03,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:54:03,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447525260] [2024-12-02 15:54:03,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:54:03,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:54:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:54:05,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2141 backedges. 1510 proven. 0 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2024-12-02 15:54:05,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:54:05,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447525260] [2024-12-02 15:54:05,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447525260] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:54:05,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:54:05,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:54:05,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073661273] [2024-12-02 15:54:05,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:54:05,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:54:05,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:54:05,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:54:05,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:54:05,840 INFO L87 Difference]: Start difference. First operand 192376 states and 198476 transitions. Second operand has 4 states, 4 states have (on average 267.5) internal successors, (1070), 3 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:11,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:54:11,383 INFO L93 Difference]: Finished difference Result 448547 states and 462950 transitions. [2024-12-02 15:54:11,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:54:11,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 267.5) internal successors, (1070), 3 states have internal predecessors, (1070), 0 states have call successors, (0), 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 1551 [2024-12-02 15:54:11,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:54:11,623 INFO L225 Difference]: With dead ends: 448547 [2024-12-02 15:54:11,623 INFO L226 Difference]: Without dead ends: 272706 [2024-12-02 15:54:11,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:54:11,691 INFO L435 NwaCegarLoop]: 571 mSDtfsCounter, 1415 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 5074 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 5529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 5074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:54:11,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 831 Invalid, 5529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 5074 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-12-02 15:54:11,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272706 states. [2024-12-02 15:54:13,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272706 to 267968. [2024-12-02 15:54:13,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267968 states, 267967 states have (on average 1.029664100430277) internal successors, (275916), 267967 states have internal predecessors, (275916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:14,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267968 states to 267968 states and 275916 transitions. [2024-12-02 15:54:14,173 INFO L78 Accepts]: Start accepts. Automaton has 267968 states and 275916 transitions. Word has length 1551 [2024-12-02 15:54:14,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:54:14,174 INFO L471 AbstractCegarLoop]: Abstraction has 267968 states and 275916 transitions. [2024-12-02 15:54:14,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 267.5) internal successors, (1070), 3 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:14,174 INFO L276 IsEmpty]: Start isEmpty. Operand 267968 states and 275916 transitions. [2024-12-02 15:54:14,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1657 [2024-12-02 15:54:14,600 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:54:14,600 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:54:14,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 15:54:14,600 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:54:14,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:54:14,601 INFO L85 PathProgramCache]: Analyzing trace with hash 366706761, now seen corresponding path program 1 times [2024-12-02 15:54:14,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:54:14,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536907735] [2024-12-02 15:54:14,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:54:14,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:54:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:54:17,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3369 backedges. 2120 proven. 75 refuted. 0 times theorem prover too weak. 1174 trivial. 0 not checked. [2024-12-02 15:54:17,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:54:17,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536907735] [2024-12-02 15:54:17,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536907735] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:54:17,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637256435] [2024-12-02 15:54:17,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:54:17,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:54:17,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:54:17,647 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:54:17,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 15:54:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:54:18,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 1936 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 15:54:18,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:54:18,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3369 backedges. 2258 proven. 0 refuted. 0 times theorem prover too weak. 1111 trivial. 0 not checked. [2024-12-02 15:54:18,674 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:54:18,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637256435] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:54:18,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:54:18,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-12-02 15:54:18,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086484940] [2024-12-02 15:54:18,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:54:18,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:54:18,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:54:18,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:54:18,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:54:18,676 INFO L87 Difference]: Start difference. First operand 267968 states and 275916 transitions. Second operand has 4 states, 4 states have (on average 270.0) internal successors, (1080), 4 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:23,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:54:23,233 INFO L93 Difference]: Finished difference Result 520979 states and 536716 transitions. [2024-12-02 15:54:23,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:54:23,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 270.0) internal successors, (1080), 4 states have internal predecessors, (1080), 0 states have call successors, (0), 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 1656 [2024-12-02 15:54:23,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:54:23,477 INFO L225 Difference]: With dead ends: 520979 [2024-12-02 15:54:23,477 INFO L226 Difference]: Without dead ends: 269546 [2024-12-02 15:54:23,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1659 GetRequests, 1656 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:54:23,570 INFO L435 NwaCegarLoop]: 583 mSDtfsCounter, 2390 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 3210 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2390 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 3639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 3210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:54:23,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2390 Valid, 722 Invalid, 3639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 3210 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-12-02 15:54:23,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269546 states. [2024-12-02 15:54:25,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269546 to 268755. [2024-12-02 15:54:25,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268755 states, 268754 states have (on average 1.0282786488759237) internal successors, (276354), 268754 states have internal predecessors, (276354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:26,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268755 states to 268755 states and 276354 transitions. [2024-12-02 15:54:26,180 INFO L78 Accepts]: Start accepts. Automaton has 268755 states and 276354 transitions. Word has length 1656 [2024-12-02 15:54:26,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:54:26,181 INFO L471 AbstractCegarLoop]: Abstraction has 268755 states and 276354 transitions. [2024-12-02 15:54:26,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 270.0) internal successors, (1080), 4 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:26,181 INFO L276 IsEmpty]: Start isEmpty. Operand 268755 states and 276354 transitions. [2024-12-02 15:54:26,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1701 [2024-12-02 15:54:26,362 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:54:26,362 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:54:26,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 15:54:26,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:54:26,563 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:54:26,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:54:26,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1946592262, now seen corresponding path program 1 times [2024-12-02 15:54:26,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:54:26,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347648748] [2024-12-02 15:54:26,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:54:26,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:54:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:54:29,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3038 backedges. 1769 proven. 638 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2024-12-02 15:54:29,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:54:29,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347648748] [2024-12-02 15:54:29,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347648748] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:54:29,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821547064] [2024-12-02 15:54:29,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:54:29,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:54:29,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:54:29,809 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:54:29,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 15:54:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:54:30,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 1962 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 15:54:30,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:54:30,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3038 backedges. 1123 proven. 0 refuted. 0 times theorem prover too weak. 1915 trivial. 0 not checked. [2024-12-02 15:54:30,508 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:54:30,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821547064] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:54:30,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:54:30,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-12-02 15:54:30,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938621421] [2024-12-02 15:54:30,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:54:30,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:54:30,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:54:30,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:54:30,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:54:30,511 INFO L87 Difference]: Start difference. First operand 268755 states and 276354 transitions. Second operand has 4 states, 4 states have (on average 228.0) internal successors, (912), 3 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:36,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:54:36,495 INFO L93 Difference]: Finished difference Result 562004 states and 577915 transitions. [2024-12-02 15:54:36,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:54:36,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 228.0) internal successors, (912), 3 states have internal predecessors, (912), 0 states have call successors, (0), 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 1700 [2024-12-02 15:54:36,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:54:36,763 INFO L225 Difference]: With dead ends: 562004 [2024-12-02 15:54:36,763 INFO L226 Difference]: Without dead ends: 299547 [2024-12-02 15:54:36,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1703 GetRequests, 1698 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:54:36,866 INFO L435 NwaCegarLoop]: 586 mSDtfsCounter, 1615 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 5298 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 5915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 5298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-12-02 15:54:36,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1615 Valid, 743 Invalid, 5915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 5298 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-12-02 15:54:37,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299547 states. [2024-12-02 15:54:39,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299547 to 290801. [2024-12-02 15:54:39,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290801 states, 290800 states have (on average 1.028235900962861) internal successors, (299011), 290800 states have internal predecessors, (299011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:40,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290801 states to 290801 states and 299011 transitions. [2024-12-02 15:54:40,129 INFO L78 Accepts]: Start accepts. Automaton has 290801 states and 299011 transitions. Word has length 1700 [2024-12-02 15:54:40,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:54:40,129 INFO L471 AbstractCegarLoop]: Abstraction has 290801 states and 299011 transitions. [2024-12-02 15:54:40,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 228.0) internal successors, (912), 3 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:40,130 INFO L276 IsEmpty]: Start isEmpty. Operand 290801 states and 299011 transitions. [2024-12-02 15:54:40,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1803 [2024-12-02 15:54:40,268 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:54:40,269 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:54:40,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 15:54:40,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e7f24b-344c-4b20-a99a-4005c1f71d4a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 15:54:40,470 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:54:40,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:54:40,470 INFO L85 PathProgramCache]: Analyzing trace with hash -951974676, now seen corresponding path program 1 times [2024-12-02 15:54:40,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:54:40,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429302044] [2024-12-02 15:54:40,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:54:40,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:54:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:54:42,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3287 backedges. 2154 proven. 0 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2024-12-02 15:54:42,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:54:42,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429302044] [2024-12-02 15:54:42,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429302044] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:54:42,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:54:42,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:54:42,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863501157] [2024-12-02 15:54:42,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:54:42,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:54:42,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:54:42,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:54:42,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:54:42,129 INFO L87 Difference]: Start difference. First operand 290801 states and 299011 transitions. Second operand has 3 states, 3 states have (on average 401.3333333333333) internal successors, (1204), 3 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:46,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:54:46,181 INFO L93 Difference]: Finished difference Result 566660 states and 582864 transitions. [2024-12-02 15:54:46,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:54:46,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 401.3333333333333) internal successors, (1204), 3 states have internal predecessors, (1204), 0 states have call successors, (0), 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 1802 [2024-12-02 15:54:46,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:54:46,465 INFO L225 Difference]: With dead ends: 566660 [2024-12-02 15:54:46,465 INFO L226 Difference]: Without dead ends: 290819 [2024-12-02 15:54:46,566 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 [2024-12-02 15:54:46,567 INFO L435 NwaCegarLoop]: 1570 mSDtfsCounter, 720 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 2523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:54:46,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 1692 Invalid, 2523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 15:54:46,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290819 states. [2024-12-02 15:54:48,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290819 to 286865. [2024-12-02 15:54:49,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286865 states, 286864 states have (on average 1.0261517652964471) internal successors, (294366), 286864 states have internal predecessors, (294366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:49,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286865 states to 286865 states and 294366 transitions. [2024-12-02 15:54:49,551 INFO L78 Accepts]: Start accepts. Automaton has 286865 states and 294366 transitions. Word has length 1802 [2024-12-02 15:54:49,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:54:49,551 INFO L471 AbstractCegarLoop]: Abstraction has 286865 states and 294366 transitions. [2024-12-02 15:54:49,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 401.3333333333333) internal successors, (1204), 3 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:49,552 INFO L276 IsEmpty]: Start isEmpty. Operand 286865 states and 294366 transitions. [2024-12-02 15:54:49,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1971 [2024-12-02 15:54:49,736 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:54:49,737 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:54:49,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 15:54:49,737 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:54:49,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:54:49,738 INFO L85 PathProgramCache]: Analyzing trace with hash 261790370, now seen corresponding path program 1 times [2024-12-02 15:54:49,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:54:49,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690817731] [2024-12-02 15:54:49,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:54:49,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:54:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat