./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem19_label50.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_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/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_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem19_label50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/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_f5e566ae-efca-43f0-b6d3-1cdd36c68347/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 213e82f0c3aaf6f1d8296810defaeb904267dfe53482b301d593c63d0f165dcd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:30:05,471 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:30:05,539 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 06:30:05,545 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:30:05,546 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:30:05,573 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:30:05,573 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:30:05,573 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:30:05,574 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:30:05,574 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:30:05,574 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:30:05,574 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:30:05,575 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:30:05,575 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:30:05,575 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:30:05,575 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:30:05,575 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:30:05,575 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:30:05,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:30:05,575 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:30:05,576 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:30:05,576 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:30:05,576 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:30:05,576 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:30:05,576 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:30:05,576 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:30:05,576 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:30:05,576 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:30:05,576 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:30:05,576 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:30:05,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:30:05,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:30:05,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:30:05,577 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:30:05,577 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:30:05,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:30:05,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:30:05,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:30:05,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:30:05,578 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:30:05,578 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:30:05,578 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:30:05,578 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:30:05,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:30:05,578 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:30:05,579 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:30:05,579 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:30:05,579 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:30:05,579 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_f5e566ae-efca-43f0-b6d3-1cdd36c68347/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 -> 213e82f0c3aaf6f1d8296810defaeb904267dfe53482b301d593c63d0f165dcd [2024-12-02 06:30:05,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:30:05,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:30:05,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:30:05,891 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:30:05,892 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:30:05,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/eca-rers2012/Problem19_label50.c [2024-12-02 06:30:09,292 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/data/0defa3e03/f940f325ec1b47feb5cc958420562275/FLAG874979ade [2024-12-02 06:30:09,918 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:30:09,919 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/sv-benchmarks/c/eca-rers2012/Problem19_label50.c [2024-12-02 06:30:09,976 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/data/0defa3e03/f940f325ec1b47feb5cc958420562275/FLAG874979ade [2024-12-02 06:30:10,352 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/data/0defa3e03/f940f325ec1b47feb5cc958420562275 [2024-12-02 06:30:10,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:30:10,357 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:30:10,359 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:30:10,359 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:30:10,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:30:10,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:30:10" (1/1) ... [2024-12-02 06:30:10,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4af3633e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:10, skipping insertion in model container [2024-12-02 06:30:10,367 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:30:10" (1/1) ... [2024-12-02 06:30:10,551 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:30:10,836 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_f5e566ae-efca-43f0-b6d3-1cdd36c68347/sv-benchmarks/c/eca-rers2012/Problem19_label50.c[3006,3019] [2024-12-02 06:30:12,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:30:12,228 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:30:12,246 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_f5e566ae-efca-43f0-b6d3-1cdd36c68347/sv-benchmarks/c/eca-rers2012/Problem19_label50.c[3006,3019] [2024-12-02 06:30:13,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:30:13,270 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:30:13,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:13 WrapperNode [2024-12-02 06:30:13,271 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:30:13,272 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:30:13,272 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:30:13,272 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:30:13,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:13" (1/1) ... [2024-12-02 06:30:13,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:13" (1/1) ... [2024-12-02 06:30:14,242 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9430 [2024-12-02 06:30:14,245 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:30:14,246 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:30:14,246 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:30:14,246 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:30:14,259 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:13" (1/1) ... [2024-12-02 06:30:14,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:13" (1/1) ... [2024-12-02 06:30:14,462 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:13" (1/1) ... [2024-12-02 06:30:14,792 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 06:30:14,792 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:13" (1/1) ... [2024-12-02 06:30:14,792 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:13" (1/1) ... [2024-12-02 06:30:15,110 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:13" (1/1) ... [2024-12-02 06:30:15,126 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:13" (1/1) ... [2024-12-02 06:30:15,178 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:13" (1/1) ... [2024-12-02 06:30:15,233 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:13" (1/1) ... [2024-12-02 06:30:15,253 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:13" (1/1) ... [2024-12-02 06:30:15,342 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:30:15,343 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:30:15,343 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:30:15,343 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:30:15,344 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:13" (1/1) ... [2024-12-02 06:30:15,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:30:15,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:30:15,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:30:15,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:30:15,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:30:15,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:30:15,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:30:15,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:30:15,476 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:30:15,478 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:30:25,333 INFO L? ?]: Removed 1320 outVars from TransFormulas that were not future-live. [2024-12-02 06:30:25,334 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:30:25,385 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:30:25,385 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 06:30:25,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:30:25 BoogieIcfgContainer [2024-12-02 06:30:25,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:30:25,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:30:25,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:30:25,396 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:30:25,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:30:10" (1/3) ... [2024-12-02 06:30:25,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e752ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:30:25, skipping insertion in model container [2024-12-02 06:30:25,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:13" (2/3) ... [2024-12-02 06:30:25,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e752ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:30:25, skipping insertion in model container [2024-12-02 06:30:25,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:30:25" (3/3) ... [2024-12-02 06:30:25,399 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem19_label50.c [2024-12-02 06:30:25,418 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:30:25,420 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem19_label50.c that has 1 procedures, 1748 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 06:30:25,541 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:30:25,556 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;@66b940ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:30:25,556 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:30:25,568 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 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 06:30:25,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-02 06:30:25,574 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:25,575 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:25,576 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:25,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:25,582 INFO L85 PathProgramCache]: Analyzing trace with hash -279853278, now seen corresponding path program 1 times [2024-12-02 06:30:25,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:25,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713396188] [2024-12-02 06:30:25,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:25,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:25,857 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 06:30:25,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:25,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713396188] [2024-12-02 06:30:25,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713396188] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:25,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:30:25,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:30:25,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282260375] [2024-12-02 06:30:25,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:25,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:30:25,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:25,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:30:25,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:30:25,893 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 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 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:30:33,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:33,947 INFO L93 Difference]: Finished difference Result 4919 states and 9313 transitions. [2024-12-02 06:30:33,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:30:33,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-12-02 06:30:33,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:33,978 INFO L225 Difference]: With dead ends: 4919 [2024-12-02 06:30:33,978 INFO L226 Difference]: Without dead ends: 3107 [2024-12-02 06:30:33,984 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 06:30:33,987 INFO L435 NwaCegarLoop]: 1276 mSDtfsCounter, 1533 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 4638 mSolverCounterSat, 1110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 5748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1110 IncrementalHoareTripleChecker+Valid, 4638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:33,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 1457 Invalid, 5748 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1110 Valid, 4638 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2024-12-02 06:30:34,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3107 states. [2024-12-02 06:30:34,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3107 to 3106. [2024-12-02 06:30:34,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3106 states, 3105 states have (on average 1.652818035426731) internal successors, (5132), 3105 states have internal predecessors, (5132), 0 states have call successors, (0), 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 06:30:34,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 5132 transitions. [2024-12-02 06:30:34,133 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 5132 transitions. Word has length 20 [2024-12-02 06:30:34,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:34,133 INFO L471 AbstractCegarLoop]: Abstraction has 3106 states and 5132 transitions. [2024-12-02 06:30:34,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:30:34,133 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 5132 transitions. [2024-12-02 06:30:34,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 06:30:34,239 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:34,240 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:34,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:30:34,240 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:34,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:34,242 INFO L85 PathProgramCache]: Analyzing trace with hash 409967354, now seen corresponding path program 1 times [2024-12-02 06:30:34,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:34,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528166879] [2024-12-02 06:30:34,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:34,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:34,670 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:30:34,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:34,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528166879] [2024-12-02 06:30:34,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528166879] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:34,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:30:34,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:30:34,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302646000] [2024-12-02 06:30:34,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:34,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:30:34,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:34,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:30:34,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:30:34,674 INFO L87 Difference]: Start difference. First operand 3106 states and 5132 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 06:30:48,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:48,317 INFO L93 Difference]: Finished difference Result 10391 states and 16943 transitions. [2024-12-02 06:30:48,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:30:48,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2024-12-02 06:30:48,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:48,346 INFO L225 Difference]: With dead ends: 10391 [2024-12-02 06:30:48,346 INFO L226 Difference]: Without dead ends: 7287 [2024-12-02 06:30:48,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:30:48,351 INFO L435 NwaCegarLoop]: 1842 mSDtfsCounter, 4208 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 11122 mSolverCounterSat, 1405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4208 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 12527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1405 IncrementalHoareTripleChecker+Valid, 11122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:48,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4208 Valid, 2104 Invalid, 12527 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1405 Valid, 11122 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2024-12-02 06:30:48,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7287 states. [2024-12-02 06:30:48,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7287 to 7236. [2024-12-02 06:30:48,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 7235 states have (on average 1.5214927436074637) internal successors, (11008), 7235 states have internal predecessors, (11008), 0 states have call successors, (0), 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 06:30:48,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 11008 transitions. [2024-12-02 06:30:48,512 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 11008 transitions. Word has length 89 [2024-12-02 06:30:48,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:48,512 INFO L471 AbstractCegarLoop]: Abstraction has 7236 states and 11008 transitions. [2024-12-02 06:30:48,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 06:30:48,513 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 11008 transitions. [2024-12-02 06:30:48,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-12-02 06:30:48,518 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:48,518 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:30:48,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:30:48,519 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:48,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:48,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1210206043, now seen corresponding path program 1 times [2024-12-02 06:30:48,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:48,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322397536] [2024-12-02 06:30:48,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:48,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:30:49,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:49,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322397536] [2024-12-02 06:30:49,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322397536] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:49,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:30:49,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:30:49,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313010194] [2024-12-02 06:30:49,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:49,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:30:49,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:49,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:30:49,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:30:49,004 INFO L87 Difference]: Start difference. First operand 7236 states and 11008 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 06:30:56,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:56,417 INFO L93 Difference]: Finished difference Result 15858 states and 25896 transitions. [2024-12-02 06:30:56,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:30:56,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 255 [2024-12-02 06:30:56,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:56,439 INFO L225 Difference]: With dead ends: 15858 [2024-12-02 06:30:56,439 INFO L226 Difference]: Without dead ends: 9989 [2024-12-02 06:30:56,445 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 06:30:56,446 INFO L435 NwaCegarLoop]: 2905 mSDtfsCounter, 1591 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 3684 mSolverCounterSat, 1906 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 5590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1906 IncrementalHoareTripleChecker+Valid, 3684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:56,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1591 Valid, 3095 Invalid, 5590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1906 Valid, 3684 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-12-02 06:30:56,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9989 states. [2024-12-02 06:30:56,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9989 to 9987. [2024-12-02 06:30:56,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9987 states, 9986 states have (on average 1.4261966753454838) internal successors, (14242), 9986 states have internal predecessors, (14242), 0 states have call successors, (0), 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 06:30:56,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9987 states to 9987 states and 14242 transitions. [2024-12-02 06:30:56,662 INFO L78 Accepts]: Start accepts. Automaton has 9987 states and 14242 transitions. Word has length 255 [2024-12-02 06:30:56,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:56,665 INFO L471 AbstractCegarLoop]: Abstraction has 9987 states and 14242 transitions. [2024-12-02 06:30:56,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 06:30:56,665 INFO L276 IsEmpty]: Start isEmpty. Operand 9987 states and 14242 transitions. [2024-12-02 06:30:56,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-12-02 06:30:56,677 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:56,678 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:30:56,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:30:56,678 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:56,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:56,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1002446385, now seen corresponding path program 1 times [2024-12-02 06:30:56,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:56,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265536013] [2024-12-02 06:30:56,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:56,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:30:57,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:57,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265536013] [2024-12-02 06:30:57,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265536013] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:57,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:30:57,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:30:57,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092177778] [2024-12-02 06:30:57,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:57,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:30:57,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:57,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:30:57,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:30:57,665 INFO L87 Difference]: Start difference. First operand 9987 states and 14242 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 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 06:31:04,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:04,344 INFO L93 Difference]: Finished difference Result 18638 states and 27136 transitions. [2024-12-02 06:31:04,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:31:04,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 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 322 [2024-12-02 06:31:04,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:04,373 INFO L225 Difference]: With dead ends: 18638 [2024-12-02 06:31:04,373 INFO L226 Difference]: Without dead ends: 9987 [2024-12-02 06:31:04,377 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 06:31:04,377 INFO L435 NwaCegarLoop]: 1764 mSDtfsCounter, 1151 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 5709 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 5717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:04,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 1943 Invalid, 5717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 5709 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-12-02 06:31:04,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9987 states. [2024-12-02 06:31:04,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9987 to 9987. [2024-12-02 06:31:04,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9987 states, 9986 states have (on average 1.4252954135790106) internal successors, (14233), 9986 states have internal predecessors, (14233), 0 states have call successors, (0), 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 06:31:04,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9987 states to 9987 states and 14233 transitions. [2024-12-02 06:31:04,513 INFO L78 Accepts]: Start accepts. Automaton has 9987 states and 14233 transitions. Word has length 322 [2024-12-02 06:31:04,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:04,514 INFO L471 AbstractCegarLoop]: Abstraction has 9987 states and 14233 transitions. [2024-12-02 06:31:04,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 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 06:31:04,514 INFO L276 IsEmpty]: Start isEmpty. Operand 9987 states and 14233 transitions. [2024-12-02 06:31:04,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2024-12-02 06:31:04,526 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:04,527 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:31:04,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 06:31:04,527 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:04,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:04,528 INFO L85 PathProgramCache]: Analyzing trace with hash -679234552, now seen corresponding path program 1 times [2024-12-02 06:31:04,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:04,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781974974] [2024-12-02 06:31:04,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:04,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 57 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:31:05,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:05,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781974974] [2024-12-02 06:31:05,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781974974] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:05,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521177594] [2024-12-02 06:31:05,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:05,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:05,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:05,497 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:05,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:31:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:05,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 06:31:05,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:06,142 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:31:06,144 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:31:06,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521177594] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:06,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:31:06,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-12-02 06:31:06,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435530283] [2024-12-02 06:31:06,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:06,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:31:06,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:06,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:31:06,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:31:06,148 INFO L87 Difference]: Start difference. First operand 9987 states and 14233 transitions. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 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 06:31:13,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:13,693 INFO L93 Difference]: Finished difference Result 26790 states and 39374 transitions. [2024-12-02 06:31:13,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:31:13,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 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 576 [2024-12-02 06:31:13,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:13,727 INFO L225 Difference]: With dead ends: 26790 [2024-12-02 06:31:13,728 INFO L226 Difference]: Without dead ends: 18170 [2024-12-02 06:31:13,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:31:13,736 INFO L435 NwaCegarLoop]: 703 mSDtfsCounter, 2531 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4050 mSolverCounterSat, 1472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2531 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 5522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1472 IncrementalHoareTripleChecker+Valid, 4050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:13,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2531 Valid, 813 Invalid, 5522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1472 Valid, 4050 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-12-02 06:31:13,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18170 states. [2024-12-02 06:31:13,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18170 to 18169. [2024-12-02 06:31:13,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18169 states, 18168 states have (on average 1.4180427124614707) internal successors, (25763), 18168 states have internal predecessors, (25763), 0 states have call successors, (0), 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 06:31:13,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18169 states to 18169 states and 25763 transitions. [2024-12-02 06:31:13,923 INFO L78 Accepts]: Start accepts. Automaton has 18169 states and 25763 transitions. Word has length 576 [2024-12-02 06:31:13,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:13,924 INFO L471 AbstractCegarLoop]: Abstraction has 18169 states and 25763 transitions. [2024-12-02 06:31:13,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 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 06:31:13,925 INFO L276 IsEmpty]: Start isEmpty. Operand 18169 states and 25763 transitions. [2024-12-02 06:31:13,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2024-12-02 06:31:13,937 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:13,937 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:31:13,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:31:14,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:14,138 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:14,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:14,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1510882950, now seen corresponding path program 1 times [2024-12-02 06:31:14,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:14,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291167385] [2024-12-02 06:31:14,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:14,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-12-02 06:31:14,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:14,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291167385] [2024-12-02 06:31:14,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291167385] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:14,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:31:14,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:31:14,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810025447] [2024-12-02 06:31:14,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:14,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:31:14,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:14,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:31:14,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:31:14,611 INFO L87 Difference]: Start difference. First operand 18169 states and 25763 transitions. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 2 states have internal predecessors, (500), 0 states have call successors, (0), 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 06:31:21,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:21,499 INFO L93 Difference]: Finished difference Result 40438 states and 57708 transitions. [2024-12-02 06:31:21,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:31:21,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 2 states have internal predecessors, (500), 0 states have call successors, (0), 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 583 [2024-12-02 06:31:21,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:21,540 INFO L225 Difference]: With dead ends: 40438 [2024-12-02 06:31:21,541 INFO L226 Difference]: Without dead ends: 23636 [2024-12-02 06:31:21,555 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 06:31:21,556 INFO L435 NwaCegarLoop]: 686 mSDtfsCounter, 1391 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 3925 mSolverCounterSat, 1659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 5584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1659 IncrementalHoareTripleChecker+Valid, 3925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:21,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 732 Invalid, 5584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1659 Valid, 3925 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-12-02 06:31:21,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23636 states. [2024-12-02 06:31:21,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23636 to 23632. [2024-12-02 06:31:21,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23632 states, 23631 states have (on average 1.3269857390715585) internal successors, (31358), 23631 states have internal predecessors, (31358), 0 states have call successors, (0), 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 06:31:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23632 states to 23632 states and 31358 transitions. [2024-12-02 06:31:21,871 INFO L78 Accepts]: Start accepts. Automaton has 23632 states and 31358 transitions. Word has length 583 [2024-12-02 06:31:21,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:21,872 INFO L471 AbstractCegarLoop]: Abstraction has 23632 states and 31358 transitions. [2024-12-02 06:31:21,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 2 states have internal predecessors, (500), 0 states have call successors, (0), 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 06:31:21,872 INFO L276 IsEmpty]: Start isEmpty. Operand 23632 states and 31358 transitions. [2024-12-02 06:31:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2024-12-02 06:31:21,878 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:21,878 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:31:21,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 06:31:21,879 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:21,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:21,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1022618923, now seen corresponding path program 1 times [2024-12-02 06:31:21,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:21,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765202979] [2024-12-02 06:31:21,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:21,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:24,027 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 35 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:31:24,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:24,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765202979] [2024-12-02 06:31:24,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765202979] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:24,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916477529] [2024-12-02 06:31:24,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:24,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:24,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:24,036 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:24,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:31:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:24,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 06:31:24,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:24,470 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-12-02 06:31:24,470 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:31:24,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916477529] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:24,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:31:24,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-12-02 06:31:24,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807140708] [2024-12-02 06:31:24,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:24,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:31:24,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:24,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:31:24,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:31:24,473 INFO L87 Difference]: Start difference. First operand 23632 states and 31358 transitions. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 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 06:31:32,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:32,368 INFO L93 Difference]: Finished difference Result 67768 states and 90825 transitions. [2024-12-02 06:31:32,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:31:32,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 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 589 [2024-12-02 06:31:32,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:32,442 INFO L225 Difference]: With dead ends: 67768 [2024-12-02 06:31:32,442 INFO L226 Difference]: Without dead ends: 45503 [2024-12-02 06:31:32,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:31:32,460 INFO L435 NwaCegarLoop]: 1115 mSDtfsCounter, 1657 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 4129 mSolverCounterSat, 1842 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1657 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 5971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1842 IncrementalHoareTripleChecker+Valid, 4129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:32,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1657 Valid, 1264 Invalid, 5971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1842 Valid, 4129 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-12-02 06:31:32,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45503 states. [2024-12-02 06:31:32,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45503 to 45491. [2024-12-02 06:31:32,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45491 states, 45490 states have (on average 1.2633326005715542) internal successors, (57469), 45490 states have internal predecessors, (57469), 0 states have call successors, (0), 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 06:31:32,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45491 states to 45491 states and 57469 transitions. [2024-12-02 06:31:32,919 INFO L78 Accepts]: Start accepts. Automaton has 45491 states and 57469 transitions. Word has length 589 [2024-12-02 06:31:32,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:32,920 INFO L471 AbstractCegarLoop]: Abstraction has 45491 states and 57469 transitions. [2024-12-02 06:31:32,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 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 06:31:32,920 INFO L276 IsEmpty]: Start isEmpty. Operand 45491 states and 57469 transitions. [2024-12-02 06:31:32,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2024-12-02 06:31:32,923 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:32,924 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:31:32,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 06:31:33,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:33,124 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:33,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:33,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1874132742, now seen corresponding path program 1 times [2024-12-02 06:31:33,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:33,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396124993] [2024-12-02 06:31:33,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:33,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-12-02 06:31:33,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:33,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396124993] [2024-12-02 06:31:33,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396124993] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:33,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:31:33,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:31:33,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889932422] [2024-12-02 06:31:33,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:33,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:31:33,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:33,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:31:33,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:31:33,458 INFO L87 Difference]: Start difference. First operand 45491 states and 57469 transitions. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 2 states have internal predecessors, (500), 0 states have call successors, (0), 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 06:31:41,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:41,517 INFO L93 Difference]: Finished difference Result 130766 states and 165830 transitions. [2024-12-02 06:31:41,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:31:41,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 2 states have internal predecessors, (500), 0 states have call successors, (0), 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 614 [2024-12-02 06:31:41,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:41,596 INFO L225 Difference]: With dead ends: 130766 [2024-12-02 06:31:41,596 INFO L226 Difference]: Without dead ends: 86642 [2024-12-02 06:31:41,620 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 06:31:41,621 INFO L435 NwaCegarLoop]: 1859 mSDtfsCounter, 1354 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 4313 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 5743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:41,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 2121 Invalid, 5743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4313 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-12-02 06:31:41,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86642 states. [2024-12-02 06:31:42,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86642 to 78435. [2024-12-02 06:31:42,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78435 states, 78434 states have (on average 1.1852512940816482) internal successors, (92964), 78434 states have internal predecessors, (92964), 0 states have call successors, (0), 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 06:31:42,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78435 states to 78435 states and 92964 transitions. [2024-12-02 06:31:42,439 INFO L78 Accepts]: Start accepts. Automaton has 78435 states and 92964 transitions. Word has length 614 [2024-12-02 06:31:42,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:42,440 INFO L471 AbstractCegarLoop]: Abstraction has 78435 states and 92964 transitions. [2024-12-02 06:31:42,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 2 states have internal predecessors, (500), 0 states have call successors, (0), 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 06:31:42,440 INFO L276 IsEmpty]: Start isEmpty. Operand 78435 states and 92964 transitions. [2024-12-02 06:31:42,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2024-12-02 06:31:42,446 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:42,447 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:31:42,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 06:31:42,447 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:42,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:42,448 INFO L85 PathProgramCache]: Analyzing trace with hash 846316061, now seen corresponding path program 1 times [2024-12-02 06:31:42,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:42,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785948808] [2024-12-02 06:31:42,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:42,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 36 proven. 61 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2024-12-02 06:31:44,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:44,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785948808] [2024-12-02 06:31:44,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785948808] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:44,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105698064] [2024-12-02 06:31:44,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:44,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:44,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:44,373 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:44,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:31:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:44,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 1046 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 06:31:44,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2024-12-02 06:31:44,787 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:31:44,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105698064] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:44,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:31:44,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-12-02 06:31:44,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950235208] [2024-12-02 06:31:44,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:44,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:31:44,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:44,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:31:44,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:31:44,790 INFO L87 Difference]: Start difference. First operand 78435 states and 92964 transitions. Second operand has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 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 06:31:52,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:52,731 INFO L93 Difference]: Finished difference Result 158316 states and 187473 transitions. [2024-12-02 06:31:52,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:31:52,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 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 905 [2024-12-02 06:31:52,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:52,813 INFO L225 Difference]: With dead ends: 158316 [2024-12-02 06:31:52,813 INFO L226 Difference]: Without dead ends: 81248 [2024-12-02 06:31:52,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 908 GetRequests, 905 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 06:31:52,856 INFO L435 NwaCegarLoop]: 2893 mSDtfsCounter, 1513 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 4125 mSolverCounterSat, 1684 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 5809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1684 IncrementalHoareTripleChecker+Valid, 4125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:52,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 3064 Invalid, 5809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1684 Valid, 4125 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-12-02 06:31:52,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81248 states. [2024-12-02 06:31:53,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81248 to 78449. [2024-12-02 06:31:53,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78449 states, 78448 states have (on average 1.1307107893126658) internal successors, (88702), 78448 states have internal predecessors, (88702), 0 states have call successors, (0), 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 06:31:53,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78449 states to 78449 states and 88702 transitions. [2024-12-02 06:31:53,701 INFO L78 Accepts]: Start accepts. Automaton has 78449 states and 88702 transitions. Word has length 905 [2024-12-02 06:31:53,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:53,701 INFO L471 AbstractCegarLoop]: Abstraction has 78449 states and 88702 transitions. [2024-12-02 06:31:53,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 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 06:31:53,702 INFO L276 IsEmpty]: Start isEmpty. Operand 78449 states and 88702 transitions. [2024-12-02 06:31:53,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2024-12-02 06:31:53,709 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:53,709 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:31:53,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 06:31:53,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:53,910 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:53,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:53,911 INFO L85 PathProgramCache]: Analyzing trace with hash -501159179, now seen corresponding path program 1 times [2024-12-02 06:31:53,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:53,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642736571] [2024-12-02 06:31:53,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:53,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:54,386 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2024-12-02 06:31:54,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:54,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642736571] [2024-12-02 06:31:54,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642736571] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:54,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:31:54,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:31:54,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658414267] [2024-12-02 06:31:54,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:54,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:31:54,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:54,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:31:54,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:31:54,389 INFO L87 Difference]: Start difference. First operand 78449 states and 88702 transitions. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 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 06:32:01,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:32:01,064 INFO L93 Difference]: Finished difference Result 155537 states and 176043 transitions. [2024-12-02 06:32:01,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:32:01,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 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 921 [2024-12-02 06:32:01,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:32:01,146 INFO L225 Difference]: With dead ends: 155537 [2024-12-02 06:32:01,146 INFO L226 Difference]: Without dead ends: 78455 [2024-12-02 06:32:01,185 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 06:32:01,186 INFO L435 NwaCegarLoop]: 2861 mSDtfsCounter, 1327 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 4416 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 4815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 4416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:32:01,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 3053 Invalid, 4815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 4416 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-12-02 06:32:01,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78455 states. [2024-12-02 06:32:01,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78455 to 70258. [2024-12-02 06:32:01,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70258 states, 70257 states have (on average 1.1174117881492236) internal successors, (78506), 70257 states have internal predecessors, (78506), 0 states have call successors, (0), 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 06:32:02,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70258 states to 70258 states and 78506 transitions. [2024-12-02 06:32:02,013 INFO L78 Accepts]: Start accepts. Automaton has 70258 states and 78506 transitions. Word has length 921 [2024-12-02 06:32:02,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:32:02,014 INFO L471 AbstractCegarLoop]: Abstraction has 70258 states and 78506 transitions. [2024-12-02 06:32:02,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 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 06:32:02,014 INFO L276 IsEmpty]: Start isEmpty. Operand 70258 states and 78506 transitions. [2024-12-02 06:32:02,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2024-12-02 06:32:02,021 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:32:02,022 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:32:02,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 06:32:02,022 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:32:02,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:32:02,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1764164871, now seen corresponding path program 1 times [2024-12-02 06:32:02,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:32:02,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927501033] [2024-12-02 06:32:02,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:02,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:32:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:02,822 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2024-12-02 06:32:02,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:32:02,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927501033] [2024-12-02 06:32:02,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927501033] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:32:02,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:32:02,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:32:02,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962404745] [2024-12-02 06:32:02,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:32:02,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:32:02,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:32:02,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:32:02,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:32:02,824 INFO L87 Difference]: Start difference. First operand 70258 states and 78506 transitions. Second operand has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 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 06:32:11,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:32:11,267 INFO L93 Difference]: Finished difference Result 174719 states and 196671 transitions. [2024-12-02 06:32:11,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:32:11,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 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 954 [2024-12-02 06:32:11,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:32:11,361 INFO L225 Difference]: With dead ends: 174719 [2024-12-02 06:32:11,362 INFO L226 Difference]: Without dead ends: 104463 [2024-12-02 06:32:11,394 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 06:32:11,394 INFO L435 NwaCegarLoop]: 3164 mSDtfsCounter, 1394 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 5106 mSolverCounterSat, 859 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 3337 SdHoareTripleChecker+Invalid, 5965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 859 IncrementalHoareTripleChecker+Valid, 5106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:32:11,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 3337 Invalid, 5965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [859 Valid, 5106 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2024-12-02 06:32:11,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104463 states. [2024-12-02 06:32:12,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104463 to 103034. [2024-12-02 06:32:12,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103034 states, 103033 states have (on average 1.1030058330826047) internal successors, (113646), 103033 states have internal predecessors, (113646), 0 states have call successors, (0), 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 06:32:12,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103034 states to 103034 states and 113646 transitions. [2024-12-02 06:32:12,613 INFO L78 Accepts]: Start accepts. Automaton has 103034 states and 113646 transitions. Word has length 954 [2024-12-02 06:32:12,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:32:12,614 INFO L471 AbstractCegarLoop]: Abstraction has 103034 states and 113646 transitions. [2024-12-02 06:32:12,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 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 06:32:12,615 INFO L276 IsEmpty]: Start isEmpty. Operand 103034 states and 113646 transitions. [2024-12-02 06:32:12,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2024-12-02 06:32:12,627 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:32:12,628 INFO L218 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:32:12,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 06:32:12,628 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:32:12,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:32:12,629 INFO L85 PathProgramCache]: Analyzing trace with hash -508866882, now seen corresponding path program 1 times [2024-12-02 06:32:12,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:32:12,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236359548] [2024-12-02 06:32:12,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:12,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:32:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:14,469 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 54 proven. 479 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-12-02 06:32:14,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:32:14,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236359548] [2024-12-02 06:32:14,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236359548] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:32:14,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951568132] [2024-12-02 06:32:14,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:14,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:32:14,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:32:14,472 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:32:14,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 06:32:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:14,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 06:32:14,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:32:14,828 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2024-12-02 06:32:14,828 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:32:14,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951568132] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:32:14,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:32:14,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 06:32:14,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635068122] [2024-12-02 06:32:14,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:32:14,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:32:14,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:32:14,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:32:14,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:32:14,832 INFO L87 Difference]: Start difference. First operand 103034 states and 113646 transitions. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 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 06:32:23,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:32:23,031 INFO L93 Difference]: Finished difference Result 233373 states and 260530 transitions. [2024-12-02 06:32:23,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:32:23,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 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 966 [2024-12-02 06:32:23,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:32:23,202 INFO L225 Difference]: With dead ends: 233373 [2024-12-02 06:32:23,202 INFO L226 Difference]: Without dead ends: 133071 [2024-12-02 06:32:23,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 966 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:32:23,270 INFO L435 NwaCegarLoop]: 2795 mSDtfsCounter, 1596 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 3743 mSolverCounterSat, 1743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 2934 SdHoareTripleChecker+Invalid, 5486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1743 IncrementalHoareTripleChecker+Valid, 3743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:32:23,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1596 Valid, 2934 Invalid, 5486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1743 Valid, 3743 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-12-02 06:32:23,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133071 states. [2024-12-02 06:32:24,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133071 to 124869. [2024-12-02 06:32:24,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124869 states, 124868 states have (on average 1.1068648492808406) internal successors, (138212), 124868 states have internal predecessors, (138212), 0 states have call successors, (0), 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 06:32:25,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124869 states to 124869 states and 138212 transitions. [2024-12-02 06:32:25,011 INFO L78 Accepts]: Start accepts. Automaton has 124869 states and 138212 transitions. Word has length 966 [2024-12-02 06:32:25,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:32:25,012 INFO L471 AbstractCegarLoop]: Abstraction has 124869 states and 138212 transitions. [2024-12-02 06:32:25,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 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 06:32:25,012 INFO L276 IsEmpty]: Start isEmpty. Operand 124869 states and 138212 transitions. [2024-12-02 06:32:25,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1032 [2024-12-02 06:32:25,022 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:32:25,022 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:32:25,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 06:32:25,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:32:25,223 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:32:25,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:32:25,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1293242323, now seen corresponding path program 1 times [2024-12-02 06:32:25,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:32:25,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655422432] [2024-12-02 06:32:25,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:25,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:32:25,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:26,776 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2024-12-02 06:32:26,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:32:26,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655422432] [2024-12-02 06:32:26,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655422432] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:32:26,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:32:26,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:32:26,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633421183] [2024-12-02 06:32:26,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:32:26,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:32:26,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:32:26,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:32:26,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:32:26,779 INFO L87 Difference]: Start difference. First operand 124869 states and 138212 transitions. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 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 06:32:33,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:32:33,443 INFO L93 Difference]: Finished difference Result 252471 states and 279257 transitions. [2024-12-02 06:32:33,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:32:33,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 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 1031 [2024-12-02 06:32:33,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:32:33,586 INFO L225 Difference]: With dead ends: 252471 [2024-12-02 06:32:33,586 INFO L226 Difference]: Without dead ends: 130334 [2024-12-02 06:32:33,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 06:32:33,650 INFO L435 NwaCegarLoop]: 2106 mSDtfsCounter, 1727 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 3897 mSolverCounterSat, 1401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 5298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1401 IncrementalHoareTripleChecker+Valid, 3897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:32:33,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 2158 Invalid, 5298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1401 Valid, 3897 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-12-02 06:32:33,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130334 states. [2024-12-02 06:32:35,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130334 to 126234. [2024-12-02 06:32:35,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126234 states, 126233 states have (on average 1.0930659970055374) internal successors, (137981), 126233 states have internal predecessors, (137981), 0 states have call successors, (0), 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 06:32:35,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126234 states to 126234 states and 137981 transitions. [2024-12-02 06:32:35,273 INFO L78 Accepts]: Start accepts. Automaton has 126234 states and 137981 transitions. Word has length 1031 [2024-12-02 06:32:35,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:32:35,274 INFO L471 AbstractCegarLoop]: Abstraction has 126234 states and 137981 transitions. [2024-12-02 06:32:35,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 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 06:32:35,274 INFO L276 IsEmpty]: Start isEmpty. Operand 126234 states and 137981 transitions. [2024-12-02 06:32:35,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1107 [2024-12-02 06:32:35,287 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:32:35,288 INFO L218 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:32:35,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 06:32:35,288 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:32:35,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:32:35,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2023026828, now seen corresponding path program 1 times [2024-12-02 06:32:35,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:32:35,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569338040] [2024-12-02 06:32:35,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:35,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:32:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:36,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 763 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2024-12-02 06:32:36,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:32:36,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569338040] [2024-12-02 06:32:36,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569338040] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:32:36,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:32:36,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:32:36,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853307642] [2024-12-02 06:32:36,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:32:36,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:32:36,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:32:36,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:32:36,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:32:36,288 INFO L87 Difference]: Start difference. First operand 126234 states and 137981 transitions. Second operand has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 0 states have call successors, (0), 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 06:32:42,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:32:42,849 INFO L93 Difference]: Finished difference Result 249741 states and 273234 transitions. [2024-12-02 06:32:42,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:32:42,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 0 states have call successors, (0), 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 1106 [2024-12-02 06:32:42,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:32:42,999 INFO L225 Difference]: With dead ends: 249741 [2024-12-02 06:32:43,000 INFO L226 Difference]: Without dead ends: 126239 [2024-12-02 06:32:43,045 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 06:32:43,045 INFO L435 NwaCegarLoop]: 2856 mSDtfsCounter, 1262 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 4408 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 3045 SdHoareTripleChecker+Invalid, 4502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 4408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:32:43,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 3045 Invalid, 4502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 4408 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-12-02 06:32:43,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126239 states. [2024-12-02 06:32:44,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126239 to 126232. [2024-12-02 06:32:44,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126232 states, 126231 states have (on average 1.0930516275716742) internal successors, (137977), 126231 states have internal predecessors, (137977), 0 states have call successors, (0), 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 06:32:44,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126232 states to 126232 states and 137977 transitions. [2024-12-02 06:32:44,705 INFO L78 Accepts]: Start accepts. Automaton has 126232 states and 137977 transitions. Word has length 1106 [2024-12-02 06:32:44,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:32:44,705 INFO L471 AbstractCegarLoop]: Abstraction has 126232 states and 137977 transitions. [2024-12-02 06:32:44,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 0 states have call successors, (0), 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 06:32:44,706 INFO L276 IsEmpty]: Start isEmpty. Operand 126232 states and 137977 transitions. [2024-12-02 06:32:44,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1117 [2024-12-02 06:32:44,717 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:32:44,718 INFO L218 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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 06:32:44,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 06:32:44,718 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:32:44,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:32:44,719 INFO L85 PathProgramCache]: Analyzing trace with hash -887541410, now seen corresponding path program 1 times [2024-12-02 06:32:44,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:32:44,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643348234] [2024-12-02 06:32:44,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:44,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:32:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:46,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 781 proven. 0 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2024-12-02 06:32:46,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:32:46,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643348234] [2024-12-02 06:32:46,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643348234] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:32:46,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:32:46,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:32:46,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475376656] [2024-12-02 06:32:46,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:32:46,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:32:46,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:32:46,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:32:46,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:32:46,361 INFO L87 Difference]: Start difference. First operand 126232 states and 137977 transitions. Second operand has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 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 06:32:53,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:32:53,440 INFO L93 Difference]: Finished difference Result 248369 states and 271612 transitions. [2024-12-02 06:32:53,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:32:53,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 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 1116 [2024-12-02 06:32:53,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:32:53,563 INFO L225 Difference]: With dead ends: 248369 [2024-12-02 06:32:53,563 INFO L226 Difference]: Without dead ends: 124869 [2024-12-02 06:32:53,621 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 06:32:53,622 INFO L435 NwaCegarLoop]: 681 mSDtfsCounter, 1626 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4662 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 5409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 4662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:32:53,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1626 Valid, 753 Invalid, 5409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 4662 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-12-02 06:32:53,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124869 states. [2024-12-02 06:32:54,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124869 to 123497. [2024-12-02 06:32:54,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123497 states, 123496 states have (on average 1.0744801451059143) internal successors, (132694), 123496 states have internal predecessors, (132694), 0 states have call successors, (0), 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 06:32:55,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123497 states to 123497 states and 132694 transitions. [2024-12-02 06:32:55,067 INFO L78 Accepts]: Start accepts. Automaton has 123497 states and 132694 transitions. Word has length 1116 [2024-12-02 06:32:55,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:32:55,067 INFO L471 AbstractCegarLoop]: Abstraction has 123497 states and 132694 transitions. [2024-12-02 06:32:55,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 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 06:32:55,068 INFO L276 IsEmpty]: Start isEmpty. Operand 123497 states and 132694 transitions. [2024-12-02 06:32:55,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1122 [2024-12-02 06:32:55,080 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:32:55,080 INFO L218 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:32:55,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 06:32:55,080 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:32:55,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:32:55,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1759443305, now seen corresponding path program 1 times [2024-12-02 06:32:55,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:32:55,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836886725] [2024-12-02 06:32:55,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:55,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:32:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:56,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1119 backedges. 796 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2024-12-02 06:32:56,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:32:56,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836886725] [2024-12-02 06:32:56,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836886725] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:32:56,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:32:56,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:32:56,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051491561] [2024-12-02 06:32:56,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:32:56,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:32:56,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:32:56,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:32:56,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:32:56,776 INFO L87 Difference]: Start difference. First operand 123497 states and 132694 transitions. Second operand has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 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 06:33:05,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:05,553 INFO L93 Difference]: Finished difference Result 288026 states and 311170 transitions. [2024-12-02 06:33:05,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:33:05,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 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 1121 [2024-12-02 06:33:05,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:05,714 INFO L225 Difference]: With dead ends: 288026 [2024-12-02 06:33:05,714 INFO L226 Difference]: Without dead ends: 167261 [2024-12-02 06:33:05,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 06:33:05,770 INFO L435 NwaCegarLoop]: 754 mSDtfsCounter, 1515 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 4253 mSolverCounterSat, 2101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 6354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2101 IncrementalHoareTripleChecker+Valid, 4253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:05,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 806 Invalid, 6354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2101 Valid, 4253 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2024-12-02 06:33:05,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167261 states. [2024-12-02 06:33:07,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167261 to 150790. [2024-12-02 06:33:07,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150790 states, 150789 states have (on average 1.0828243439508187) internal successors, (163278), 150789 states have internal predecessors, (163278), 0 states have call successors, (0), 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 06:33:07,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150790 states to 150790 states and 163278 transitions. [2024-12-02 06:33:07,456 INFO L78 Accepts]: Start accepts. Automaton has 150790 states and 163278 transitions. Word has length 1121 [2024-12-02 06:33:07,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:07,457 INFO L471 AbstractCegarLoop]: Abstraction has 150790 states and 163278 transitions. [2024-12-02 06:33:07,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 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 06:33:07,458 INFO L276 IsEmpty]: Start isEmpty. Operand 150790 states and 163278 transitions. [2024-12-02 06:33:07,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1138 [2024-12-02 06:33:07,470 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:07,471 INFO L218 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:33:07,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 06:33:07,471 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:07,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:07,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1089232394, now seen corresponding path program 1 times [2024-12-02 06:33:07,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:07,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484782604] [2024-12-02 06:33:07,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:07,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1356 backedges. 823 proven. 66 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2024-12-02 06:33:10,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:10,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484782604] [2024-12-02 06:33:10,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484782604] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:33:10,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880319831] [2024-12-02 06:33:10,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:10,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:33:10,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:33:10,146 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:33:10,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 06:33:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:10,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 06:33:10,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:33:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1356 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 1267 trivial. 0 not checked. [2024-12-02 06:33:10,598 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:33:10,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880319831] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:10,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:33:10,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-12-02 06:33:10,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128737485] [2024-12-02 06:33:10,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:10,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:33:10,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:10,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:33:10,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:33:10,601 INFO L87 Difference]: Start difference. First operand 150790 states and 163278 transitions. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 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 06:33:18,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:18,736 INFO L93 Difference]: Finished difference Result 339913 states and 369332 transitions. [2024-12-02 06:33:18,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:33:18,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 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 1137 [2024-12-02 06:33:18,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:18,925 INFO L225 Difference]: With dead ends: 339913 [2024-12-02 06:33:18,925 INFO L226 Difference]: Without dead ends: 191855 [2024-12-02 06:33:18,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1140 GetRequests, 1137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:33:18,977 INFO L435 NwaCegarLoop]: 2479 mSDtfsCounter, 1596 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 5062 mSolverCounterSat, 863 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 5925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 863 IncrementalHoareTripleChecker+Valid, 5062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:18,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1596 Valid, 2595 Invalid, 5925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [863 Valid, 5062 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-12-02 06:33:19,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191855 states. [2024-12-02 06:33:20,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191855 to 182183. [2024-12-02 06:33:20,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182183 states, 182182 states have (on average 1.0846516121241396) internal successors, (197604), 182182 states have internal predecessors, (197604), 0 states have call successors, (0), 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 06:33:21,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182183 states to 182183 states and 197604 transitions. [2024-12-02 06:33:21,013 INFO L78 Accepts]: Start accepts. Automaton has 182183 states and 197604 transitions. Word has length 1137 [2024-12-02 06:33:21,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:21,013 INFO L471 AbstractCegarLoop]: Abstraction has 182183 states and 197604 transitions. [2024-12-02 06:33:21,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 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 06:33:21,014 INFO L276 IsEmpty]: Start isEmpty. Operand 182183 states and 197604 transitions. [2024-12-02 06:33:21,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1195 [2024-12-02 06:33:21,028 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:21,028 INFO L218 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:33:21,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 06:33:21,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 06:33:21,229 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:21,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:21,230 INFO L85 PathProgramCache]: Analyzing trace with hash 734736043, now seen corresponding path program 1 times [2024-12-02 06:33:21,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:21,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716471816] [2024-12-02 06:33:21,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:21,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:22,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1219 backedges. 766 proven. 0 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2024-12-02 06:33:22,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:22,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716471816] [2024-12-02 06:33:22,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716471816] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:22,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:33:22,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:33:22,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824144605] [2024-12-02 06:33:22,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:22,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:33:22,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:22,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:33:22,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:33:22,994 INFO L87 Difference]: Start difference. First operand 182183 states and 197604 transitions. Second operand has 4 states, 4 states have (on average 204.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 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 06:33:33,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:33,702 INFO L93 Difference]: Finished difference Result 447884 states and 485694 transitions. [2024-12-02 06:33:33,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:33:33,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 204.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 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 1194 [2024-12-02 06:33:33,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:34,197 INFO L225 Difference]: With dead ends: 447884 [2024-12-02 06:33:34,197 INFO L226 Difference]: Without dead ends: 268371 [2024-12-02 06:33:34,244 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 06:33:34,245 INFO L435 NwaCegarLoop]: 684 mSDtfsCounter, 2110 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 7306 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 7935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 7306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:34,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2110 Valid, 1034 Invalid, 7935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 7306 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2024-12-02 06:33:34,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268371 states. [2024-12-02 06:33:36,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268371 to 268369. [2024-12-02 06:33:36,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268369 states, 268368 states have (on average 1.0724229416323854) internal successors, (287804), 268368 states have internal predecessors, (287804), 0 states have call successors, (0), 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 06:33:37,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268369 states to 268369 states and 287804 transitions. [2024-12-02 06:33:37,654 INFO L78 Accepts]: Start accepts. Automaton has 268369 states and 287804 transitions. Word has length 1194 [2024-12-02 06:33:37,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:37,654 INFO L471 AbstractCegarLoop]: Abstraction has 268369 states and 287804 transitions. [2024-12-02 06:33:37,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 204.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 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 06:33:37,657 INFO L276 IsEmpty]: Start isEmpty. Operand 268369 states and 287804 transitions. [2024-12-02 06:33:37,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1249 [2024-12-02 06:33:37,679 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:37,680 INFO L218 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:33:37,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 06:33:37,681 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:37,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:37,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1357148899, now seen corresponding path program 1 times [2024-12-02 06:33:37,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:37,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778782452] [2024-12-02 06:33:37,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:37,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:40,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1582 backedges. 1049 proven. 66 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2024-12-02 06:33:40,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:40,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778782452] [2024-12-02 06:33:40,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778782452] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:33:40,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397915505] [2024-12-02 06:33:40,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:40,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:33:40,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:33:40,488 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:33:40,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 06:33:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:40,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 1436 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 06:33:40,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:33:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1582 backedges. 760 proven. 0 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2024-12-02 06:33:41,453 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:33:41,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397915505] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:41,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:33:41,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-12-02 06:33:41,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965103526] [2024-12-02 06:33:41,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:41,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:33:41,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:41,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:33:41,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:33:41,456 INFO L87 Difference]: Start difference. First operand 268369 states and 287804 transitions. Second operand has 3 states, 3 states have (on average 264.0) internal successors, (792), 2 states have internal predecessors, (792), 0 states have call successors, (0), 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 06:33:50,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:50,472 INFO L93 Difference]: Finished difference Result 546427 states and 585636 transitions. [2024-12-02 06:33:50,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:33:50,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 264.0) internal successors, (792), 2 states have internal predecessors, (792), 0 states have call successors, (0), 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 1248 [2024-12-02 06:33:50,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:50,754 INFO L225 Difference]: With dead ends: 546427 [2024-12-02 06:33:50,754 INFO L226 Difference]: Without dead ends: 280790 [2024-12-02 06:33:50,805 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1251 GetRequests, 1248 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:33:50,805 INFO L435 NwaCegarLoop]: 1270 mSDtfsCounter, 1161 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 4211 mSolverCounterSat, 1475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 5686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1475 IncrementalHoareTripleChecker+Valid, 4211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:50,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 1394 Invalid, 5686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1475 Valid, 4211 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-12-02 06:33:51,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280790 states. [2024-12-02 06:33:54,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280790 to 275188. [2024-12-02 06:33:54,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275188 states, 275187 states have (on average 1.0653155854019267) internal successors, (293161), 275187 states have internal predecessors, (293161), 0 states have call successors, (0), 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 06:33:55,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275188 states to 275188 states and 293161 transitions. [2024-12-02 06:33:55,015 INFO L78 Accepts]: Start accepts. Automaton has 275188 states and 293161 transitions. Word has length 1248 [2024-12-02 06:33:55,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:55,015 INFO L471 AbstractCegarLoop]: Abstraction has 275188 states and 293161 transitions. [2024-12-02 06:33:55,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.0) internal successors, (792), 2 states have internal predecessors, (792), 0 states have call successors, (0), 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 06:33:55,016 INFO L276 IsEmpty]: Start isEmpty. Operand 275188 states and 293161 transitions. [2024-12-02 06:33:55,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1563 [2024-12-02 06:33:55,049 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:55,050 INFO L218 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:33:55,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-12-02 06:33:55,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:33:55,251 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:55,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:55,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2070898064, now seen corresponding path program 1 times [2024-12-02 06:33:55,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:55,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923676020] [2024-12-02 06:33:55,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:55,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:58,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 916 proven. 485 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 06:33:58,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:58,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923676020] [2024-12-02 06:33:58,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923676020] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:33:58,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231221449] [2024-12-02 06:33:58,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:58,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:33:58,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:33:58,877 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:33:58,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 06:33:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:59,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 06:33:59,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:34:01,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 1401 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 06:34:01,866 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:34:01,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231221449] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:34:01,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:34:01,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-12-02 06:34:01,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367796428] [2024-12-02 06:34:01,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:34:01,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:34:01,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:34:01,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:34:01,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:34:01,870 INFO L87 Difference]: Start difference. First operand 275188 states and 293161 transitions. Second operand has 4 states, 4 states have (on average 386.0) internal successors, (1544), 3 states have internal predecessors, (1544), 0 states have call successors, (0), 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 06:34:12,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:34:12,794 INFO L93 Difference]: Finished difference Result 604994 states and 644643 transitions. [2024-12-02 06:34:12,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:34:12,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 386.0) internal successors, (1544), 3 states have internal predecessors, (1544), 0 states have call successors, (0), 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 1562 [2024-12-02 06:34:12,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:34:13,119 INFO L225 Difference]: With dead ends: 604994 [2024-12-02 06:34:13,120 INFO L226 Difference]: Without dead ends: 329800 [2024-12-02 06:34:13,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1567 GetRequests, 1560 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:34:13,356 INFO L435 NwaCegarLoop]: 678 mSDtfsCounter, 2056 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 7251 mSolverCounterSat, 1725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2056 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 8976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1725 IncrementalHoareTripleChecker+Valid, 7251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:34:13,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2056 Valid, 884 Invalid, 8976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1725 Valid, 7251 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-12-02 06:34:13,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329800 states. [2024-12-02 06:34:16,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329800 to 329792. [2024-12-02 06:34:16,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329792 states, 329791 states have (on average 1.0440945932423868) internal successors, (344333), 329791 states have internal predecessors, (344333), 0 states have call successors, (0), 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 06:34:17,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329792 states to 329792 states and 344333 transitions. [2024-12-02 06:34:17,182 INFO L78 Accepts]: Start accepts. Automaton has 329792 states and 344333 transitions. Word has length 1562 [2024-12-02 06:34:17,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:34:17,182 INFO L471 AbstractCegarLoop]: Abstraction has 329792 states and 344333 transitions. [2024-12-02 06:34:17,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 386.0) internal successors, (1544), 3 states have internal predecessors, (1544), 0 states have call successors, (0), 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 06:34:17,183 INFO L276 IsEmpty]: Start isEmpty. Operand 329792 states and 344333 transitions. [2024-12-02 06:34:17,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1740 [2024-12-02 06:34:17,392 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:34:17,392 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:34:17,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 06:34:17,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:34:17,593 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:34:17,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:34:17,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1187561748, now seen corresponding path program 1 times [2024-12-02 06:34:17,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:34:17,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876987592] [2024-12-02 06:34:17,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:34:17,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:34:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:34:21,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2623 backedges. 1397 proven. 88 refuted. 0 times theorem prover too weak. 1138 trivial. 0 not checked. [2024-12-02 06:34:21,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:34:21,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876987592] [2024-12-02 06:34:21,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876987592] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:34:21,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63194903] [2024-12-02 06:34:21,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:34:21,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:34:21,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:34:21,169 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:34:21,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 06:34:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:34:21,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 1955 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 06:34:21,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:34:21,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2623 backedges. 1419 proven. 0 refuted. 0 times theorem prover too weak. 1204 trivial. 0 not checked. [2024-12-02 06:34:21,964 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:34:21,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63194903] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:34:21,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:34:21,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-12-02 06:34:21,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644163391] [2024-12-02 06:34:21,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:34:21,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:34:21,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:34:21,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:34:21,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:34:21,965 INFO L87 Difference]: Start difference. First operand 329792 states and 344333 transitions. Second operand has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 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 06:34:28,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:34:28,864 INFO L93 Difference]: Finished difference Result 740153 states and 772358 transitions. [2024-12-02 06:34:28,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:34:28,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 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 1739 [2024-12-02 06:34:28,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:34:29,309 INFO L225 Difference]: With dead ends: 740153 [2024-12-02 06:34:29,309 INFO L226 Difference]: Without dead ends: 413093 [2024-12-02 06:34:29,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1742 GetRequests, 1739 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:34:29,372 INFO L435 NwaCegarLoop]: 1183 mSDtfsCounter, 1308 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 4067 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 4451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 4067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:34:29,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 1344 Invalid, 4451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 4067 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-12-02 06:34:29,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413093 states. [2024-12-02 06:34:33,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413093 to 399414. [2024-12-02 06:34:33,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399414 states, 399413 states have (on average 1.0391174047915315) internal successors, (415037), 399413 states have internal predecessors, (415037), 0 states have call successors, (0), 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 06:34:34,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399414 states to 399414 states and 415037 transitions. [2024-12-02 06:34:34,015 INFO L78 Accepts]: Start accepts. Automaton has 399414 states and 415037 transitions. Word has length 1739 [2024-12-02 06:34:34,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:34:34,016 INFO L471 AbstractCegarLoop]: Abstraction has 399414 states and 415037 transitions. [2024-12-02 06:34:34,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 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 06:34:34,016 INFO L276 IsEmpty]: Start isEmpty. Operand 399414 states and 415037 transitions. [2024-12-02 06:34:34,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1740 [2024-12-02 06:34:34,293 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:34:34,294 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:34:34,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 06:34:34,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:34:34,495 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:34:34,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:34:34,495 INFO L85 PathProgramCache]: Analyzing trace with hash -680874314, now seen corresponding path program 1 times [2024-12-02 06:34:34,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:34:34,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676756641] [2024-12-02 06:34:34,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:34:34,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:34:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:34:38,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2571 backedges. 1330 proven. 485 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2024-12-02 06:34:38,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:34:38,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676756641] [2024-12-02 06:34:38,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676756641] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:34:38,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30513218] [2024-12-02 06:34:38,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:34:38,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:34:38,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:34:38,381 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:34:38,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 06:34:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:34:38,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 1950 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 06:34:38,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:34:39,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2571 backedges. 976 proven. 0 refuted. 0 times theorem prover too weak. 1595 trivial. 0 not checked. [2024-12-02 06:34:39,103 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:34:39,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30513218] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:34:39,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:34:39,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-12-02 06:34:39,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190894134] [2024-12-02 06:34:39,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:34:39,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:34:39,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:34:39,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:34:39,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:34:39,105 INFO L87 Difference]: Start difference. First operand 399414 states and 415037 transitions. Second operand has 3 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 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 06:34:46,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:34:46,452 INFO L93 Difference]: Finished difference Result 968077 states and 1007732 transitions. [2024-12-02 06:34:46,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:34:46,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 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 1739 [2024-12-02 06:34:46,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:34:47,448 INFO L225 Difference]: With dead ends: 968077 [2024-12-02 06:34:47,448 INFO L226 Difference]: Without dead ends: 570030 [2024-12-02 06:34:47,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1744 GetRequests, 1738 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:34:47,549 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 1532 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 3837 mSolverCounterSat, 881 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 4718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 881 IncrementalHoareTripleChecker+Valid, 3837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:34:47,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1532 Valid, 1019 Invalid, 4718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [881 Valid, 3837 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-12-02 06:34:47,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570030 states. [2024-12-02 06:34:53,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570030 to 557742. [2024-12-02 06:34:53,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557742 states, 557741 states have (on average 1.0308996469687544) internal successors, (574975), 557741 states have internal predecessors, (574975), 0 states have call successors, (0), 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 06:34:54,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557742 states to 557742 states and 574975 transitions. [2024-12-02 06:34:54,968 INFO L78 Accepts]: Start accepts. Automaton has 557742 states and 574975 transitions. Word has length 1739 [2024-12-02 06:34:54,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:34:54,969 INFO L471 AbstractCegarLoop]: Abstraction has 557742 states and 574975 transitions. [2024-12-02 06:34:54,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 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 06:34:54,969 INFO L276 IsEmpty]: Start isEmpty. Operand 557742 states and 574975 transitions. [2024-12-02 06:34:55,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1787 [2024-12-02 06:34:55,001 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:34:55,001 INFO L218 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:34:55,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 06:34:55,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-12-02 06:34:55,202 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:34:55,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:34:55,203 INFO L85 PathProgramCache]: Analyzing trace with hash 50717616, now seen corresponding path program 1 times [2024-12-02 06:34:55,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:34:55,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674595377] [2024-12-02 06:34:55,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:34:55,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:34:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:34:56,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2847 backedges. 1741 proven. 0 refuted. 0 times theorem prover too weak. 1106 trivial. 0 not checked. [2024-12-02 06:34:56,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:34:56,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674595377] [2024-12-02 06:34:56,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674595377] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:34:56,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:34:56,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:34:56,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426503985] [2024-12-02 06:34:56,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:34:56,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:34:56,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:34:56,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:34:56,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:34:56,693 INFO L87 Difference]: Start difference. First operand 557742 states and 574975 transitions. Second operand has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 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 06:35:04,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:04,958 INFO L93 Difference]: Finished difference Result 1239785 states and 1280162 transitions. [2024-12-02 06:35:04,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:35:04,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 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 1786 [2024-12-02 06:35:04,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:05,912 INFO L225 Difference]: With dead ends: 1239785 [2024-12-02 06:35:05,912 INFO L226 Difference]: Without dead ends: 683410 [2024-12-02 06:35:06,101 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 06:35:06,102 INFO L435 NwaCegarLoop]: 761 mSDtfsCounter, 1632 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 3905 mSolverCounterSat, 840 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1632 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 4745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 840 IncrementalHoareTripleChecker+Valid, 3905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:06,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1632 Valid, 865 Invalid, 4745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [840 Valid, 3905 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-12-02 06:35:06,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683410 states. [2024-12-02 06:35:13,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683410 to 683402. [2024-12-02 06:35:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683402 states, 683401 states have (on average 1.029300513168696) internal successors, (703425), 683401 states have internal predecessors, (703425), 0 states have call successors, (0), 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 06:35:14,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683402 states to 683402 states and 703425 transitions. [2024-12-02 06:35:14,783 INFO L78 Accepts]: Start accepts. Automaton has 683402 states and 703425 transitions. Word has length 1786 [2024-12-02 06:35:14,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:14,784 INFO L471 AbstractCegarLoop]: Abstraction has 683402 states and 703425 transitions. [2024-12-02 06:35:14,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 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 06:35:14,785 INFO L276 IsEmpty]: Start isEmpty. Operand 683402 states and 703425 transitions. [2024-12-02 06:35:14,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1794 [2024-12-02 06:35:14,831 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:14,832 INFO L218 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:35:14,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 06:35:14,832 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:35:14,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:14,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1396111824, now seen corresponding path program 1 times [2024-12-02 06:35:14,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:14,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652320734] [2024-12-02 06:35:14,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:14,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2806 backedges. 1198 proven. 0 refuted. 0 times theorem prover too weak. 1608 trivial. 0 not checked. [2024-12-02 06:35:16,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:16,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652320734] [2024-12-02 06:35:16,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652320734] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:16,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:16,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:35:16,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002019322] [2024-12-02 06:35:16,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:16,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:35:16,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:16,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:35:16,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:35:16,224 INFO L87 Difference]: Start difference. First operand 683402 states and 703425 transitions. Second operand has 3 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 0 states have call successors, (0), 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 06:35:24,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:24,970 INFO L93 Difference]: Finished difference Result 1492422 states and 1537190 transitions. [2024-12-02 06:35:24,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:35:24,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 0 states have call successors, (0), 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 1793 [2024-12-02 06:35:24,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:26,552 INFO L225 Difference]: With dead ends: 1492422 [2024-12-02 06:35:26,552 INFO L226 Difference]: Without dead ends: 810387 [2024-12-02 06:35:26,705 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 06:35:26,706 INFO L435 NwaCegarLoop]: 2548 mSDtfsCounter, 1106 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 4100 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 4818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 4100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:26,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 2741 Invalid, 4818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 4100 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-12-02 06:35:27,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810387 states. [2024-12-02 06:35:35,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810387 to 799414. [2024-12-02 06:35:35,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799414 states, 799413 states have (on average 1.026037855276309) internal successors, (820228), 799413 states have internal predecessors, (820228), 0 states have call successors, (0), 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 06:35:36,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799414 states to 799414 states and 820228 transitions. [2024-12-02 06:35:36,833 INFO L78 Accepts]: Start accepts. Automaton has 799414 states and 820228 transitions. Word has length 1793 [2024-12-02 06:35:36,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:36,833 INFO L471 AbstractCegarLoop]: Abstraction has 799414 states and 820228 transitions. [2024-12-02 06:35:36,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 0 states have call successors, (0), 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 06:35:36,834 INFO L276 IsEmpty]: Start isEmpty. Operand 799414 states and 820228 transitions. [2024-12-02 06:35:36,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1871 [2024-12-02 06:35:36,859 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:36,859 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2024-12-02 06:35:36,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 06:35:36,860 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:35:36,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:36,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1246855812, now seen corresponding path program 1 times [2024-12-02 06:35:36,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:36,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263396433] [2024-12-02 06:35:36,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:36,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3350 backedges. 1850 proven. 0 refuted. 0 times theorem prover too weak. 1500 trivial. 0 not checked. [2024-12-02 06:35:38,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:38,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263396433] [2024-12-02 06:35:38,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263396433] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:38,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:38,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:35:38,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132367783] [2024-12-02 06:35:38,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:38,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:35:38,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:38,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:35:38,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:35:38,414 INFO L87 Difference]: Start difference. First operand 799414 states and 820228 transitions. Second operand has 3 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 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 06:35:47,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:47,813 INFO L93 Difference]: Finished difference Result 1653564 states and 1696625 transitions. [2024-12-02 06:35:47,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:35:47,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 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 1870 [2024-12-02 06:35:47,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:49,000 INFO L225 Difference]: With dead ends: 1653564 [2024-12-02 06:35:49,000 INFO L226 Difference]: Without dead ends: 855517 [2024-12-02 06:35:49,269 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 06:35:49,269 INFO L435 NwaCegarLoop]: 2572 mSDtfsCounter, 1271 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 4171 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 4669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 4171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:49,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1271 Valid, 2740 Invalid, 4669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 4171 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-12-02 06:35:50,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855517 states. [2024-12-02 06:35:57,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855517 to 844459. [2024-12-02 06:35:58,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844459 states, 844458 states have (on average 1.0233463357561892) internal successors, (864173), 844458 states have internal predecessors, (864173), 0 states have call successors, (0), 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 06:35:59,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844459 states to 844459 states and 864173 transitions. [2024-12-02 06:35:59,673 INFO L78 Accepts]: Start accepts. Automaton has 844459 states and 864173 transitions. Word has length 1870 [2024-12-02 06:35:59,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:59,674 INFO L471 AbstractCegarLoop]: Abstraction has 844459 states and 864173 transitions. [2024-12-02 06:35:59,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 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 06:35:59,674 INFO L276 IsEmpty]: Start isEmpty. Operand 844459 states and 864173 transitions. [2024-12-02 06:35:59,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1939 [2024-12-02 06:35:59,709 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:59,709 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 06:35:59,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 06:35:59,710 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:35:59,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:59,710 INFO L85 PathProgramCache]: Analyzing trace with hash 773750499, now seen corresponding path program 1 times [2024-12-02 06:35:59,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:59,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096947167] [2024-12-02 06:35:59,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:59,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:36:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:36:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3750 backedges. 1992 proven. 0 refuted. 0 times theorem prover too weak. 1758 trivial. 0 not checked. [2024-12-02 06:36:01,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:36:01,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096947167] [2024-12-02 06:36:01,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096947167] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:36:01,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:36:01,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:36:01,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140363277] [2024-12-02 06:36:01,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:36:01,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:36:01,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:36:01,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:36:01,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:36:01,622 INFO L87 Difference]: Start difference. First operand 844459 states and 864173 transitions. Second operand has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 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 06:36:13,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:36:13,414 INFO L93 Difference]: Finished difference Result 1881395 states and 1925831 transitions. [2024-12-02 06:36:13,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:36:13,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 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 1938 [2024-12-02 06:36:13,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:36:15,570 INFO L225 Difference]: With dead ends: 1881395 [2024-12-02 06:36:15,570 INFO L226 Difference]: Without dead ends: 1038303 [2024-12-02 06:36:15,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:36:15,893 INFO L435 NwaCegarLoop]: 725 mSDtfsCounter, 3073 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 5900 mSolverCounterSat, 1213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3073 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 7113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1213 IncrementalHoareTripleChecker+Valid, 5900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:36:15,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3073 Valid, 921 Invalid, 7113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1213 Valid, 5900 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-12-02 06:36:16,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038303 states. [2024-12-02 06:36:25,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038303 to 827986. [2024-12-02 06:36:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827986 states, 827985 states have (on average 1.0212999027760166) internal successors, (845621), 827985 states have internal predecessors, (845621), 0 states have call successors, (0), 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 06:36:27,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827986 states to 827986 states and 845621 transitions. [2024-12-02 06:36:27,052 INFO L78 Accepts]: Start accepts. Automaton has 827986 states and 845621 transitions. Word has length 1938 [2024-12-02 06:36:27,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:36:27,053 INFO L471 AbstractCegarLoop]: Abstraction has 827986 states and 845621 transitions. [2024-12-02 06:36:27,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 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 06:36:27,053 INFO L276 IsEmpty]: Start isEmpty. Operand 827986 states and 845621 transitions. [2024-12-02 06:36:27,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1943 [2024-12-02 06:36:27,082 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:36:27,083 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2024-12-02 06:36:27,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 06:36:27,083 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:36:27,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:36:27,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1269260272, now seen corresponding path program 1 times [2024-12-02 06:36:27,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:36:27,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858586714] [2024-12-02 06:36:27,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:36:27,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:36:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:36:31,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3566 backedges. 2027 proven. 1383 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-12-02 06:36:31,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:36:31,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858586714] [2024-12-02 06:36:31,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858586714] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:36:31,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953710839] [2024-12-02 06:36:31,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:36:31,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:36:31,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:36:31,783 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:36:31,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 06:36:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:36:32,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 2165 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 06:36:32,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:36:32,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3566 backedges. 2322 proven. 0 refuted. 0 times theorem prover too weak. 1244 trivial. 0 not checked. [2024-12-02 06:36:32,651 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:36:32,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953710839] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:36:32,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:36:32,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2024-12-02 06:36:32,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158421127] [2024-12-02 06:36:32,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:36:32,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:36:32,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:36:32,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:36:32,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:36:32,653 INFO L87 Difference]: Start difference. First operand 827986 states and 845621 transitions. Second operand has 3 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 0 states have call successors, (0), 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 06:36:41,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:36:41,923 INFO L93 Difference]: Finished difference Result 1651924 states and 1687009 transitions. [2024-12-02 06:36:41,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:36:41,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 0 states have call successors, (0), 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 1942 [2024-12-02 06:36:41,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:36:42,940 INFO L225 Difference]: With dead ends: 1651924 [2024-12-02 06:36:42,941 INFO L226 Difference]: Without dead ends: 822574 [2024-12-02 06:36:43,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1949 GetRequests, 1943 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:36:43,169 INFO L435 NwaCegarLoop]: 2459 mSDtfsCounter, 1199 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 4089 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 2614 SdHoareTripleChecker+Invalid, 4524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 4089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:36:43,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1199 Valid, 2614 Invalid, 4524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 4089 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-12-02 06:36:43,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822574 states. [2024-12-02 06:36:51,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822574 to 812939. [2024-12-02 06:36:51,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812939 states, 812938 states have (on average 1.0177738031682613) internal successors, (827387), 812938 states have internal predecessors, (827387), 0 states have call successors, (0), 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 06:36:53,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812939 states to 812939 states and 827387 transitions. [2024-12-02 06:36:53,053 INFO L78 Accepts]: Start accepts. Automaton has 812939 states and 827387 transitions. Word has length 1942 [2024-12-02 06:36:53,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:36:53,053 INFO L471 AbstractCegarLoop]: Abstraction has 812939 states and 827387 transitions. [2024-12-02 06:36:53,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 0 states have call successors, (0), 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 06:36:53,054 INFO L276 IsEmpty]: Start isEmpty. Operand 812939 states and 827387 transitions. [2024-12-02 06:36:53,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1973 [2024-12-02 06:36:53,088 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:36:53,089 INFO L218 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:36:53,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 06:36:53,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 06:36:53,290 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:36:53,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:36:53,290 INFO L85 PathProgramCache]: Analyzing trace with hash -420136446, now seen corresponding path program 1 times [2024-12-02 06:36:53,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:36:53,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168607212] [2024-12-02 06:36:53,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:36:53,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:36:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:36:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2646 backedges. 1761 proven. 485 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-12-02 06:36:57,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:36:57,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168607212] [2024-12-02 06:36:57,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168607212] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:36:57,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962169097] [2024-12-02 06:36:57,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:36:57,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:36:57,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:36:57,602 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:36:57,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e566ae-efca-43f0-b6d3-1cdd36c68347/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 06:36:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:36:58,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 2161 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 06:36:58,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:37:00,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2646 backedges. 2246 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-12-02 06:37:00,034 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:37:00,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962169097] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:37:00,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:37:00,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-12-02 06:37:00,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851893537] [2024-12-02 06:37:00,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:37:00,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:37:00,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:37:00,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:37:00,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:37:00,037 INFO L87 Difference]: Start difference. First operand 812939 states and 827387 transitions. Second operand has 4 states, 4 states have (on average 398.25) internal successors, (1593), 3 states have internal predecessors, (1593), 0 states have call successors, (0), 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 06:37:12,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:37:12,912 INFO L93 Difference]: Finished difference Result 1628684 states and 1657618 transitions. [2024-12-02 06:37:12,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:37:12,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 398.25) internal successors, (1593), 3 states have internal predecessors, (1593), 0 states have call successors, (0), 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 1972 [2024-12-02 06:37:12,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted.